Littelfuse SE-704-0D, SE-704 Series, Earth-Leakage Monitor, Grounded Systems, 12/24VDC
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The SE-704 series is a microprocessor-based, earth-leakage monitor for solidly grounded and resistance-grounded ac systems. It offers very sensitive ground-fault detection as low as 10 mA and can be used on systems with significant harmonic content. The SE-704’s output relay can operate in a fail-safe or non-fail-safe mode for undervoltage or shunt-trip applications. The output contacts can be connected for use in protective tripping circuits (such as for marina or boatyard feeder circuits) or in alarm indication circuits. The analog output can be used with a PLC or a meter. The SE-704 can be integrated with a shunt trip circuit breaker to meet CE code C22.1-21 Section 78-052(2) and NEC article 555.35(A)(1), 555.35(3), and 555.53 for marina applications.
| IEEE Device Numbers | Ground fault (50G/N, 51G/N) |
| Input Voltage | See ordering information |
| Dimensions |
H 75 mm (3.0"); W 55 mm (2.2"); D 115 mm (4.5") |
| Trip Level Settings | 10 mA-5.0 A |
| Trip Time Settings | 30-2000 ms |
| Contact Operating Mode | Selectable fail-safe or non-fail-safe |
| Harmonic Filtering | Standard feature |
| Test Button | Standard feature |
| Reset Button | Standard feature |
| CT-Loop Monitoring | Standard feature |
| Output Contacts | Isolated Form A and Form B |
| Analog Output | 0-5 V & 0-1 mA |
| Approvals |
UL Listed (E340889), CSA, CE (European Union) C-Tick (Australian) |
| Conformally coated | Optional |
| Warranty | 5 years |
| Mounting |
DIN, Surface (standard) Panel (with PMA-55 or PMA-60 adapter) |