Browse Disconnect Switches
Mersen (formerly Ferraz Shawmut) disconnect switches distributed by Gross Automation. Select a product below for specifications, datasheets, and ordering information.
Mersen disconnect switches include fusible and non-fusible types for industrial and commercial applications. Product lines include FuserBloc, SirCover, and enclosed disconnect switch families in UL 98 and UL 508 ratings.
50 Products in Disconnect Switches
Low Voltage Disconnect Switches / Air Conditioner Disconnect
The safest way to switch power on and off in industrial control panels is with Ferraz Shawmut disconnect switches. Our extensive line includes UL 98 fusible and non-fusible switches, UL 508 switches, and our high-performance Surge Switch, designed to withstand the high surge current of today's transient voltage SPD applications.
aM NH Dimension Fuses / 500 & 690V
Ferraz Shawmut NH Fuse-links, sizes 000, 00, 0, 1, 2, 3, 4 and 4a are rated 500 or 690 Volts AC with breaking capacities of 80kA or 120kA. All fuse-links include an indicator or striker and can accept a microswitch for remote signaling. They all have silver-plated knife blades and ceramic bodies. Accessories include 1, 2, 3 or 4-pole bases, barriers, shields, terminals, microswitch, etc.
CKA 4-11/16" Square Box
Ferraz Shawmut Box Covers fit all standard size electrical boxes with a variety of plug fuse, switch and receptacle combinations. They provide easy access to local protection and control of 125V motors and other equipment. Long life corrosion-protected steel bases.
COU, CRU, CSU, 2-1/4" Handy Box
Ferraz Shawmut Box Covers fit all standard size electrical boxes with a variety of plug fuse, switch and receptacle combinations. They provide easy access to local protection and control of 125V motors and other equipment. Long life corrosion-protected steel bases.
COW, CRW, CSW, 2-3/4" Switch Box
Ferraz Shawmut Box Covers fit all standard size electrical boxes with a variety of plug fuse, switch and receptacle combinations. They provide easy access to local protection and control of 125V motors and other equipment. Long life corrosion-protected steel bases.
Features
Ferraz Shawmut Box Covers fit all standard size electrical boxes with a variety of plug fuse, switch and receptacle combinations. They provide easy access to local protection and control of 125V motors and other equipment. Long life corrosion-protected steel bases.
CSX, CRX, COX, 4" Octagon Box
Ferraz Shawmut Box Covers fit all standard size electrical boxes with a variety of plug fuse, switch and receptacle combinations. They provide easy access to local protection and control of 125V motors and other equipment. Long life corrosion-protected steel bases.
Low Voltage Disconnect Switches / Enclosed Disconnect Switch
The safest way to switch power on and off in industrial control panels is with Ferraz Shawmut disconnect switches. Our extensive line includes UL 98 fusible and non-fusible switches, UL 508 switches, and our high-performance Surge Switch, designed to withstand the high surge current of today's transient voltage SPD applications.
Engineered Fusible Shunt Trip Disconnect
Ferraz Shawmut’s Engineered Switches offer modular industrial control panels featuring a fusible shunt trip to allow for remote disconnection. An array of available options allows for maximum functionality to be built in a single compact panel. Panels built for elevator applications feature control transformers (fusing both primary and secondary sides), a fire safety interface relay with a fire alarm voltage monitoring relay and mechanically interlocked auxiliary contacts. Use of Ferraz Shawmut’s Amp-Trap 2000® AJT Class J fuses permits easy selectivity coordination, while providing the panel and its components with superior current limitation and the ability to withstand high fault conditions. AJT fuses provide added system reliability since no maintenance or periodic testing is required as with other electromechanical over-current devices.
Fused - Enclosed Disconnect Switch
Ferraz Shawmut Enclosed Disconnect Switches are designed to meet customer’s requirements for compact and durable individual disconnecting means. Both fusible and non-fusible versions are available in a variety of enclosures types. Ferraz Shawmut features NEMA 4X non-metallic enclosures that are extremely durable and provide the ultimate protection for harsh environments and conditions. The enclosed disconnect switch range offers safety, ease of installation, space savings and operational convenience to end-users.
