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Measuring relays for main monitoring

Protect individual system parts against being damaged

DOLD offers you a very wide portfolio of relays for network monitoring. The devices monitor electrical variables such as voltage, phase outage/asymmetry, neutral conductor usage, frequency as well as insulation errors. Typical uses are device and system protections, the supply of safety lighting devices, et cetera. They distinguish themselves with benefits such as space-saving thanks to their compact size, simple functionality, flexible use, high efficiency and higher operating security as well as fire and accident safety.

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AK9840
Asymmetry Relay AK 9840
  • 1- / 3-phase: 3
  • Measuring range max.: 3 AC 690 V
  • Operate delay: Yes
  • Standard measuring range: 3 AC 400 V
  • Width: 70 mm
Datsheet
BA9040
Asymmetry Relay BA 9040
  • 1- / 3-phase: 3
  • Measuring range max.: 3 AC 690 V
  • Operate delay: Yes
  • Standard measuring range: 3 AC 400 V
  • Width: 45 mm
Datsheet
BA9041
Phase-sequence relay BA 9041
  • 1- / 3-phase: 3
  • Measuring range max.: 500 V
  • Standard measuring range: 3 AC 400 V
  • Width: 45 mm
Datsheet
BA9837
Frequency Relay BA 9837
  • 1- / 3-phase: 1
  • Measuring range max.: 600 Hz
  • Operate delay: Yes
  • Standard measuring range: 30 - 90 Hz
  • Width: 45 mm
Datsheet
IK9143
Frequency Relay IK 9143
  • 1- / 3-phase: 1
  • Measuring range max.: 50/60 Hz
  • Operate delay: Yes
  • Standard measuring range: 50/60 Hz
  • Width: 17,5 mm
Datsheet
IK9168
Phase indicator IK 9168
  • 1- / 3-phase: 3
  • Measuring range max.: 400 V
  • Standard measuring range: 3/N AC 400/230 V
  • Width: 17,5 mm
Datsheet
IK9169
Phase monitor IK 9169
  • 1- / 3-phase: 3
  • Measuring range max.: 415 V
  • Width: 17,5 mm
Datsheet
IK9178
Phase Sequence Indicator IK 9178
  • 1- / 3-phase: 3
  • Measuring range max.: 3 AC 400 V
  • Standard measuring range: 3 AC 400 V
  • Width: 17,5 mm
Datsheet
IK9179
Phase Sequence Monitor (Phase Sequence Relay) IK 9179
  • 1- / 3-phase: 3
  • Measuring range max.: 3 AC 400 V
  • Standard measuring range: 3 AC 400 V
  • Width: 17,5 mm
Datsheet
IL5201
Phase Failure Relay, With Time Delay IL 5201/20006
  • 1- / 3-phase: 1 , 3
  • Width: 35 mm
Datsheet
IL9059
Phase Sequence Module IL 9059
  • 1- / 3-phase: 3
  • Measuring range max.: 690 V
  • Standard measuring range: AC 380 - 690 V
  • Width: 35 mm
Datsheet
IL9069
Neutral Monitor IL 9069
  • 1- / 3-phase: 3
  • Measuring range max.: 415 V
  • Operate delay: Yes
  • Standard measuring range: 3/N AC 400/230 V
  • Width: 35 mm
Datsheet
IL9075
Fuse Monitor IL 9075
  • 1- / 3-phase: 3
  • Measuring range max.: 440 V
  • Standard measuring range: 3 AC 380 - 415 V
  • Width: 35 mm
Datsheet
IL9176
Undervoltage Relay, 3-Phase With Test Key IL 9176
  • 1- / 3-phase: 3
  • Measuring range max.: 400 V
  • Standard measuring range: 3/N AC 400/230 V
  • Width: 35 mm
Datsheet
IL9837
Frequency Relay IL 9837
  • 1- / 3-phase: 1
  • Measuring range max.: 300 Hz
  • Operate delay: Yes
  • Standard measuring range: 5 - 200 Hz
  • Width: 35 mm
Datsheet
IP9075
Fuse Monitor IP 9075
  • 1- / 3-phase: 3
  • Measuring range max.: 690 V
  • Standard measuring range: 3 AC 380 - 415 V
  • Width: 70 mm
Datsheet
MH9143
Mains Frequency Monitor MH 9143
  • 1- / 3-phase: 1
  • Measuring range max.: 50/60 Hz
  • Operate delay: Yes
  • Standard measuring range: 50/60 Hz
  • Width: 45 mm
Datsheet
MH9352_001
Phase monitor MH 9352/001
  • 1- / 3-phase: 3
  • Width: 45 mm
Datsheet
MH9352_003
Phase Monitor MH 9352/003
  • 1- / 3-phase: 3
  • Measuring range max.: AC 440 V
  • Width: 45 mm
Datsheet
MH9837
Frequency Relay MH 9837
  • 1- / 3-phase: 1
  • Measuring range max.: 600 Hz
  • Standard measuring range: 1,5 - 600 Hz
  • Width: 45 mm
Datsheet
MH9837_5_0
