M54133A

DESCRIPTION 

The UTC M54133A is a semiconductor integrated circuit 

developed for use in high-speed earth leakage breakers 

incorporating functions to protect against voltage surges and 

inverter noise.

FEATURES 

* Improvement of ability against unwanted tripping by 

lightning-surge and lightning impulse. 

Two times counting system adopted. 

* Improvement of ability against unwanted tripping by 

inverter-noise. 

Built-in operational amplifier (of low current dissipation) for active

low-pass filter. 

Improved high-frequency, high harmonic superposition 

performance 

* Internal time delay function 

* An external capacitor is used to set the delay time. 

* High input sensitivity: VT=11.5mVrms Typ. 

* Low-current dissipation (at RIREF=180kΩ) 

In stand-by condition: IS=610μA Typ. 

* High stabilities design 

Adopt the circuits that is not affected by fluctuations of supply 

voltage/ambient temperature. 

规格书M54133A