Fuserblock - Universal Gear Box
Ferraz Shawmut FUSERBLOC disconnect switches are extremely durable, manually operated, fusible disconnect switches. All FUSERBLOC switches are supplied with fuse covers and line side shrouding as a standard feature . These switches provide the ultimate in short circuit protection when used with Ferraz Shawmut’s Class CC, J or L fuses . These heavy-duty switches are designed with the most up-to-date disconnect fuse and switch technology available.
Fuserblock - Universal Gear Box
Ferraz Shawmut FUSERBLOC disconnect switches are extremely durable, manually operated, fusible disconnect switches. All FUSERBLOC switches are supplied with fuse covers and line side shrouding as a standard feature. These switches provide the ultimate in short circuit protection when used with Ferraz Shawmut’s Class CC, J or L fuses. These heavy-duty switches are designed with the most up-to-date disconnect fuse and switch technology available.
Low Voltage Disconnect Switches / Fusible Disconnect Switch
The safest way to switch power on and off in industrial control panels is with Ferraz Shawmut disconnect switches. Our extensive line includes UL 98 fusible and non-fusible switches, UL 508 switches, and our high-performance Surge Switch, designed to withstand the high surge current of today's transient voltage SPD applications.
Low Voltage Disconnect Switches / Fusible Shunt Trip
The safest way to switch power on and off in industrial control panels is with Ferraz Shawmut disconnect switches. Our extensive line includes UL 98 fusible and non-fusible switches, UL 508 switches, and our high-performance Surge Switch, designed to withstand the high surge current of today's transient voltage SPD applications.
gG NH Dimension Fuses / 500 & 690V
Ferraz Shawmut NH Fuse-links, sizes 000, 00, 0, 1, 2, 3, 4 and 4a are rated 500 or 690 Volts AC with breaking capacities of 80kA or 120kA. All fuse-links include an indicator or striker and can accept a microswitch for remote signaling. They all have silver-plated knife blades and ceramic bodies. Accessories include 1, 2, 3 or 4-pole bases, barriers, shields, terminals, microswitch, etc.
Low Voltage Disconnect Switches / Manual By-Pass Changeover Switch
The safest way to switch power on and off in industrial control panels is with Ferraz Shawmut disconnect switches. Our extensive line includes UL 98 fusible and non-fusible switches, UL 508 switches, and our high-performance Surge Switch, designed to withstand the high surge current of today's transient voltage SPD applications.
Low Voltage Disconnect Switches / Manual Changeover Switch
The safest way to switch power on and off in industrial control panels is with Ferraz Shawmut disconnect switches. Our extensive line includes UL 98 fusible and non-fusible switches, UL 508 switches, and our high-performance Surge Switch, designed to withstand the high surge current of today's transient voltage SPD applications.
Non-Fused - Enclosed Disconnect Switch
Ferraz Shawmut Enclosed Disconnect Switches are designed to meet customer’s requirements for compact and durable individual disconnecting means. Both fusible and non-fusible versions are available in a variety of enclosures types. Ferraz Shawmut features NEMA 4X non-metallic enclosures that are extremely durable and provide the ultimate protection for harsh environments and conditions. The enclosed disconnect switch range offers safety, ease of installation, space savings and operational convenience to end-users.
Low Voltage Disconnect Switches / Non-Fusible Disconnect Switch
The safest way to switch power on and off in industrial control panels is with Ferraz Shawmut disconnect switches. Our extensive line includes UL 98 fusible and non-fusible switches, UL 508 switches, and our high-performance Surge Switch, designed to withstand the high surge current of today's transient voltage SPD applications.
Pullout (Fused)
Built for maximum performance, durability and ease of use, Ferraz Shawmut’s AC disconnects are the solution today’s single phase commercial and residential applications require. Available in a full range of fusible, non-fusible, switched and pullout styles, these disconnects are easy to install, easy to use, and rugged enough to ensure years of reliable service. The innovative versions with GFCI receptacles are the easiest to install in the industry. Designed to meet the requirements of NEC210.63, 406.8(B)(1), 440-14, Ferraz Shawmut’s AC disconnects feature both UL and cUL approvals. The 30 and 60 ampere units are rated for 3 and 10 horsepower at 240 VAC respectively.
