Description

Undervoltage Trip (UVT)
UVT is installed in internal part of circuit breaker, and they have the function
of remote tripping by controlling the voltage of each terminal of coil.
In case circuit voltage is less than the reference value, the circuit breaker will not
trip or close (ON). If circuit voltage falls less than 35 % of Rated voltage (Un), UVT
initiates a trip automatically to prevent damage to the load.
Opening Conditions
˙Operating characteristics is guaranteed based on IEC 60947-2 standard criteria.
˙Trip condition: U ≤ 0.35 x Un
˙No Trip condition: U ≥ 0.7 x Un
˙In U = 0.35 – 0.7 x Un interval, circuit breaker can be tripped but, does not
warrant the operation.
Closing Conditions
˙For the circuit breakers installed with UVT when voltage is not applied to the
UVT, the circuit breakers is possible OFF/RESET but can not be ON (Closing).
˙Voltage must be applied at UVT for closing (ON).
˙Closing condition: U ≥ 0.85 x Un

Voltage 100 to 120 VAC
applicable to:
HGM30-250
HGE30-250