189 products

189 products

Monitoring Relays

189 products

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  1. CM-CT 600/1 Current transformer 5VA, class 1
    1SVR450117R1400
    out of stock
    The CM-CT 600/1 is a plug-in current transformer from the CM-CT range. The current transformer has a rated primary current of 600 A and a secondary rated current of 1 A. The burden of the current transformer is 5 VA and its precision is according to class 1. The CM-CT 600/1 will be delivered with foot angle, insulating protective cap and bar fastening screws. A snap-on mounting for DIN rail is avaiable as accessory. Learn More
  2. CM-ENS.31S Liquid level monitoring relay 2c/o, sensitivity 0.1-1000kOhm
    1SVR730850R0300
    out of stock
    The CM-ENS.31S belongs to the CM liquid level monitoring relay range. It operates with a rated control supply voltage of 24 - 240 V AC/DC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It monitors liquid levels of conductive fluids and protects pumps against dry running or tanks against overflow. The working principle as well as the sensitivity can be selected via front-face potentiometers. Furthermore, an ON-delay or an OFF-delay can be adjusted within a range of 0.1 to 10 s. Several electrodes and a sealable transparent cover for protection against unauthorized changes are available as accessory. The device offers screw connection technology with double-chamber cage connection terminals. Learn More
  3. CM-LWN Motor load monitor, 2x1c/o L1-L2-L3=500VAC,L1/k-L1/l=20A,380-440VAC
    1SVR450332R0100
    out of stock
    The CM-LWN relay is from the CM motor load monitors range. This relay operates with a rated control supply voltage of 380-440 V AC, has a 2 x 1 c/o (SPDT) output with contacts rated at 250 V / 4 A and works according to the closed-circuit principle. Its measuring principle is based on the evaluation of the phase shift between the voltage and the current in one phase of single- or three-phase asynchronous motors (squirrel cage). The measuring circuit is designed for measuring voltages of 110-500 V AC and measuring currents of 2-20 A AC. The window (over- and underload) monitoring allows setting of two individual threshold values, one for maximum load and one for minimim load. The hysteresis is fixed at 4 ° related to the phase angle. The tripping delay is adjustable within a range of 0.2 to 2 s and the start-up delay within a range of 0.3 to 30 s. A sealable transparent cover for protection against unauthorized changes is available as accessory. Learn More
  4. CM-SFS.22S Current monitoring relay 2c/o,B-C=0.3-15A RMS, 24-240VAC/DC
    1SVR730760R0500
    out of stock
    The CM-SFS.22S is a single-functional current monitoring relay from the CM single-phase monitors range. This monitoring relay operates with a rated control supply voltage of 24 - 240 V AC / DC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It provides a RMS measuring principle for DC and AC currents with 3 measuring ranges: 0.3-1.5 A, 1-5 A and 3-15 A. The CM-SFS.22S offers window (over- and undercurrent) monitoring as well as selection of ON- or OFF-delay, open- or closed-circuit operating principle, with or without latching function. The output contacts can be configured as 1x2 c/o (SPDT) (common signal) or 2x1 c/o (SPDT) (separate signal for minimum and maximum thresholds) operation. The hysteresis is fixed at 5 % of the threshold value. The tripping delay and the start-up delay are adjustable over a range of instantaneous to 30 s (0, 0.1-30 s). A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers screw connection technology with double-chamber cage connection terminals. Learn More
  5. CM-SRS.21S Current monitoring relay 2c/o, B-C=3mA-1A RMS, 220-240VAC
    1SVR730841R1400
    out of stock
    The CM-SRS.21S is a single-functional current monitoring relay from the CM single-phase monitors range. This monitoring relay operates with a rated control supply voltage of 220 - 240 V AC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It provides a RMS measuring principle for DC and AC currents with 3 measuring ranges: 3-30 mA, 10-100 mA and 0.1-1 A and works according to the open-circuit principle. The CM-SRS.21S is configurable for over- or undercurrent monitoring. The hysteresis is adjustable within a range of 3 to 30 % of the threshold value and the tripping delay is adjustable over a range of instantaneous to 30 s (0, 0.1-30 s). A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers screw connection technology with double-chamber cage connection terminals. Learn More
