Product description:
Pringle QA-3033-ET Pressure Contact Switch; 3000 amp, 480 volt, 3 phase, black back plate, 120 volt shunt trip. Sold used electrically OK. Fuses sold separately.
EMSCO # SW-2016-24527- LOC: 5U1  
EMSCO # SW-2021-26466- LOC:  2T4  
EMSCO # SW-2023-27758- LOC:  2T4