Littelfuse, Inc. Monitor - Relay Output ECSH40AD

The ECSH40AD is a single-phase AC current sensor with a built-in toroidal sensor for overcurrent detection, designed for 120VAC operation. It features an adjustable trip point range of 0.5-5A, a fixed trip delay of 0.150-7s, and a sensing delay on startup of 0s. The unit includes an isolated SPDT relay rated at 10A resistive at 240VAC, with mechanical and electrical lifespans of 1×10⁶ and 1×10⁵ operations respectively. It mounts via two #6 (M3.5×0.6) screws and measures 88.9 mm H × 63.5 mm W × 44.5 mm D. Terminals are 0.25 in. (6.35 mm) male quick connect. The device is encapsulated for protection against shock, vibration, and humidity, operates from -40°C to 60°C, and meets an isolation voltage of ≥2500V RMS. The trip point tolerance is ±5% or ±0.5A, whichever is less, with a hysteresis of approximately ±5%.