Time Mark 257B-240VAC 3-Phase Monitor Relay
The Time Mark 257B-240VAC 3-Phase Monitor Relay from Thermal Devices, an authorized Time Mark distributor. Time Mark has a variety of 3-phase relays that can offer protection against phase loss, phase reversal, phase unbalance and under/over voltage. Phase-angle and voltage sensing circuits are used to detect phase loss even when regenerative loads cause little measurable voltage reduction between phases. All models feature automatic reset.
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