Monitoring Relays

Monitoring Relays: Voltage, Current, Phase and Level

Monitoring relays watch a supply or process and switch a contact when it goes out of bounds – phase loss and sequence, over/under-voltage, current, frequency, temperature (PTC) and liquid level. We stock Carlo Gavazzi and Lovato Electric monitoring relays, level controllers and float switches, plus Finder, Pizzato and ABB units.

Filter by monitored quantity and supply voltage. For timing functions see time relays; for general switching see relays; for safety-rated monitoring see safety relays.

Showing 602 products

Product Key Specs Price Qty Stock Actions
1SVR560730R3401 ABB CM-UFD.M31 Grid feeding monitoring relay 3c/o,L-L= 0-540VAC,L-N=0-312VAC ABB CM-UFD.M31 multifunctional grid feeding monitoring relay with 24-240 V AC/DC supply, 0-540 V AC…
1SVR560730R3401 ABB CM-UFD.M31 Grid feeding monitoring relay 3c/o,L-L= 0-540VAC,L-N=0-312VAC ABB CM-UFD.M31 multifunctional grid feeding monitoring relay with 24-240 V AC/DC supply, 0-540 V AC…
  • 540 V
£727.03 ex. VAT
Manufacturer Lead Time Estimated Delivery 6 weeks
SKU: 1SVR560730R3401
ABB CM-UFD.M33 Grid feeding monitoring relay 3c/o,L-L= 0-550VAC,L-N=0-317VAC ABB 1SVR560730R3402 CM-UFD.M33 grid feeding monitoring relay with 3 change-over contacts, voltage and frequency monitoring,…
ABB CM-UFD.M33 Grid feeding monitoring relay 3c/o,L-L= 0-550VAC,L-N=0-317VAC ABB 1SVR560730R3402 CM-UFD.M33 grid feeding monitoring relay with 3 change-over contacts, voltage and frequency monitoring,…
  • Frequency · 0–550 V AC
£727.03 ex. VAT
In Stock Available for delivery
SKU: 1SVR560730R3402
1SVR560731R3700 ABB CM-UFD.M22M Grid feeding monitoring rel. 3c/o,L-L=0-540VAC,L-N=0-312VAC,ModbusRTU ABB CM-UFD.M22M multifunctional grid feeding monitoring relay with Modbus RTU communication, 24-240 V AC/DC supply,…
1SVR560731R3700 ABB CM-UFD.M22M Grid feeding monitoring rel. 3c/o,L-L=0-540VAC,L-N=0-312VAC,ModbusRTU ABB CM-UFD.M22M multifunctional grid feeding monitoring relay with Modbus RTU communication, 24-240 V AC/DC supply,…
  • 540 V
£935.66 ex. VAT
Manufacturer Lead Time Estimated Delivery 4 weeks
SKU: 1SVR560731R3700
1SVR560731R3701 ABB CM-UFD.M31M Grid feeding monitoring rel. 3c/o,L-L=0-540VAC,L-N=0-312VAC,ModbusRTU ABB CM-UFD.M31M multifunctional grid feeding monitoring relay with Modbus RTU communication, 24-240 V AC/DC supply,…
1SVR560731R3701 ABB CM-UFD.M31M Grid feeding monitoring rel. 3c/o,L-L=0-540VAC,L-N=0-312VAC,ModbusRTU ABB CM-UFD.M31M multifunctional grid feeding monitoring relay with Modbus RTU communication, 24-240 V AC/DC supply,…
  • 540 V
£935.66 ex. VAT
Manufacturer Lead Time Estimated Delivery 4 weeks
SKU: 1SVR560731R3701
1SVR560731R3703 ABB CM-UFD.M34M Grid feeding monitoring rel. 3c/o,L-L=0-540VAC,L-N=0-312VAC,ModbusRTU ABB 1SVR560731R3703 CM-UFD.M34M multifunctional grid feeding monitoring relay with Modbus RTU, three changeover contacts and…
1SVR560731R3703 ABB CM-UFD.M34M Grid feeding monitoring rel. 3c/o,L-L=0-540VAC,L-N=0-312VAC,ModbusRTU ABB 1SVR560731R3703 CM-UFD.M34M multifunctional grid feeding monitoring relay with Modbus RTU, three changeover contacts and…
  • Frequency
£935.66 ex. VAT
Manufacturer Lead Time Estimated Delivery 4 weeks
