We supply a wide range of relays for voltage and monitoring in 1-phase, 3-phase, AC and DC networks. Simple, 1-module designs perform basic functions, and 3-module designs for more accurate measurements in multiple ranges with galvanic separation of power supply from the measured circuit. 

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HRN3-70

HRN3-70

Voltage monitoring relays in 3P with adjustable levels
On request
£ 94.50 excl. VAT
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HRN-41

HRN-41

The relay protects overvoltage / undervoltage of AC and DC in three ranges
In stock
from £ 74.50 excl. VAT
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HRN-42

HRN-42

The relay protects overvoltage / undervoltage AC and DC in three ranges
Not in stock
from £ 74.50 excl. VAT
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HRN-43

HRN-43

The relay protects overvoltage / undervoltage, sequence, failure and phase asymmetry
Not in stock
from £ 64.50 excl. VAT
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HRN-43N

HRN-43N

The relay protects overvoltage / undervoltage, sequence, failure and phase asymmetry
On request
from £ 64.50 excl. VAT
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HRN-56

HRN-56

The relay monitors undervoltage, sequence and phase failure
Not in stock
from £ 35 excl. VAT
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