Pullout (Non-Fused)
Built for maximum performance, durability and ease of use, Ferraz Shawmut’s AC disconnects are the solution today’s single phase commercial and residential applications require. Available in a full range of fusible, non-fusible, switched and pullout styles, these disconnects are easy to install, easy to use, and rugged enough to ensure years of reliable service. The innovative versions with GFCI receptacles are the easiest to install in the industry. Designed to meet the requirements of NEC210.63, 406.8(B)(1), 440-14, Ferraz Shawmut’s AC disconnects feature both UL and cUL approvals. The 30 and 60 ampere units are rated for 3 and 10 horsepower at 240 VAC respectively.
Shawmut Trigger
The Shawmut Trigger Indicator is a field-mountable blown-fuse indicator which is wired parallel with the fuse to be monitored. The striker pin exerts a static force of one pound and be used to actuate a switch. It is available in 130 volt (TI-130), 600 volt (TI-600), and 1500 (TI-1500) ratings. The TI-600 Trigger is a UL Listed accessory. The Shawmut Trigger is not fuse and should only be used in parallel with fuses rated 70A or higher. To mount the Trigger, use two midget fuse clips (for 13/32" diameter fuses) found in the Fuse Clip section.
Sircover By-Pass Series
SIRCOVER BY-PASS are manually operated multipolar changeover switches. They are a combination of three interlocked switches for use with 3+6 poles or 4+8 poles. They insulate by providing simultaneous safety isolation upstream and downstream and by passing loads or low voltage circuits mainly during maintenance operations.
Sircover Series
SIRCOVER are manually operated multipolar changeover switches. They changeover between two low voltage power circuits under load and provide safety disconnection.
Low Voltage Disconnect Switches / Surge Switch
The safest way to switch power on and off in industrial control panels is with Ferraz Shawmut disconnect switches. Our extensive line includes UL 98 fusible and non-fusible switches, UL 508 switches, and our high-performance Surge Switch, designed to withstand the high surge current of today's transient voltage SPD applications.
Surge-Trap® SPD Type 1 STT4X Series
The Surge-Trap® Type 1 STT4X Series meets requirements for UL1449 Third Edition. It provides a two-year warranty and offers an economical replacement for the former surge arrestor category. The STT4X features TPMOV® technology inside making it a no-fuse surge suppressor that doesn't require the use of additional overcurrent protection. It can be installed upstream or downstream of the main disconnect.
Switched (Non-Fused)
Built for maximum performance, durability and ease of use, Ferraz Shawmut’s AC disconnects are the solution today’s single phase commercial and residential applications require. Available in a full range of fusible, non-fusible, switched and pullout styles, these disconnects are easy to install, easy to use, and rugged enough to ensure years of reliable service. The innovative versions with GFCI receptacles are the easiest to install in the industry. Designed to meet the requirements of NEC210.63, 406.8(B)(1), 440-14, Ferraz Shawmut’s AC disconnects feature both UL and cUL approvals. The 30 and 60 ampere units are rated for 3 and 10 horsepower at 240 VAC respectively.
Trigger Actuator
The Trigger Actuator (catalog number suffix TA) has two functions and is an option available on many Amp-trap fuses. First, it provides visual indication of an open fuse and second, it provides a mount for an Add-On-Switch (AOS-) which can indicate a blown fuse via a signal light or initiate appropriate control action. The Trigger Actuator has no measurable I2t or arc voltage effect on fuses rated 65A or higher. It will add 2 to 5 amperes of long term rating and requires a minimum circuit voltage of 5 to 10 volts to activate.
Surge Related Devices / Surge Switches
Ferraz Shawmut's complete family of surge suppression devices includes our VSP MOV fuse, our TPMOV thermally protected MOV fuse, and Surge Trap, our new modular, DIN-rail mounted transient-voltage surge suppressor.
UL 508, TVSS Surge Switch
The Ferraz Shawmut Surge Switch is an extremely compact, high performance, annually operated, non-fused switch. It is specifically designed to withstand the high surge current of 200kA with an 8x20 µs waveform seen in today’s transient voltage surge protection device (SPD) applications. Ferraz Shawmut’s Surge Switch utilizes a unique contact design that actually clamps contacts tighter during a surge.
