Allen-Bradley 193-EA1FB Solid State Overload Relay

Allen‑Bradley 193‑EA1FB is a Bulletin 193 solid‑state overload relay (SMP‑1) engineered to protect motors by monitoring current and phase conditions and delivering a precise, electronic trip. It offers an adjustable current setting from 3.7 to 12 A, Class 10 trip performance, and a manual reset, with self‑powered operation that does not require an external power source. The unit includes phase‑loss protection, a visible trip indicator, and a pair of isolated auxiliary contacts (1 N.O. and 1 N.C.) for signaling, all in a compact package designed for easy integration with compatible Allen‑Bradley contactors. As a motor protection accessory, it is intended for use with NEMA Size 00 and 100‑M05 contactors and is compatible with 100‑C25/100‑C23 style devices in typical applications. The 193‑EA1FB operates at up to 600 VAC, providing reliable protection for motors against overloads while minimizing nuisance trips through precise electronic sensing and adjustable trip thresholds. This relay combines rugged solid‑state sensing with straightforward diagnostics, making it suitable for integration into standard motor control circuits where space and power efficiency are important. Applications include protection of driven machinery in industrial automation where accurate overload protection and quick, visible fault indication are required.