Three-pole thermal overload relay (B77S) EN-910-341-983-00, designed to protect 3‑phase motors in contactor circuits, is rated for up to 600 VAC. It features an adjustable current setting from 20 to 32 A, allowing precise protection tuned to the motor’s full-load current, and employs screw-down termination that accepts 18‑3 AWG conductors. This compact overload relay (approx. 0.66 lb) is intended for panel mounting in industrial control applications and pairs with compatible motor starters to provide reliable thermal protection for 3‑phase equipment.
