Mersen 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 US6J2I accommodates 30A Class J or 22 x 58 mm French Ferrule fuses. The US6J is for 60A Class J 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 multiplepole Assembly Kits. All units have provisions for locking in the open position for safety during fuse changeouts or equipment servicing. US3J and US6J 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. Ferraz Shawmut US6J2I is comparable to Allen Bradley 1492-FB2J60-L, Eaton Cooper Bussmann CH60J2I, Sprecher Schuh FH7-2PJ60-L FH8-2PJ60-L, Littelfuse LPSJ60-2ID.