UL 508, TVSS Surge Switch
The Ferraz Shawmut Surge Switch is an extremely compact, high performance, annually operated, non-fused switch. It is specifically designed to withstand the high surge current of 200kA with an 8x20 µs waveform seen in today’s transient voltage surge protection device (SPD) applications. Ferraz Shawmut’s Surge Switch utilizes a unique contact design that actually clamps contacts tighter during a surge.
UL 98, Fused (Fuserbloc Series - Front Operated)
Ferraz Shawmut FUSERBLOC disconnect switches are extremely durable, manually operated, fusible disconnect switches. These switches employ double break contacts per pole that ensure complete isolation of the fuse when the switcdh is in the OFF position. With safety in mind, all FUSERBLOC switches are supplied with fuse covers and line side shrouding as a standard feature. These switches provide the ultimate in short circuit protection when used with Ferraz Shawmut's Class CC, J or L fuses. These heavy duty switches are designed with the most up-to-date fuse and disconnect switch technology available. Designed to meet the UL98 standard, the FUSERBLOC gives you the product that "makes and breaks" power circuits on load. FUSERBLOC switches are tested and approved for use in the most demanding applications, such as "Service Entrance". The optional TEST function (up to 400A) enables testing of the control circuit auxiliaries without switching the main contacts. This function provides a simple alternative to a separately wired push button. A wide array of handles are available to meet OSHA padlocking requirements, NEMA configurations and defeater options.
UL 98, Fused (Fuserbloc Series - Front Operated)
Ferraz Shawmut FUSERBLOC disconnect switches are extremely durable, manually operated, fusible disconnect switches. These switches employ double break contacts per pole that ensure complete isolation of the fuse when the switcdh is in the OFF position. With safety in mind, all FUSERBLOC switches are supplied with fuse covers and line side shrouding as a standard feature. These switches provide the ultimate in short circuit protection when used with Ferraz Shawmut's Class CC, J or L fuses. These heavy duty switches are designed with the most up-to-date fuse and disconnect switch technology available. Designed to meet the UL98 standard, the FUSERBLOC gives you the product that "makes and breaks" power circuits on load. FUSERBLOC switches are tested and approved for use in the most demanding applications, such as "Service Entrance". The optional TEST function (up to 400A) enables testing of the control circuit auxiliaries without switching the main contacts. This function provides a simple alternative to a separately wired push button. A wide array of handles are available to meet OSHA padlocking requirements, NEMA configurations and defeater options.
UL 98, Fused (Fuserbloc Series - Side Operated)
Ferraz Shawmut FUSERBLOC disconnect switches are extremely durable, manually operated, fusible disconnect switches. These switches employ double break contacts per pole that ensure complete isolation of the fuse when the switcdh is in the OFF position. With safety in mind, all FUSERBLOC switches are supplied with fuse covers and line side shrouding as a standard feature. These switches provide the ultimate in short circuit protection when used with Ferraz Shawmut's Class CC, J or L fuses. These heavy duty switches are designed with the most up-to-date fuse and disconnect switch technology available. Designed to meet the UL98 standard, the FUSERBLOC gives you the product that "makes and breaks" power circuits on load. FUSERBLOC switches are tested and approved for use in the most demanding applications, such as "Service Entrance". The optional TEST function (up to 400A) enables testing of the control circuit auxiliaries without switching the main contacts. This function provides a simple alternative to a separately wired push button. A wide array of handles are available to meet OSHA padlocking requirements, NEMA configurations and defeater options.
UL 98, Fused (Fuserbloc Series - Side Operated)
Ferraz Shawmut FUSERBLOC disconnect switches are extremely durable, manually operated, fusible disconnect switches. These switches employ double break contacts per pole that ensure complete isolation of the fuse when the switcdh is in the OFF position. With safety in mind, all FUSERBLOC switches are supplied with fuse covers and line side shrouding as a standard feature. These switches provide the ultimate in short circuit protection when used with Ferraz Shawmut's Class CC, J or L fuses. These heavy duty switches are designed with the most up-to-date fuse and disconnect switch technology available. Designed to meet the UL98 standard, the FUSERBLOC gives you the product that "makes and breaks" power circuits on load. FUSERBLOC switches are tested and approved for use in the most demanding applications, such as "Service Entrance". The optional TEST function (up to 400A) enables testing of the control circuit auxiliaries without switching the main contacts. This function provides a simple alternative to a separately wired push button. A wide array of handles are available to meet OSHA padlocking requirements, NEMA configurations and defeater options.
