TVW Series - Voltage Monitor

Littelfuse Voltage Monitoring Relays
The TVW Series provides protection for motors and other sensitive loads. Continuously measures the voltage of each of the three phases using a microcontroller circuit design that senses under and overvoltage, voltage unbalance, phase loss, and phase reversal. Protection is provided even when regenerated voltages are present. Includes a trip delay to prevent nuisance tripping and a restart delay to prevent short cycling after a momentary power outage.


Operation
Upon application of line voltage, the restart delay begins. The output is de-energized during restart delay. Under normal conditions, the output energizes after the restart delay. Undervoltage, overvoltage, and voltage unbalance must be sensed for the complete trip delay period before the output de-energizes. The restart delay begins as soon as the output de-energizes. If the restart delay is completed when a fault is corrected, the output energizes immediately. The output will not energize if a fault is sensed as the input voltage is applied. If the voltage selector is set between two voltage marks (i.e. between 220 and 230V), the LED will flash red rapidly. The TVW provides fault protection at the lower of the two line voltages (i.e. 220V).
Reset: Reset is automatic upon correction of a fault.

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Termination TypeMounting MethodDimensionsWeight (lbs/g)SamplesCompare
TVW5103S5S208 to 240VAC0.25 in. (6.35mm) male quick connect terminalsSuface mount with one #8 (M5 x 0.8) screw2.00 x 2.00 x 1.25 in. (50.8 x 50.8 x 31.8mm)≅2.8oz (79g)
TVW575S1M208 to 240VAC0.25 in. (6.35mm) male quick connect terminalsSuface mount with one #8 (M5 x 0.8) screw2.00 x 2.00 x 1.25 in. (50.8 x 50.8 x 31.8mm)≅2.8oz (79g)
TVW6510S0.4S208 220 230 and 240VAC0.25 in. (6.35mm) male quick connect terminalsSuface mount with one #8 (M5 x 0.8) screw2.00 x 2.00 x 1.25 in. (50.8 x 50.8 x 31.8mm)≅2.8oz (79g)Order
TVW8510S0.4S380 400 and 415VAC0.25 in. (6.35mm) male quick connect terminalsSuface mount with one #8 (M5 x 0.8) screw2.00 x 2.00 x 1.25 in. (50.8 x 50.8 x 31.8mm)≅2.8oz (79g)
TVW9510S0.4S430 440 460 and 480VAC0.25 in. (6.35mm) male quick connect terminalsSuface mount with one #8 (M5 x 0.8) screw2.00 x 2.00 x 1.25 in. (50.8 x 50.8 x 31.8mm)≅2.8oz (79g)