Ultrasafe Fuseholders - US3J Series
The Ultrasafe Fuseholders - US3J Series is part of the Mersen (formerly Ferraz Shawmut) ultrasafe fuse holders line, distributed by Gross Automation.

Ferraz Shawmut ULTRASAFE modular 600 volt Fuse Holders for Class J fuses introduce a new level of safety and ease for installing or replacing Class J fuses. ULTRASAFE holders qualify as "finger safe" to an IP20 grade of protection under IEC standards. The US3J accommodates 30A Class J or 22 x 58 mm French Ferrule (holder not UL Listed with 22x58mm) fuses. ULTRASAFE holders are available in compact 1, 2, or 3 pole units, with or without blown-fuse indicators in each pole. Multi-pole units can also be made up in the field by using the multiple-pole Assembly Kits. All units have provisions for locking in the open position for safety during fuse changeouts or equipment servicing. US3J holders can be snap-mounted to 35 mm DIN rail and they have a unique latch which will stay open to allow re-positioning of the holder in the future. Ultrasafe body material is tough and durable polyamide.
Specifications
| Specification | Value |
|---|---|
| Ratings | AC: 600VAC, 30A Min. voltage to operate indicator light: 90VAC, 115VDC (Less than 0.7mA leakage current at 600V), Withstand rating: 200kA I.R.; All Ultrasafe Fuse Holders meet the requirements of UL512; UL Listed, Guide IZLT, File E52283; CSA Certified, Class 6225, File 32169; IEC 269; RoHS Compliant |
| Features | Finger Safe; Optional Indicator Lights; DIN Rail Mount; Compact Footprint; Quick, Easy Fuse Change; Non-load disconnect |
Features
- Finger Safe
- Optional Indicator Lights
- DIN Rail Mount
- Compact Footprint
- Quick, Easy Fuse Change
- Non-load disconnect
Ratings
- AC: 600VAC, 30A Min. voltage to operate indicator light: 90VAC, 115VDC (Less than 0.7mA leakage current at 600V), Withstand rating: 200kA I.R.
- All Ultrasafe Fuse Holders meet the requirements of UL512
- UL Listed, Guide IZLT, File E52283
- CSA Certified, Class 6225, File 32169
- IEC 269
- RoHS Compliant
Catalog Numbers
| Catalog Number | Column 2 | Column 3 | Column 4 |
|---|---|---|---|
| US3J1 | 1 POLE | US3J3I | 3 POLE w/ INDICATORS |
| US3J2 | 2 POLE | US3JN | 1 POLE - NEUTRAL |
| US3J3 | 3 POLE | US3J2PAK | 2 POLE ASSEMBLING KIT |
| US3J1I | 1 POLE w/ INDICATOR | US3J3PAK | 3 POLE ASSEMBLING KIT |
| US3J2I | 2 POLE w/ INDICATORS | US3J4PAK | 4 POLE ASSEMBLING KIT |