MCB Undervoltage Release Device
This MCB undervoltage release trips the circuit breaker when the actual voltage is between 70%Ue-35%Ue. It prevents the circuit breaker from closing when the actual voltage is below 35%Ue.
Technical Specifications
Overview
Reliable Undervoltage Protection
This undervoltage release device is designed to provide essential protection for electrical circuits by monitoring voltage levels. It automatically trips the connected circuit breaker when voltage drops below critical thresholds, preventing potential equipment damage from undervoltage conditions. The unit is engineered for seamless integration with compatible miniature circuit breakers, ensuring reliable performance and enhanced electrical safety for industrial and commercial applications.
Technical Specifications
Operating Thresholds
70 %Ue
Trip Range Start
35 %Ue
Trip Range End
85 %Ue
Close Range Start
110 %Ue
Close Range End
Operating Limits
256 V
Max Voltage
165 V
Min Voltage
- Rated Voltages
- 230V400V
Installation & Compatibility
Installation Methods
- Screw fixation (DAB7-OF, DAB7-FB, DAB7-QY)
- Tape fixation (DAB7-FL)
- Guide rail mounting
Compatible Accessories
- Auxiliary contact
- Auxiliary alarm contact
- Shunt trip
- Compatible Series
- DAB7 (63 frame) circuit breakers