  6. CM-TCS.13P Temperature monitoring relay Temp.-range 0...+200°C, 24-240VAC/DC
    1SVR740740R0300
    out of stock
    CM-TCS.13P Temperature monitoring relay Temp.-range 0...+200°C, 24-240VAC/DC Learn More
  7. CM-TCS.13S Temperature monitoring relay Temp.-range 0...+200°C, 24-240VAC/DC
    1SVR730740R0300
    out of stock
    CM-TCS.13S Temperature monitoring relay Temp.-range 0...+200°C, 24-240VAC/DC Replacement for 1SVR630740R0300 Learn More
  8. CM-ESS.2P Voltage monitoring relay 2c/o, B-C=3-600VRMS, 110-130VAC
    1SVR740831R0400
    out of stock
    The CM-ESS.2P is a single-functional voltage monitoring relay from the CM single-phase monitors range. This monitoring relay operates with a rated control supply voltage of 110 - 130 V AC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It provides a RMS measuring principle for DC and AC voltages with 4 measuring ranges: 3-30 V, 6-60 V, 30-300 V and 60-600 V and works according to the open-circuit principle. The CM-ESS.2P is configurable for over- or undervoltage monitoring. The hysteresis is adjustable within a range of 3 to 30 % of the threshold value and the tripping delay is adjustable over a range of instantaneous to 30 s (0, 0.1-30 s). A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers maintenance free Easy Connect Technology with push-in terminals. Learn More
  9. CM-CT 150/1 Current transformer 2.5VA, class 1
    1SVR450116R1300
    out of stock
    The CM-CT 150/1 is a plug-in current transformer from the CM-CT range. The current transformer has a rated primary current of 150 A and a secondary rated current of 1 A. The burden of the current transformer is 2.5 VA and its precision is according to class 1. The CM-CT 150/1 will be delivered with foot angle, insulating protective cap and bar fastening screws. A snap-on mounting for DIN rail is avaiable as accessory. Learn More
  10. CM-CT 300/5 Current transformer 5VA, class 1
    1SVR450117R5100
    out of stock
    The CM-CT 300/5 is a plug-in current transformer from the CM-CT range. The current transformer has a rated primary current of 300 A and a secondary rated current of 5 A. The burden of the current transformer is 5 VA and its precision is according to class 1. The CM-CT 300/5 will be delivered with foot angle, insulating protective cap and bar fastening screws. A snap-on mounting for DIN rail is avaiable as accessory. Learn More
  11. CM-LWN Motor load monitor, 2x1c/o L1-L2-L3=500VAC, L1/k-l=5A, 24-240VAC/DC
    1SVR450335R0000
    out of stock
    The CM-LWN relay is from the CM motor load monitors range. This relay operates with a rated control supply voltage of 24-240 V AC / DC, has a 2 x 1 c/o (SPDT) output with contacts rated at 250 V / 4 A and works according to the closed-circuit principle. Its measuring principle is based on the evaluation of the phase shift between the voltage and the current in one phase of single- or three-phase asynchronous motors (squirrel cage). The measuring circuit is designed for measuring voltages of 110-500 V AC and measuring currents of 0.5-5 A AC. The window (over- and underload) monitoring allows setting of two individual threshold values, one for maximum load and one for minimim load. The hysteresis is fixed at 4 ° related to the phase angle. The tripping delay is adjustable within a range of 0.2 to 2 s and the start-up delay within a range of 0.3 to 30 s. A sealable transparent cover for protection against unauthorized changes is available as accessory. Learn More
  12. CM-CT 75/5 Current transformer 1.5VA, class 1
    1SVR450116R5100
    out of stock
    The CM-CT 75/5 is a plug-in current transformer from the CM-CT range. The current transformer has a rated primary current of 75 A and a secondary rated current of 5 A. The burden of the current transformer is 1.5 VA and its precision is according to class 1. The CM-CT 75/5 will be delivered with foot angle, insulating protective cap and bar fastening screws. A snap-on mounting for DIN rail is avaiable as accessory. Learn More
  13. CM-SRS.M2S Current monitoring relay 2c/o,B-C=0.3-15A RMS, 24-240VAC/DC
    1SVR730840R0700
    out of stock
