Littelfuse, Inc. SE-703 Series – Earth-Leakage Monitor SE-703-0U-00

The SE-703-0U-00 is a microprocessor-based earth-leakage monitor designed for resistance- and solidly earthed systems, with a 120/240 Vac/Vdc power supply. It features adjustable ground-fault detection from 25 mA to 500 mA and trip delays from instantaneous to 500 ms. The relay includes two isolated Form C output contacts for tripping or alarm circuits, a 0-5 V analog output, CT-loop monitoring, harmonic filtering, and non-volatile trip memory. It is conformally coated and supports DIN rail or surface mounting, with panel mounting requiring the PMA-60 adapter. Dimensions are 75 mm H × 55 mm W × 115 mm D. It complies with AS/NZS 2081:2011 and is CSA certified, UL Listed, CE marked, and RCM compliant.