CQM6L Leakage-Integrated Molded Case Breaker

Core Features and Design

The CQM6L is engineered for comprehensive protection by incorporating a residual current module into the standard molded case framework, covering frame-rated currents (Inm) from 125A to 1250A in models CQM6L-125 to CQM6L-1250. The integrated leakage detection offers adjustable sensitivity (Ig: 30-1000mA, with delay 0-1s) to identify ground faults and prevent electric shocks, alongside thermal-magnetic trips for overloads and short-circuits. Compact design aids space-efficient installation, with breaking capacities from C-type (15/8kA) to H-type (75/75kA), insulation voltage up to 800V, and impulse withstand of 8kV. Testing validates superior endurance: 6000 cycles for lower frames, 3000 for mid-frames, with mechanical operations up to 3000 ON and 7000 OFF, suitable for environments prone to moisture or grounding issues. Pole configurations (3 or 4) and N-pole options ensure adaptability for distribution or motor applications.

Accessory Flexibility and Customization

Enhance safety with leakage-compatible accessories, including residual current indicators, alarm switches (208/308), shunt releases (210/310), auxiliary switches (220/320), undervoltage releases (230/330), and combinations for multi-function control. Motorized operation (P) with D1-D4 voltages and installation modes (front/rear/inserted) support remote management in wet areas. Function codes and adjustable leakage parameters allow customization for specific risk levels, integrating with building management systems for proactive fault detection.

Applications and Compliance

Perfect for high-risk zones such as kitchens, bathrooms, swimming pools, or outdoor installations in residential and commercial buildings, the CQM6L provides rapid ground fault isolation to mitigate shock hazards while protecting against overcurrents. It handles wide current ranges with category A selectivity for coordinated systems. Strict compliance with IEC/EN 60947 series and GB/T 14048 standards, plus certifications, assures safety in global contexts. Derivative products like leakage alarms support compliance with building codes (e.g., GB 50303). This series minimizes risks in humid or personnel-heavy environments, offering durable integration and reduced maintenance through advanced leakage features and proven performance.

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