Frequency Relay MH 9837/5_0
  • 1- / 3-phase: 1
  • Measuring range max.: 600 Hz
  • Standard measuring range: 1,5 - 600 Hz
  • Width: 45 mm
Datsheet
MK9040N
Asymmetry Relay MK 9040N
  • 1- / 3-phase: 3
  • Measuring range max.: 3 AC 400 V
  • Operate delay: Yes
  • Standard measuring range: 3 AC 400 V
  • Width: 22,5 mm
Datsheet
MK9059
Phase sequence relay MK 9059
  • 1- / 3-phase: 3
  • Measuring range max.: 750 V
  • Standard measuring range: 3 AC 150 - 750 V
  • Width: 22,5 mm
Datsheet
MK9143N
Mains Frequency Monitor MK 9143N
  • 1- / 3-phase: 1
  • Measuring range max.: 50/60 Hz
  • Operate delay: Yes
  • Standard measuring range: 50/60 Hz
  • Width: 22,5 mm
Datsheet
MK9837N
Frequency Relay MK 9837N
  • 1- / 3-phase: 1
  • Measuring range max.: 600 Hz
  • Standard measuring range: 1,5 - 600 Hz
  • Width: 22,5 mm
Datsheet
MK9837N_500
Frequency Relay MK 9837N/5_0
  • 1- / 3-phase: 1
  • Measuring range max.: 600 Hz
  • Standard measuring range: 1,5 - 600 Hz
  • Width: 22,5 mm
Datsheet
OA9059
Phase Sequence Module OA 9059
  • 1- / 3-phase: 3
  • Measuring range max.: 690 V
  • Standard measuring range: AC 380 - 690 V
  • Width: 62 mm
Datsheet
RK9169
Phase monitor RK 9169
  • 1- / 3-phase: 3
  • Measuring range max.: 415 V
  • Width: 17,5 mm
Datsheet
RK9179
Phase Sequence Monitor (Phase Sequence Relay) RK 9179
  • 1- / 3-phase: 3
  • Measuring range max.: 3 AC 400 V
  • Standard measuring range: 3 AC 400 V
  • Width: 17,5 mm
Datsheet
RK9872
Phase monitor RK 9872
  • 1- / 3-phase: 3
  • Measuring range max.: 400 V
  • Standard measuring range: 3/N AC 400/230 V
  • Width: 17,5 mm
Datsheet
RK 9872/802
Phase monitor RK 9872/802
  • 1- / 3-phase: 3
  • Measuring range max.: 400 V
  • Standard measuring range: 3/N AC 400/230 V
  • Width: 17,5 mm
Datsheet
RK 9872/803
Phase monitor RK 9872/803
  • Measuring range max.: 400 V
  • Standard measuring range: 3/N AC 400/230 V
  • Width: 17,5 mm
Datsheet
RL9075
Fuse Monitor RL 9075
  • 1- / 3-phase: 1 , 3
  • Approvals: UL
  • Measuring range max.: 3 AC 110 V
  • Standard measuring range: 3 AC 110 V / 64 V
  • Width: 35 mm
Datsheet
RN9075
Fuse Monitor RN 9075
  • 1- / 3-phase: 1 , 3
  • Approvals: UL
  • Measuring range max.: 3 AC 400 V
  • Standard measuring range: 3/N AC 400/230 V
  • Width: 52,5 mm
Datsheet
SK9143
Frequency Relay SK 9143
  • 1- / 3-phase: 1
  • Measuring range max.: 50/60 Hz
  • Operate delay: Yes
  • Standard measuring range: 50/60 Hz
  • Width: 17,5 mm
Datsheet
SK9169
Phase monitor SK 9169
  • 1- / 3-phase: 3
  • Measuring range max.: 415 V
  • Width: 17,5 mm
Datsheet
SK9179
Phase Sequence Monitor (Phase Sequence Relay) SK 9179
  • 1- / 3-phase: 3
  • Measuring range max.: 3 AC 400 V
  • Standard measuring range: 3 AC 400 V
  • Width: 17,5 mm
Datsheet
SL9059
Phase-sequence relay SL 9059
  • 1- / 3-phase: 3
  • Measuring range max.: 690 V
  • Standard measuring range: AC 380 - 690 V
  • Width: 35 mm
Datsheet
SL9069
Neutral Monitor SL 9069
  • 1- / 3-phase: 3
  • Measuring range max.: 415 V
  • Operate delay: Yes
  • Standard measuring range: 3/N AC 400/230 V
  • Width: 35 mm
Datsheet
SL9075
Fuse Monitor SL 9075
  • 1- / 3-phase: 3
  • Measuring range max.: 440 V
  • Standard measuring range: 3 AC 380 - 415 V
  • Width: 35 mm
Datsheet
SL9837
Frequency Relay SL 9837
  • 1- / 3-phase: 1
  • Measuring range max.: 300 Hz
  • Operate delay: Yes
  • Standard measuring range: 5 - 200 Hz
  • Width: 35 mm
Datsheet
SP9075
Fuse Monitor SP 9075
  • 1- / 3-phase: 3
  • Measuring range max.: 690 V
  • Standard measuring range: 3 AC 380 - 415 V
  • Width: 70 mm
Datsheet
UG5124
Trip circuit monitor UG 5124
  • Width: 22,5 mm
Datsheet
UG9075_230-400V
Fuse monitor UG 9075
  • 1- / 3-phase: 3
  • Measuring range max.: 3 AC 400 V
  • Operate delay: Yes
  • Standard measuring range: 3 AC 110 - 400 V
  • Width: 22,5 mm
Datsheet
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