Killark EXH1B8 - Circuit breaker handle. Factory or field installed in a 3/4” NPSM opening. Has provision for Lock-On and Lock-Off with up to three padlocks. Consists of an external handle mechanism with through-the-enclosure shaft, internal toggle mechanism, and universal breaker pan. Copper free aluminum with 316 stainless steel shaft and sprongs. O-ring 70 durometer nitrile. Extruded aluminum bodies, stainless steel pins and stainless steel hardware. Circuit breaker handles for operating Eaton, Sq D, GE, ABB, Siemens circuit breakers. Frame sizes 100 amps through 1200 amps, 1 through 4 poles, two handle lengths. The EXH series is UL / CSA certified for Class I Groups BCD, Class II Groups EFG Class III Type 4 & 4X. Also ATEX & IEC Ex certified when installed in the EXB series enclosures with CEN suffix. Kit comes with universal breaker pan, standoffs, mounting hardware and handle assembly. - For use with B7E, DB, EXB, XJB Series enclosures. Used to activate circuit breakers and motor circuit protectors from front cover.