Introduction to MDU Breakers
These circuit breakers include a measuring display unit (MDU) for measuring, displaying, and sharing electric circuit information for improved energy savings in a space-saving design that reduces construction work.
The broad model lineup supports a variety of networks (CC-Link communication, MODBUS communication, electric energy pulse output), so they can be used in a wide range of applications, from managing energy-saving efforts to monitoring power distribution equipment.
Improved energy-saving
The load current, line voltage, power, electric energy, harmonic current, leakage current, and power factor passing through the circuit breaker are measured and displayed, allowing for detailed energy management for improved energy savings.
Main measurement and display elements
* Leakage current can be measured by measuring the leakage current of basic waveform components or by measuring leakage currents containing harmonics. Molded case circuit breakers (MCCBs) are not supported.
Space-Saving, Reduced-Construction Design
Clean and compact wiring helps simplify work!
Circuit breaker with built-in current and voltage transformers
Wiring for independently installed circuit breakers and measurement devices is eliminated, allowing for smaller distribution panels, shorter construction periods, and reduced construction costs.
Electric Circuit Monitoring for Accident Prevention and Equipment Maintenance
Automatic recording of event cause and current when the circuit breaker is tripped
Recorded information helps ensure events do not reoccur!
Energy-Saving Design
Host system integration
Support for various communication methods (CC-Link, MODBUS, etc.)
* MODBUS is a registered trademark of Schneider Electric USA Inc.
