Littelfuse, Inc. SE-704 Series – Earth-Leakage Monitor SE-704-03

The SE-704-03 is a microprocessor-based earth-leakage monitor for grounded systems, designed for 24 V ac operation. It provides ground-fault detection from 10 mA to 5 A with adjustable time delays of 30 ms to 2.0 s. The device features isolated Form A and Form B output contacts, an analog output (0-5 V and 0-1 mA), CT-loop monitoring, harmonic filtering, and selectable fail-safe or non-fail-safe operating mode. It is conformally coated option available and mounts on DIN rail or surface. Dimensions are 75 mm H × 55 mm W × 115 mm D. It meets UL Listed (E340889), CSA, CE, and C-Tick certifications. The unit retains trip state memory and includes test and reset buttons. A 5-year warranty is provided.