UL 508, Non-Fused (FSLBS Series - Front/Side Operated)
The FSLBS Load Break Switch is a newly designed industrial-grade switch capable of making or breaking loads up to 600V. It is suitable as a motor disconnect. Extremely compact and robust, these switches have a variety of mounting options including DIN-rail, base, or door-mounting. A wide assortment of handles, shafts and accessories are available to accommodate any installation requirement. Both the toggle and rotary styles have a built-in pad-lockable hasp and the integrated box terminals are finger-safe to IP-20. Utilizing a patented, innovative design, the FSLBS can be actuated from the front or either side.
UL 508, Non-Fused (FSLBS Series - Front/Side Operated)
The FSLBS Load Break Switch is a newly designed industrial-grade switch capable of making or breaking loads up to 600V. It is suitable as a motor disconnect. Extremely compact and robust, these switches have a variety of mounting options including DIN-rail, base, or door-mounting. A wide assortment of handles, shafts and accessories are available to accommodate any installation requirement. Both the toggle and rotary styles have a built-in pad-lockable hasp and the integrated box terminals are finger-safe to IP-20. Utilizing a patented, innovative design, the FSLBS can be actuated from the front or either side.
UL 98, Non-Fused (Sirco Series - Front Operated)
Ferraz Shawmut SIRCO disconnect switches are extremely durable, manually operated, non-fused disconnect switches. These heavy duty switches are designed with the most up-to-date disconnect switch technology available. Designed to suit the UL98 standard, the SIRCO gives you a product that "makes and breaks" power circuits on load. The SIRCO switches are tested and approved for use in the most demanding applications, such as "Service Entrance". Up to 400A, the switches come with visible blade contacts. A wide array of handles are available to meet OSHA padlocking requirements, NEMA configurations and defeater options.
UL 98, Non-Fused (Sirco Series - Front Operated)
Ferraz Shawmut SIRCO disconnect switches are extremely durable, manually operated, non-fused disconnect switches. These heavy duty switches are designed with the most up-to-date disconnect switch technology available. Designed to suit the UL98 standard, the SIRCO gives you a product that "makes and breaks" power circuits on load. The SIRCO switches are tested and approved for use in the most demanding applications, such as "Service Entrance". Up to 400A, the switches come with visible blade contacts. A wide array of handles are available to meet OSHA padlocking requirements, NEMA configurations and defeater options.
UL 98, Non-Fused (Sirco Series - Side Operated)
Ferraz Shawmut SIRCO disconnect switches are extremely durable, manually operated, non-fused disconnect switches. These heavy duty switches are designed with the most up-to-date disconnect switch technology available. Designed to suit the UL98 standard, the SIRCO gives you a product that "makes and breaks" power circuits on load. The SIRCO switches are tested and approved for use in the most demanding applications, such as "Service Entrance". Up to 400A, the switches come with visible blade contacts. A wide array of handles are available to meet OSHA padlocking requirements, NEMA configurations and defeater options.
UL 98, Non-Fused (Sirco Series - Side Operated)
Ferraz Shawmut SIRCO disconnect switches are extremely durable, manually operated, non-fused disconnect switches. These heavy duty switches are designed with the most up-to-date disconnect switch technology available. Designed to suit the UL98 standard, the SIRCO gives you a product that "makes and breaks" power circuits on load. The SIRCO switches are tested and approved for use in the most demanding applications, such as "Service Entrance". Up to 400A, the switches come with visible blade contacts. A wide array of handles are available to meet OSHA padlocking requirements, NEMA configurations and defeater options.
UL508, Non-Fused (Como C Series)
COMO C are manually operated multipolar changeover switches. They changeover between two low voltage power circuits under load and provide safety disconnection.
