460 Series - 3-Phase Voltage Monitor

Littelfuse Voltage Monitoring Relays

The 460 is a 3-phase voltage monitor that protects 190-480VAC or 475-600V, 50/60Hz motors regardless of size. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically senses line voltage.

This unique microcontroller-based voltage and phase-sensing device constantly monitors the 3-phase voltages to detect harmful power line conditions such as low, high, and unbalanced voltage, loss of any phase, and phase reversal. When a harmful condition is detected, the 460 output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level for a specified amount of time (restart delay). The trip and restart delays prevent nuisance tripping due to rapidly fluctuating power line conditions.

All 460 models feature adjustable 1-30 second trip delay, 1-500 second restart delay, 2-8% voltage unbalance trip point, and one form C contact except where noted.

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Output
Form
Termination TypeMounting MethodDimensionsWeight (lbs/g)Compare
460190 to 480VACForm 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)0.7 lb. (11.2 oz. 317.5 g)
460-14190 to 480VAC1 Form A and 1 Form BTorque: 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)0.7 lb. (11.2 oz. 317.5 g)
460-15190 to 480VAC2 Form ATorque: 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)0.7 lb. (11.2 oz. 317.5 g)
460-400HZ190 to 480VACForm 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)0.7 lb. (11.2 oz. 317.5 g)
460-575475 to 600VACForm 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)0.7 lb. (11.2 oz. 317.5 g)
460-575-14475 to 600VAC1 Form A and 1 Form BTorque: 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)0.7 lb. (11.2 oz. 317.5 g)
460-B190 to 480VACForm 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)0.7 lb. (11.2 oz. 317.5 g)
460-L190 to 480VACForm 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)0.7 lb. (11.2 oz. 317.5 g)
460-MR190 to 480VACForm 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)0.7 lb. (11.2 oz. 317.5 g)
460-OEM190 to 480VACForm 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)0.7 lb. (11.2 oz. 317.5 g)
460-VBM190 to 480VACForm 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)0.7 lb. (11.2 oz. 317.5 g)
460L-OEM190 to 480VACForm 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)0.7 lb. (11.2 oz. 317.5 g)