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Monitoring devices

273 products
Accessories11 productsEquipment for insulation fault location2 productsFault annunciators25 productsInsulation monitors33 productsMeasuring relays / Monitoring relays197 productsResidual current monitors5 products
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Showing 169–192 of 273 results

DOLD RL 5889 – Insulation monitor

DOLD RL 5889 – Insulation monitor

35 mm

Insulation monitor

  • Preventive fire and system protection
  • Detection of symmetric and asymmetric insulation faults
  • Universal application in non-earthed AC, DC, AC/DC networks up to max. 300 V
  • Suitable for large leakage capacitances up to 30 μF
  • Monitoring also with voltage-free mains
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DOLD RL 9075 – Fuse Monitor

DOLD RL 9075 – Fuse Monitor

35 mm

Fuse Monitor

  • Increasing the availability of plants by early detection of blown fuses, that may cause damage if undetected
  • Fast detection of blown fuses also with disconnected load availability of your plant on request
  • Reliable detection of blown fuses inspite of:- asymmetric mains- harmonic content
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DOLD RL 9877 – Phase monitor

DOLD RL 9877 – Phase monitor

35 mm

Phase monitor

  • Preventive maintenance
  • For better productivity
  • Always right directions of motors and pumps
  • Safe monitoring of motors and plants with phase failure detection
  • High repeat accuracy
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DOLD RN 5883 – Residual current monitor, Type B

DOLD RN 5883 – Residual current monitor, Type B

52.5 mm

Residual current monitor, Type B

  • Preventive fire and system protection
  • Increasing the availability of plants by early fault detection
  • Universal usage at AC/DC mains
  • Protection against manipulation by sealable transparent cover over setting switches
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DOLD RN 5884 – Residual Current monitor, Type B

DOLD RN 5884 – Residual Current monitor, Type B

52.5 mm

Residual Current monitor, Type B

  • Preventive fire and system protection
  • Increasing the availability of plants by early fault detection
  • Universal usage at AC/DC mains
  • Protection against manipulation by sealable transparent cover over setting switches
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DOLD RN 5893 – Insulation monitor

DOLD RN 5893 – Insulation monitor

52.5 mm

Insulation monitor

  • Suitable for DC charging stations for electric vehicles acc. to IEC/EN 61851-23:2014/AC:2016-06
  • Preventive fire and system protection
  • Detection of symmetric and asymmetric insulation faults
  • Quick fault localisation through selective earth fault detection to L+ and L-
  • Universal application in non-earthed AC, DC, AC/DC networks up to AC max. 250 V or DC max. 300 V
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DOLD RN 5893/100 – Insulation monitor

DOLD RN 5893/100 – Insulation monitor

52.5 mm

Insulation monitor

  • Suitable for DC charging stations for electric vehicles acc. to IEC/EN 61851-23:2014/AC:2016-06
  • Insulation monitoring according to IEC/EN 61557-8
  • Universal application in non-earthed AC-, DC-, AC/DC networks up to AC max. 250 V resp. DC max. 300 V
  • Connection of an external coupling device RP 5898 for voltages up to AC 690 V / DC 1000 V possible
  • Extended operating temperature range of – 40 … + 70 °C
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DOLD RN 5897 – Insulation monitor

DOLD RN 5897 – Insulation monitor

52.5 mm

Insulation monitor

  • Acc. to DIN VDE 0100-551 for mobile generator sets
  • Preventive fire and system protection
  • Detection of symmetric and asymmetric insulation faults
  • Quick fault localisation through selective earth fault detection to L+ and L-
  • Universal application in non-earthed AC, DC, AC/DC networks up to 300 V
Read more
DOLD RN 5897/010 – Insulation monitor

DOLD RN 5897/010 – Insulation monitor

52.5 mm

Insulation monitor

  • Preventive fire and system protection
  • Detection of symmetric and asymmetric insulation faults
  • Quick fault localisation through selective earth fault detection to L+ and L-
  • Universal application in non-earthed AC, DC, AC/DC networks up to AC max. 250 V or DC max. 300 V
  • With connection facility of an external coupling device:RL 5898 for voltages up to AC 400 V / DC 500 VRP 5898 for voltages up to AC 690 V / DC 1000 VRR 5898*) for voltages up to AC 1000 V / DC 1500 V
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DOLD RN 5897/011 – Insulation monitor

DOLD RN 5897/011 – Insulation monitor

52.5 mm

Insulation monitor

  • Preventive fire and system protection
  • Detection of symmetric and asymmetric insulation faults
  • Quick fault localisation through selective earth fault detection to L+ and L-
  • Universal application in non-earthed AC, DC, AC/DC networks up to AC max. 250 V or DC max. 300 V
  • With connection facility of an external coupling device:RL 5898 for voltages up to AC 400 V / DC 500 VRP 5898 for voltages up to AC 690 V / DC 1000 VRR 5898*) for voltages up to AC 1000 V / DC 1500 V
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DOLD RN 5897/020 – Insulation monitor

