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To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | Startco / Littelfuse |
| Manufacturer Product Number | SE-703-0D-02 |
| Description | Ground Fault Relay; 25-500 mA; 12/24 Vdc |
| Datasheet | Download Datasheet |
The Littelfuse Startco SE-703-0D-02 is an earth-leakage monitor with a 12/24 Vdc supply.
It provides earth-fault protection for resistance- and solidly earthed systems (feeder or individual load).
Settings: 25-500 mA. Trip delay: INST-500 ms. Sensing: EFCT series zero-sequence CT (required); CT-loop monitoring.
Outputs: two isolated Form C contacts; selectable fail-safe or non-fail-safe. Analog output: 0-5 V. Harmonic filtering: standard feature.
Mounting: DIN, surface (standard); panel (with PMA-55 or PMA-60 adapter). Size: H 75 mm (3.0"); W 55 mm (2.2"); D 115 mm (4.5"). Conformally coated as standard.
Approvals: CSA certified, UL Listed (E340889), CE (European Union), RCM (Australian).
| Category | |
| Manufacturer | Startco / Littelfuse |
| Model | SE-703 |
| Monitoring Function | Earth-fault protection for resistance- and solidly earthed systems (feeder or individual load) |
| Ground Fault Current Range | 25-500 mA |
| Required Accessories | EFCT Series zero-sequence CT (required); CT-loop monitoring |
| Input Voltage | 12/24 Vdc |
| Trip Delay | INST-500 ms |
| Analog Output | 0-5 V |
| IEEE Device Numbers | Ground fault (50G/N, 51G/N) |
| Harmonic Filtering | Standard feature |
| Conformal Coating | Yes |
| Contact Configuration | Two isolated Form C contacts; Selectable fail-safe or non-fail-safe |
| Mounting Type | DIN, Surface (standard); Panel (with PMA-55 or PMA-60 adapter) |
| Dimensions | H 75 mm (3.0"); W 55 mm (2.2"); D 115 mm (4.5") |
| Approvals | CSA certified, UL Listed (E340889), CE (European Union), RCM (Australian) |