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Monitoring Relays There are 78 products.
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PWB01 3-Phase Load Guard Monitoring Relay
DWB01 and PWB01 are precise TRMS power factor monitoring relays for 3- phase balanced systems. They can be used for monitoring the actual load of asynchronous motors and other symmetrical loads, where the power factor is almost proportional to the load. The relay measures the power factor (cos ϕ), that is the ratio between the active and the apparent...
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DWB02 3-Phase Active Power Monitoring Relay
DWB02 and PWB02 are precise TRMS active power monitoring relays for 3- phase balanced systems. They can be used for monitoring the actual load of asynchronous motors and other symmetrical loads, as well as the power consumption by of system. Start/stop input allows to use a manual switch to start and stop the system, without the need of an auxiliary...
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PWB03 3-Phase Active Power Direction...
DWB03 and PWB03 are precise TRMS active power monitoring relays for 3-phase balanced systems. They can be used for monitoring the actual load of asynchronous motors and other symmetrical loads, as well as to see if the power flows in the correct direction. Start/stop input allows to use a manual switch to start and stop the system, without the need of...
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DEA71 Earth Leakage Monitoring Relay
The DEA71 is a modular residual current relay which, in conjunction with the MCB and the CT, provides protection against possible risks arising from insulation or grounding faults, by interrupting the mains on faulty loads or lines. The setpoint of the leakage current is factory set to 30mA or 300mA according to model and it is not adjustable. The...
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DEB71 Earth Leakage Monitoring Relay
The DEB71 is an adjustable modular residual current relay which, in conjunction with the MCB and the CT, provides protection against possible risks arising from insulation or grounding faults, by interrupting the mains on faulty loads or lines. The setpoint of the leakage current is adjustable. The device is equipped with two changeover relay outputs....
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A74 3-Phase Current Transformer
3-phase current transformer measures on all three phases. Output voltage proportional to measured amplitude of the rms-value of the normal phase current. GET A QUOTE
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A82 True RMS AC Current Transformer
True RMS AC current metering transformer for 25, 50, 100, 250 or 500 AAC. Output current in accordance with IEC 60381-1 (A 82-10, A 82-20) or output voltage in accordance with IEC 60381-2 (A 82-30). A 82-10 and A 82-20 can be used with relays DIB01, PIB01, DIC01 or PIC01. A 82-30 can be used with DUB01, PUB01, DUB71, DUC01 or PUC01. All units can be...
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CTG Core Balance Transformer
CTG is a family of "core balance transformers". These devices detect the difference in the current flow on the lines running through the coil. They work on either single phase or three-phase mains. When the vectorial sum of the current flowing to the load and the one flowing on the NEUTRAL cable (if present) is different from "0" (zero), a current on...
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E83-20-50 AC Current Transformer
Small AC current metering transformer with 7 knob selectable ranges. Output from the transformer is 4-20 mADC in accordance with IEC 60381-1. Can be used with relays DIB01, PIB01, DIC01 or PIC01 or directly connected to a PLC. Power supply ON is indicated by a green LED. 12 mm hole for isolated current carrying wire makes it suitable for most...
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MI 1-Phase AC Current Transformer
AC current transformers for 5, 20, 100, 500 AAC. Output voltage (0.4 - 4 Vp) is proportion al to measured current. GET A QUOTE
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MP 3-Phase Current Transformer
3-phase current transformers for 5, 20, 100 or 500 AAC. Output voltage (0.4 - 4 Vp) is proportional to measured current. GET A QUOTE
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DTA01 Motor Temperature Monitoring Relay
DTA01, DTA02, PTA01 and PTA02 are precise thermistor monitoring relays. They can be used to monitor the temperature of the coils of a motor with built-in PTC’s. The alarm status of the relay can be reset by either an external contact or an internal button (DTA02, PTA02). The test button allows the simulation of the fault condition (DTA02, PTA02)....
