3 Phase Monitors from Time Mark

This line of 3-Phase Monitors all use a unique voltage and phase angle sensing circuit which allow the devices to monitor conditions that would be harmful to motors and other machinery. All will detect loss-of-phase, low or high voltage and reverse phase. Differences in the models are generally limited to the type of enclosure, output contact arrangements and the addition of restart or trip delays.

Click on the model number or the picture in the table below to view basic product information. For complete, printable product information, download the PDF. Adobe® Acrobat® Reader must be installed on your computer in order to open these files.

	Model	Description
	158	3-Phase Monitor Continuously monitors 3-phase power lines for abnormal conditions.
	200	3-Phase Voltage Unbalance Monitor Indicator lights on the monitor show when the voltage balance is within an acceptable range; when an unbalance exists; and when the relay is actually tripped.
	246	3-Phase Monitor This device features solid-state voltage and phase angle sensing circuits, which drive a SPDT electromechanical relay.
	252	3-Phase Monitor When properly adjusted, the Model 252 will detect phase loss on a loaded motor even when regenerated voltage is present.
	253	Reverse Phase Relay A solid-state sensing device designed for installation in equipment using 3-phase power.
	257	3-Phase Monitor When properly adjusted, the Model 257 monitor will detect phase loss on a loaded motor even when regenerated voltage is present.
	258	3-Phase Monitor This device consists of a solid-state voltage and phase-angle sensing circuit, driving an electromechanical relay.
	259	3-Phase Monitor Designed to protect individual 3-phase equipment and motors, or in conjunction with shunt trip breakers.
	263	3-Phase Monitor Continuously monitors 3-phase power systems for phase loss, low voltage and phase reversal.
	264	3-Phase Monitor Continuously monitors 3-phase Wye or Delta systems for abnormal conditions.
	265	3-Phase Monitor When properly adjusted, the Model 265 Monitor will detect phase loss on a loaded motor even when regenerated voltage is present.
	269	Over and Under 3-Phase Monitor Continuously monitors 3-phase lines for high voltage, low voltage, phase loss or phase reversal.
	2500	3-Phase Monitor This device features solid-state voltage and phase-angle sensing circuits, which drive a SPDT electromechanical output relay.
	2501	3-Phase Monitor This unit operates in fail-safe mode, and the contacts de-energize on a fault condition.
	2522	3-Phase Monitor This unit consists of a solid-state voltage and phase-angle sensing circuit, driving an electromechanical relay with DPDT contacts.
	2532	Reverse Phase Relay Designed to continuously monitor phase rotation of 3-phase lines.
	2581	3-Phase Monitor Designed to continuously monitor 3-phase power lines for phase loss, low voltage and phase reversal.
	2594	3-Phase Monitor Designed for use with applications which require high control voltage (up to 600VAC).
	2638	3-Phase Monitor Combines a 3-phase monitor with a line voltage and phase sequence indicator.
	2642	3-Phase Monitor Protects electrical equipment by sensing phase loss, low voltage and reverse phase conditions.
	2644	3-Phase Monitor Continuously monitors 3-phase Wye or Delta systems for abnormal conditions. The Model 2644 Monitor is not sensitive to line current, and can be used with any size motor or compressor.
	2652	3-Phase Monitor Designed to protect motors, pumps, HVAC equipment, air compressors, etc., by sensing phase loss, low voltage or phase reversal.

3 Phase Monitors from Time Mark
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