Single Phase Induction Electric Motor Starter & Protection Unit UBZ-115 is a microprocessor unit. UBZ-115 provides protection to single-phase induction electric motors with power up to 2 kW (25А). The UBZ-115 unit is designed to provide permanent control of mains voltage parameters and current effective value, which is consumed by the 230V/50Hz motor. In the UBZ-115 provides an external input for remote start or stop the motor, and feature “soft start” the motor up to 5 seconds.

UBZ-115 provides protection in the following situations:

 when the mains voltage is of poor quality (over & under voltage);

 mechanical overloads of the motor (over current);

 when motor torque is lost (“dry stroke”);

 delayed start or rotor jamming;

 thermal overload (thermal model of the motor). For each separate type of fault, the unit allows to enable or disable an automatic reset (AR) of the motor.

Main technical specifications: 

Operating conditions:

The unit is designed for operation in the following conditions:

– ambient temperature is from minus 25 to +55 °С;

– storage temperature is from minus 45 to +70 °С;

– atmospheric pressure is from 84 to 106.7 kPa;

– relative air humidity (at 35 °С) is 30…90%.