1 of the ITE/Siemens BQD360 circuit breakers. This BQD breaker is a 3 Pole, 60 Amps, 277/480 Volt, Bolt-On type branch breaker and will fit inside most of the ITE/Siemens Type P1, P2, & P3 panels (depending on the specific mounting hardware currently in place). As you can see from the pictures, this breaker has 3 legs that can be bolted directly to the mounting hardware on the panel's bussing & 3 terminal lugs for the wire placement (Please see photos for wire gauge sizes). This is a GREAT DEAL!