460-XXX-SP Series - Single-Phase Voltage Monitor

Littelfuse Voltage Monitoring Relays
The 460-100-SP is used on 95-120VAC, 50*/60Hz single-phase motors and the 190-240VAC, 50*/60Hz single-phase motors to protect them from damaging high and low voltage conditions. An adjustment knob allows the user to set a 1-500 second restart delay. The variable restart delay is also a power-up delay and can be utilized to stagger-start motors on the same system.

A unique microcontroller-based, voltage-sensing circuit constantly monitors the voltage to detect harmful power line conditions. When a harmful condition is detected, the relay’s output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level and a specified amount of time has elapsed (restart delay). The trip delay prevents nuisance tripping due to rapidly fluctuating power line conditions.

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Output
Form
Termination TypeMounting MethodDimensionsWeight (lbs/g)Compare
460-100-SP95 to 120VAC1 Form CTorque: 6in-lbs; Wire: Stranded or solid 12-20AWG one per terminal35mm DIN rail or Surface Mount (#6 or #8 screws)3.50 in H x 2.08 in W x 2.35 in D (88.9 x 52.9 x 59.7 mm)0.9 lb. (14.4 oz. 408.2 g)
460-200-SP190 to 240VAC1 Form CTorque: 6in-lbs; Wire: Stranded or solid 12-20AWG one per terminal35mm DIN rail or Surface Mount (#6 or #8 screws)3.50 in H x 2.08 in W x 2.35 in D (88.9 x 52.9 x 59.7 mm)0.9 lb. (14.4 oz. 408.2 g)