    The CM-SRS.M2S is a multifunctional current monitoring relay from the CM single-phase monitors range. This monitoring relay operates with a rated control supply voltage of 24 - 240 V AC / DC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It provides a RMS measuring principle for DC and AC currents with 3 measuring ranges: 0.3-1.5 A, 1-5 A and 3-15 A. The CM-SRS.M2S offers selection of over- or undercurrent monitoring, open- or closed-circuit operating principle, with or without latching function. The hysteresis is adjustable within a range of 3 to 30 % of the threshold value. The tripping delay and the start-up delay are adjustable over a range of instantaneous to 30 s (0, 0.1-30 s). A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers screw connection technology with double-chamber cage connection terminals. Learn More
  14. CM-MSS.12P Therm. motor protec. relay 1c/o, 24VAC/DC
    1SVR740700R0100
    out of stock
    The CM-MSS.12P belongs to the CM-MSS thermistor motor protection relay range. It operates with a rated control supply voltage of 24 V AC/DC and has a 1 c/o (SPDT) output with contacts rated at 250 V / 4 A. It features one sensor circuit to monitor PTC temperature sensors and works according to the closed-circuit principle. The relay will be reset automatically after the failure has been removed. A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers maintenance free Easy Connect Technology with push-in terminals. Learn More
  15. CM-TCS.22S Temperature monitoring relay Temp.-range 0...+100°C, 24VAC/DC
    1SVR730740R9200
    out of stock
    CM-TCS.22S Temperature monitoring relay Temp.-range 0...+100°C, 24VAC/DC Replacement for 1SVR630740R9200 Learn More
  16. CM-MSS.33S Therm. motor protec. relay 2c/o, 110-130VAC/220-240VAC
    1SVR730712R2200
    out of stock
    The CM-MSS.33S belongs to the CM-MSS thermistor motor protection relay range. It operates with a rated control supply voltage of 110-130 V AC and 220-240 V AC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It features one sensor circuit to monitor PTC temperature sensors and works according to the closed-circuit principle. The sensor circuit of this CM-MSS.33S is short-circuit, as well as interrupted-wire monitored and the relay can be reset automatically, manually or remotely after the failure has been removed. This protection relay is certified according to the ATEX directive 94/9/EC and is equipped with a reset / test button. A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers screw connection technology with double-chamber cage connection terminals. Learn More
  17. CM-UFD.M34 Grid feeding monitoring relay 3c/o,L-L= 0-540VAC,L-N=0-312VAC
    1SVR560730R3403
    out of stock
    CM-UFD.M34 Grid feeding monitoring relay 3c/o,L-L= 0-540VAC,L-N=0-312VAC acc. DEWA standard Learn More
  18. CM-MSS.32P Therm. motor protec. relay 2c/o, 24VAC/DC
    1SVR740712R0200
    out of stock
    The CM-MSS.32P belongs to the CM-MSS thermistor motor protection relay range. It operates with a rated control supply voltage of 24 V AC/DC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It features one sensor circuit to monitor PTC temperature sensors and works according to the closed-circuit principle. The sensor circuit of this CM-MSS.32P is short-circuit, as well as interrupted-wire monitored and the relay can be reset automatically, manually or remotely after the failure has been removed. This protection relay is certified according to the ATEX directive 94/9/EC and is equipped with a reset / test button. A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers maintenance free Easy Connect Technology with push-in terminals. Learn More
  19. CM-MSS.51P Therm. motor protec. relay 2x1c/o, 24-240VAC/DC
    1SVR740712R1300
    out of stock
    The CM-MSS.51P belongs to the CM thermistor motor protection relay range. It operates with a rated control supply voltage of 24 - 240 V AC / DC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It features two sensor circuit to monitor PTC temperature sensors (single or accumulative evaluation, configurable) and works according to the closed-circuit principle. The sensor circuits of this CM-MSS.51P are short-circuit (configurable), as well as interrupted-wire monitored and can be reset automatically, manually or remotely after the failure has been removed. This protection relay is certified according to the ATEX directive 94/9/EC and is equipped with a reset / test button. The non-volatile fault storage, the short circuit detection and the accumulative evaluation can be enabled/disabled via DIP switches. A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers maintenance free Easy Connect Technology with push-in terminals. Learn More
