NXL-63 Residual Current Operated Circuit Breaker without over-current protection (Magnetic) Datasheet & Manual

NXL-63 Residual Current Operated Circuit Breaker without over-current protection (Magnetic)

The CHINT NXL-63 Residual Current Operated Circuit Breaker (RCCB) provides essential protection against electric shock and earth-leakage faults in low-voltage installations. Designed without over-current protection, it ensures high sensitivity to leakage currents while maintaining operational reliability. Rated up to 63 A and 100 mA–500 mA residual sensitivity, the NXL-63 safeguards personnel and equipment in residential, commercial, and industrial systems. It complies with IEC/EN 61008-1 standards and offers stable performance with a mechanical endurance of 10,000 cycles.

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FAQs

What is the main function of the NXL-63 RCCB?

It detects residual (earth-leakage) currents and disconnects the circuit to prevent electric shock or fire hazards, providing crucial protection without incorporating over-current protection.

Why is it called “without over-current protection”?

Unlike RCBOs, the NXL-63 only detects leakage current and does not respond to overloads or short circuits, ensuring pure residual current protection for systems already equipped with upstream MCBs or MCCBs.

What tripping types are available?

The NXL-63 is an AC-type RCCB, suitable for detecting alternating residual currents, ideal for standard residential and commercial installations.

What are its endurance and environmental capabilities?

It offers a mechanical life of 10,000 cycles and operates reliably between −5 °C and +40 °C with up to 90 % relative humidity at 20 °C.

Where is the NXL-63 best used?

It is ideal for residential, commercial, and small industrial systems, particularly in sub-distribution boards or as a supplementary leakage protection device alongside MCBs.

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NXL-63 Residual Current Operated Circuit Breaker without over-current protection (Magnetic)

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