The Class B motor was the mainstay of PV&T electric freight operations from their delivery until classes J and K were introduced, and still make up a twelveth of the PV&T’s electric roster.

Most of the class B motors were rebuilt into BCC, BCC2, BCC3, BCC4, BCC5, and N starting in the 1990s, so are basically new motors.

48 of the rebuilt motors – plus (unrebuilt) B1 class leader #213 & class B2 leader #243 – are still in service and can be found almost everywhere under the wires.