DOLD RN 5897/020 – Insulation monitor

52.5 mm

Insulation monitor

  • Suitable for DC charging stations for electric vehicles acc. to IEC/EN 61851-23:2014/AC:2016-06
  • Insulation monitoring according to IEC/EN 61557-8
  • With connection facility of an external coupling device RL 5898 for voltages up to AC 400 V / DC 500 V or RP 5898 for voltages up to AC 690 V / DC 1000 V
  • Very fast reaction time ≤ 1 s
  • Optimised insulation resistance monitoring also during mains voltage variation
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DOLD RN 5897/021 – Insulation monitor

DOLD RN 5897/021 – Insulation monitor

52.5 mm

Insulation monitor

  • Suitable for DC charging stations for electric vehicles acc. to IEC/EN 61851-23:2014/AC:2016-06
  • Preventive fire and system protection
  • Detection of symmetric and asymmetric insulation faults
  • Quick fault localisation through selective earth fault detection to L+ and L-
  • Universal application in non-earthed AC, DC, AC/DC networks up to AC max. 250 V or DC max. 300 V
Read more
DOLD RN 5897/240 – Insulation monitor

DOLD RN 5897/240 – Insulation monitor

52.5 mm

Insulation monitor

  • Insulation monitoring according to IEC/EN 61557-8
  • Suitable for DC charging stations for electric vehicles acc. to IEC/EN 61851-23:2014/AC:2016-06
  • Universal application in non-earthed AC, DC, AC/DC networks up to AC max. 250 V or DC max. 300 V
  • With connection facility of an external coupling device RL 5898 for voltages up to AC 400 V / DC 500 V or RP 5898 for voltages up to AC 690 V / DC 1000 V
  • Extended operating temperature range of – 40 … + 70 °C
Read more
DOLD RN 5897/300 – Insulation monitor

DOLD RN 5897/300 – Insulation monitor

52.5 mm

Insulation monitor

  • For mobile generator sets according to DIN VDE 0100-551
  • Preventive fire and system protection
  • Detection of symmetric and asymmetric insulation faults
  • Universal application in non-earthed AC, DC, AC/DC networks up to max. 300 V
  • Easy adjustment of response values and setting parameter via rotational switch
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DOLD RN 5897/311 – Insulation monitor

DOLD RN 5897/311 – Insulation monitor

52.5 mm

Insulation monitor

  • Preventive fire and system protection
  • Detection of symmetric and asymmetric insulation faults
  • Quick fault localisation through selective earth fault detection to L+ and L-
  • Universal application in non-earthed AC, DC, AC/DC networks up to AC max. 250 V or DC max. 300 V
  • With connection facility of an external coupling device:RL 5898 for voltages up to AC 400 V / DC 500 VRP 5898 for voltages up to AC 690 V / DC 1000 VRR 5898 for voltages up to AC 1000 V / DC 1500 V
Read more
DOLD RN 5897/320 – Insulation monitor

DOLD RN 5897/320 – Insulation monitor

52.5 mm

Insulation monitor

  • Suitable for DC charging stations for electric vehicles acc. to IEC/EN 61851-23:2014/AC:2016-06
  • Insulation monitoring according to IEC/EN 61557-8
  • Connection of an external coupling device RL 5898 for voltages up to AC 400 V / DC 500 V or RP 5898 for voltages up to AC 690 V / DC 1000 V
  • Extended operating temperature range of – 40 … + 70 °C
  • Very fast reaction time ≤ 1 s
Read more
DOLD RN 5897/321 – Insulation monitor

DOLD RN 5897/321 – Insulation monitor

52.5 mm

Insulation monitor

  • Suitable for DC charging stations for electric vehicles acc. to IEC/EN 61851-23:2014/AC:2016-06
  • Insulation monitoring according to IEC/EN 61557-8
  • Universal application in non-earthed AC-, DC-, AC/DC networks up to AC max. 250 V resp. DC max. 300 V
  • Connection of an external coupling device RL 5898 for voltages up to AC 400 V / DC 500 V or RP 5898 for voltages up to AC 690 V / DC 1000 V possible
  • Extended operating temperature range of – 40 … + 70 °C
Read more
DOLD RN 9075 – Fuse Monitor

DOLD RN 9075 – Fuse Monitor

52.5 mm

Fuse Monitor

  • Increasing the availability of plants by early detection of blown fuses, that may cause damage if undetected
  • Fast detection of blown fuses also with disconnected load availability of your plant on request
  • Reliable detection of blown fuses inspite of:- asymmetric mains- harmonic content
Read more