  20. CM-LWN Motor load monitor, 2x1c/o L1-L2-L3=500VAC,L1/k-L1/l=20A,110-130VAC
    1SVR450330R0100
    out of stock
    The CM-LWN relay is from the CM motor load monitors range. This relay operates with a rated control supply voltage of 110-130 V AC, has a 2 x 1 c/o (SPDT) output with contacts rated at 250 V / 4 A and works according to the closed-circuit principle. Its measuring principle is based on the evaluation of the phase shift between the voltage and the current in one phase of single- or three-phase asynchronous motors (squirrel cage). The measuring circuit is designed for measuring voltages of 110-500 V AC and measuring currents of 2-20 A AC. The window (over- and underload) monitoring allows setting of two individual threshold values, one for maximum load and one for minimim load. The hysteresis is fixed at 4 ° related to the phase angle. The tripping delay is adjustable within a range of 0.2 to 2 s and the start-up delay within a range of 0.3 to 30 s. A sealable transparent cover for protection against unauthorized changes is available as accessory. Learn More
  21. CM-MSS.41P Therm. motor protec. relay 2c/o, 24-240VAC/DC
    1SVR740712R1200
    out of stock
    The CM-MSS.41P belongs to the CM-MSS thermistor motor protection relay range. It operates with a rated control supply voltage of 24 - 240 V AC / DC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It features one sensor circuit to monitor PTC temperature sensors and works according to the closed-circuit principle. The sensor circuit of this CM-MSS.41P is short-circuit (configurable), as well as interrupted-wire monitored and can be reset automatically, manually or remotely after the failure has been removed. This protection relay is certified according to the ATEX directive 94/9/EC and is equipped with a reset / test button. The non-volatile fault storage and the short circuit detection can be enabled/disabled via DIP switches. A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers maintenance free Easy Connect Technology with push-in terminals. Learn More
  22. CM-ENS.23S Liquid level monitoring relay 1c/o, sensitivity 0.1-1000kOhm
    1SVR730850R2200
    out of stock
    The CM-ENS.23S belongs to the CM liquid level monitoring relay range. It operates with a rated control supply voltage of 110-130 V AC and 220-240 V AC and has a 1 c/o (SPDT) output with contacts rated at 250 V / 4 A. It monitors liquid levels of conductive fluids and protects pumps against dry running or tanks against overflow. The working principle as well as the sensitivity can be selected via front-face potentiometers. Several electrodes and a sealable transparent cover for protection against unauthorized changes are available as accessory. The device offers screw connection technology with double-chamber cage connection terminals. Learn More
  23. CM-MSS.12S Therm. motor protec. relay 1c/o, 24VAC/DC
    1SVR730700R0100
    out of stock
    The CM-MSS.12S belongs to the CM-MSS thermistor motor protection relay range. It operates with a rated control supply voltage of 24 V AC/DC and has a 1 c/o (SPDT) output with contacts rated at 250 V / 4 A. It features one sensor circuit to monitor PTC temperature sensors and works according to the closed-circuit principle. The relay will be reset automatically after the failure has been removed. A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers screw connection technology with double-chamber cage connection terminals. Learn More
  24. CM-MSS.23P Therm. motor protec. relay 2c/o, 110-130VAC/220-240VAC
    1SVR740700R2200
    out of stock
    The CM-MSS.23P belongs to the CM-MSS thermistor motor protection relay range. It operates with a rated control supply voltage of 110-130 V AC and 220-240 V AC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It features one sensor circuit to monitor PTC temperature sensors and works according to the closed-circuit principle. The relay can be reset automatically, manually or remotely after the failure has been removed. A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers maintenance free Easy Connect Technology with push-in terminals. Learn More
