BAB1020  1 Pole 20 Amp Bolt-on 120 Volt Manufactured By Cutler Hammer. The Westinghouse, Cutler Hammer / Eaton Type BAB (also called BA) Circuit Breaker is the Current Series 120 / 240 Volt Bolt-on style Circuit Breaker. Amperages range from 15 to 100 Amp. These are used in Cutler Hammer / Westinghouse PRL1 and PRL1A  Panelboards