Allen-Bradley 193-BSB-42-B Overload Relay

Allen-Bradley 193-BSB42-B Overload Relay is a hand-reset overload protection device in Allen-Bradley’s Bulletin 193 family, designed to protect motor-start circuits by interrupting control power when current exceeds its rated full-load current. The catalog number is 193-BSB42, and this model provides a 2.8 to 4.2 A full-load current rating, enabling reliable overload protection for motors in industrial settings. This overload relay is intended for use with Allen-Bradley Bulletin 100 contactors, providing integrated overload protection in motor starter assemblies. When an overload occurs, the hand-reset relay trips and requires a manual reset before re-energizing the contactor, ensuring a controlled restart after fault conditions. The 193-BSB42-B variant is part of Allen-Bradley’s legacy 193 family of overload protection devices and is designed to accompany compatible motor control components in industrial electrical panels.