  25. CM-ESS.C1S Voltage monitoring relay 2c/o, B-C=3-30VRMS, 24-240VAC/DC
    1SVR730983R0100
    out of stock
    CM-ESS.C1S Voltage monitoring relay 2c/o, B-C=3-30VRMS, 24-240VAC/DC Replacement for 1SVR430983R0100 Learn More
  26. CM-MSE Thermistor motor protection relay 1n/o, 24VAC
    1SVR550805R9300
    out of stock
    The CM-MSE relay is from the CM thermistor motor protection relay range. This relay operates with a rated control supply voltage of 24 V AC and has a 1 n/o output contact rated at 250 V / 4 A. It features one sensor circuit for monitoring of PTC temperature sensors or bimetals. This relay offers automatic reset and works according to the closed-circuit principle. A sealable transparent cover for protection against unauthorized changes is available as accessory Learn More
  27. CM-MPN.72P Three-phase monitoring relay 2c/o, 0,0.1-30s, L1-L2-L3=3x530-820VAC
    1SVR760489R8300
    out of stock
    The CM-MPN.72P is a multifunctional relay from the CM three-phase monitors range. It operates with a rated control supply voltage / three-phase measuring voltage of 530-820 V AC 50/60 Hz and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. This relay monitors all phase parameters such as over/undervoltage, phase unbalance and phase failure. The corresponding threshold values are adjustable. The CM-MPN.72P also offers selection of phase sequence monitoring, automatic phase sequence correction as well as an ON or OFF tripping delay. The output contacts can be configured as 1x2 c/o (SPDT) contacts (common signal) or 2x1 c/o (SPDT) contact (separate signal for over- and undervoltage thresholds) operation. The tripping delay is adjustable over a range of instantaneous to 30 s (0, 0.1-30 s). A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers maintenance free Easy Connect Technology with push-in terminals. Learn More
  28. CM-ENS.31P Liquid level monitoring relay 2c/o, sensitivity 0.1-1000kOhm
    1SVR740850R0300
    out of stock
    The CM-ENS.31P belongs to the CM liquid level monitoring relay range. It operates with a rated control supply voltage of 24 - 240 V AC/DC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It monitors liquid levels of conductive fluids and protects pumps against dry running or tanks against overflow. The working principle as well as the sensitivity can be selected via front-face potentiometers. Furthermore, an ON-delay or an OFF-delay can be adjusted within a range of 0.1 to 10 s. Several electrodes and a sealable transparent cover for protection against unauthorized changes are available as accessory. The device offers maintenance free Easy Connect Technology with push-in terminals. Learn More
  29. CM-ENS.23P Liquid level monitoring relay 1c/o, sensitivity 0.1-1000kOhm
    1SVR740850R2200
    out of stock
    The CM-ENS.23P belongs to the CM liquid level monitoring relay range. It operates with a rated control supply voltage of 110-130 V AC and 220-240 V AC and has a 1 c/o (SPDT) output with contacts rated at 250 V / 4 A. It monitors liquid levels of conductive fluids and protects pumps against dry running or tanks against overflow. The working principle as well as the sensitivity can be selected via front-face potentiometers. Several electrodes and a sealable transparent cover for protection against unauthorized changes are available as accessory. The device offers maintenance free Easy Connect Technology with push-in terminals. Learn More
  30. CM-PSS.31P Three-phase monitoring relay 2c/o, 0,0.1-30s, L1-L2-L3=3x380VAC
    1SVR740784R2300
    out of stock
    The CM-PSS.31P relay is from the CM three-phase monitors range. This relay operates with a rated control supply voltage / three-phase measuring voltage of 380 V AC and has a 2 c/o output with contacts rated at 250 V / 4 A. The CM-PSS.31P monitors the phase parameters over/undervoltage and phase failure. Phase sequence monitoring as well as an ON or OFF tripping delay are selectable. The tripping delay is adjustable over a range of instantaneous to 30 s (0, 0.1-30 s). A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers maintenance free Easy Connect Technology with push-in terminals. Learn More
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