Earth Leakage Relays
ELR251 Earth Leakage Relay & Core Balance Current Transformers
- 3 primary current ranges
- Latching facility
- Manual or auto reset
- Remote test & reset
Product Description
The ELR251 is a general Earth Fault Protection Relay designed to operate over a wide range of currents. Trip currents and delays can be set. Facilities exist for Remote Test and Remote Reset. Three primary current ranges cover 5–100mA, 50mA–1A and 500mA–10A. Supplied with a range of Core Balance Current Transformers (CBCTs) for primary currents from 5mA up to 30A.
Key Features
- General Earth Fault Protection Relay
- Latching facility — manual or auto reset
- 3 primary current ranges: 5–100mA, 50mA–1A, 500mA–10A
- Remote Test and Remote Reset facilities
- Trip delay 100ms to 10 seconds
- Wide auxiliary supply range: 400, 230, 110, 48 or 24V AC; 48 or 24V DC
- DIN43880, 3 modules wide enclosure
- Range of Core Balance CTs available — 38mm to 210mm dia. & busbar
- 5-year warranty
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