SKU: 1SVR560731R3703
2CSM142120R1201 ABB Residual Current Monitor RD2 - Type A ABB 2CSM142120R1201 RD2 Type A residual current monitor with adjustable sensitivity and intervention delay, external…
2CSM142120R1201 ABB Residual Current Monitor RD2 - Type A ABB 2CSM142120R1201 RD2 Type A residual current monitor with adjustable sensitivity and intervention delay, external…
  • Earth leakage / residual current
£259.42 ex. VAT
In Stock Available for delivery
SKU: 2CSM142120R1201
ABB CM-UFD.M33M G99+coms Grid feeding relay with Modbus ABB CM-UFD.M33M multifunction grid feeding monitoring relay with Modbus RTU communication, G99 compliant protection functions…
ABB CM-UFD.M33M G99+coms Grid feeding relay with Modbus ABB CM-UFD.M33M multifunction grid feeding monitoring relay with Modbus RTU communication, G99 compliant protection functions…
  • Frequency · 0–317 V AC
£935.66 ex. VAT
Manufacturer Lead Time Estimated Delivery 4 - 5 Days
SKU: CM-UFD.M33M
PMA20240 - CURR.REL.1OUT.24-240VAC/DC MAX CURR. Lovato PMA20240 single-phase AC/DC maximum current monitoring relay with selectable 5 A or 16 A…
PMA20240 - CURR.REL.1OUT.24-240VAC/DC MAX CURR. Lovato PMA20240 single-phase AC/DC maximum current monitoring relay with selectable 5 A or 16 A…
  • Current · Single-phase · Manual or automatic
£139.54 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: PMA20240
PMA30240 - CURR.REL.1OUT.24-240VAC/DC MIN-MAX CURR. Lovato PMA30240 AC/DC minimum or maximum current monitoring relay for single-phase and three-phase systems with…
PMA30240 - CURR.REL.1OUT.24-240VAC/DC MIN-MAX CURR. Lovato PMA30240 AC/DC minimum or maximum current monitoring relay for single-phase and three-phase systems with…
  • Current · Single-phase · Adjustable
£157.74 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: PMA30240
PMA40240 - CURR.REL.2OUT.24-240VAC/DC MIN-MAX CURR. Lovato PMA40240 minimum and maximum AC/DC current monitoring relay for single-phase and three-phase systems, with…
PMA40240 - CURR.REL.2OUT.24-240VAC/DC MIN-MAX CURR. Lovato PMA40240 minimum and maximum AC/DC current monitoring relay for single-phase and three-phase systems, with…
  • Current · Single-phase · Manual or automatic
£188.98 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: PMA40240
PMA50A240 - PUMP PROTECTION RELAY 220-240VAC Lovato PMA50A240 pump protection relay for single-phase and three-phase systems, providing maximum AC current, minimum…
PMA50A240 - PUMP PROTECTION RELAY 220-240VAC Lovato PMA50A240 pump protection relay for single-phase and three-phase systems, providing maximum AC current, minimum…
  • Power / cos φ · Three-phase
£178.54 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: PMA50A240
PMA50A415 - PUMP PROTECTION RELAY 380-415VAC Lovato PMA50A415 pump protection relay for single-phase and three-phase systems, providing maximum AC current, minimum…
PMA50A415 - PUMP PROTECTION RELAY 380-415VAC Lovato PMA50A415 pump protection relay for single-phase and three-phase systems, providing maximum AC current, minimum…
  • Power / cos φ · Three-phase · Manual or automatic
£178.54 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: PMA50A415
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