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Earth Fault Relays

These units ensure the protection of electrical installations. 30mA versions can provide supplementary protection against direct connection. This range of electronic earth fault relays provides monitoring of earth fault currents. When the fault current rises above the selected level, the output contacts of the product operate. Depending on the relay selected, it can have either fixed or adjustable sensitivity, a time delay is also available for selectivity purposes. The relays are linked with detection torroids, different types are available, circular and rectangular in section.
Common Characteristics
  • Positive safety: the relay trips in the event of a break in the relay/torroid link.
  • Positive reset required after a fault is detected.
  • Test button for simulation of a fault.
  • Protected against nuisance tripping from transients.
  • DC sensitive.
  • Output: 1 C/O contact 250V~ 5/6A AC1.
  • Visual display of fault by red LED.
 
Specific Device Features
  • LCD display on HR525 & HR534.
  • Adjustment of sensitivity and delay (selectable).
  • Extra positive safety contact (1C/O 250V~ 6A AC1).
  • Display of fault current before it triggers the relay (5% to 75%).
  • Extra output contact (250V 0.1A max.) to enable remote indication if fault currents over 50% of I∆n.
  • Remote test and reset (opto-coupled).

With Integral Torroids

HR440 EARTH LEAK REL 0.03-3A DELAY50%TORR 25
HR440
Cat ref.  Description Trade Price* 
HR440EARTH LEAKAGE RELAY 0.03-3A TIME DELAY 50%TORROID 25MM631.82 £ / prt.
prt.
HR441EARTH LEAKAGE RELAY 0.03-3A TIME DELAY 50%TORROID 35MM631.82 £ / prt.
prt.

With Separate Detection Torroids

HR500 EARTH LEAKAGE RELAY 0.03A INSTANT TRIP
HR500
Cat ref.  Description Trade Price* 
HR500EARTH LEAKAGE RELAY 0.03A INSTANT TRIP248.63 £ / prt.
prt.
HR502EARTH LEAKAGE RELAY 0.3A INSTANT TRIP248.63 £ / prt.
prt.
HR510EARTH LEAKAGE RELAY 0.03-10A TIME DELAY363.79 £ / prt.
prt.
HR520EARTH LEAKAGE RELAY 0.03-10A TIME DELAY 50% LED464.96 £ / prt.
prt.
HR522EARTH LEAKAGE RELAY 0.03-10A TIME DELAY 50% LED TEST580.86 £ / prt.
prt.
HR523EARTH LEAKAGE RELAY 0.5-30A TIME DELAY 50% LED539.48 £ / prt.
prt.
HR525EARTH LEAKAGE RELAY 0.03-10A TIME DELAY 50% LCD TEST787.25 £ / prt.
prt.
HR534EARTH LEAKAGE RELAY 0.03-10A TIME DELAY 50% LCD TEST 4 WAYS825.32 £ / prt.
prt.
*Data is subject to errors and technical modifications. Prices are trade price, exclusive of VAT.