UL508, Non-Fused (LBSM Series - Front Operated)
Ferraz Shawmut LBS load break disconnect switches have been designed for today's industrial control systems. The LBS switches allow you to safely turn power to your panel on and off or to isolate a particular circuit within the panel. These switches are extremely compact and offer a variety of mounting options like DIN rail mounting, base mounting, or door mounting. A wide assortment of handles, shafts and accessories are available to provide you with the ultimate flexibility in the design of your industrial control panels. Wiring terminations are integral to the switch body and recessed to insure a "finger safe" environment according to IEC standards to an IP20 grade of protection.
UL508, Non-Fused (LBSM Series - Front Operated)
Ferraz Shawmut LBS load break disconnect switches have been designed for today's industrial control systems. The LBS switches allow you to safely turn power to your panel on and off or to isolate a particular circuit within the panel. These switches are extremely compact and offer a variety of mounting options like DIN rail mounting, base mounting, or door mounting. A wide assortment of handles, shafts and accessories are available to provide you with the ultimate flexibility in the design of your industrial control panels. Wiring terminations are integral to the switch body and recessed to insure a "finger safe" environment according to IEC standards to an IP20 grade of protection.
UL508, Non-Fused (LBSR Series - Front Operated)
Ferraz Shawmut LBS load break disconnect switches have been designed for today's industrial control systems. The LBS switches allow you to safely turn power to your panel on and off or to isolate a particular circuit within the panel. These switches are extremely compact and offer a variety of mounting options like DIN rail mounting, base mounting, or door mounting. A wide assortment of handles, shafts and accessories are available to provide you with the ultimate flexibility in the design of your industrial control panels. Wiring terminations are integral to the switch body and recessed to insure a "finger safe" environment according to IEC standards to an IP20 grade of protection.
UL508, Non-Fused (LBSR Series - Front Operated)
Ferraz Shawmut LBS load break disconnect switches have been designed for today's industrial control systems. The LBS switches allow you to safely turn power to your panel on and off or to isolate a particular circuit within the panel. These switches are extremely compact and offer a variety of mounting options like DIN rail mounting, base mounting, or door mounting. A wide assortment of handles, shafts and accessories are available to provide you with the ultimate flexibility in the design of your industrial control panels. Wiring terminations are integral to the switch body and recessed to insure a "finger safe" environment according to IEC standards to an IP20 grade of protection.
UL508, Non-Fused (LBST Series - Toggle Operated)
Ferraz Shawmut LBS load break disconnect switches have been designed for today's industrial control systems. The LBS switches allow you to safely turn power to your panel on and off or to isolate a particular circuit within the panel. These switches are extremely compact and offer a variety of mounting options like DIN rail mounting, base mounting, or door mounting. A wide assortment of handles, shafts and accessories are available to provide you with the ultimate flexibility in the design of your industrial control panels. Wiring terminations are integral to the switch body and recessed to insure a "finger safe" environment according to IEC standards to an IP20 grade of protection.
UL508, Non-Fused (LBST Series - Toggle Operated)
Ferraz Shawmut LBS load break disconnect switches have been designed for today's industrial control systems. The LBS switches allow you to safely turn power to your panel on and off or to isolate a particular circuit within the panel. These switches are extremely compact and offer a variety of mounting options like DIN rail mounting, base mounting, or door mounting. A wide assortment of handles, shafts and accessories are available to provide you with the ultimate flexibility in the design of your industrial control panels. Wiring terminations are integral to the switch body and recessed to insure a "finger safe" environment according to IEC standards to an IP20 grade of protection.
UL 508, TVSS Surge Switch
The Ferraz Shawmut Surge Switch is an extremely compact, high performance, manually operated, non-fused switch. It is specifically designed to withstand the high surge current of 200kA with an 8x20 µs waveform seen in today’s transient voltage surge protection device (SPD) applications. Ferraz Shawmut’s Surge Switch utilizes a unique contact design that actually clamp contacts tighter during a surge.
UL 508, TVSS Surge Switch
The Ferraz Shawmut Surge Switch is an extremely compact, high performance, manually operated, non-fused switch. It is specifically designed to withstand the high surge current of 200kA with an 8x20 µs waveform seen in today’s transient voltage surge protection device (SPD) applications. Ferraz Shawmut’s Surge Switch utilizes a unique contact design that actually clamp contacts tighter during a surge.