NB8LE-63M Residual Current Operated Circuit Breaker with over-current protection (Electronic)

NB8LE-63M Residual Current Operated Circuit Breaker with over-current protection (Electronic)

NB8LE-63M Residual Current Operated Circuit Breaker with over-current protection (Electronic)

NB8LE-63M Residual Current Operated Circuit Breaker with over-current protection (Electronic)

The CHINT NB8LE-63M RCBO integrates residual current and over-current protection in one compact unit, providing comprehensive safety for modern electrical systems. Designed for residential, commercial, and industrial applications, it effectively protects against earth leakage, overload, and short circuits. The NB8LE-63M features electronic detection, high breaking capacity, and quick disconnection for user safety. Built to IEC/EN 61009-1, it ensures precise protection performance, easy DIN-rail installation, and reliable operation across various voltage and load conditions.

Product Information

Function: Combined protection against overload, short circuit, and earth leakage
Standard Compliance: IEC/EN 61009-1
Poles: 1P+N, 2P, 3P+N, 4P
Rated Current (In): 6 A, 10 A, 16 A, 20 A, 25 A, 32 A, 40 A, 50 A, 63 A
Rated Voltage (Ue):
- 1P+N / 2P: 230/240 V~
- 3P+N / 4P: 400/415 V~
Rated Frequency: 50/60 Hz
Rated Breaking Capacity (Icn): 10 kA
Rated Residual Operating Current (IΔn): 30 mA, 100 mA, 300 mA
Tripping Characteristics: B, C, D curves
Type of Residual Current: Type AC and Type A (for sinusoidal and pulsating DC currents)
Insulation Voltage (Ui): 500 V
Rated Impulse Withstand Voltage (Uimp): 4 kV
Dielectric Test Voltage: 2.5 kV for 1 minute
Mechanical Life: ≥ 20,000 operations
Electrical Life: ≥ 10,000 operations
Operating Temperature: –5 °C to +40 °C (average ≤ 35 °C)
Storage Temperature: –25 °C to +70 °C
Mounting Type: DIN-rail 35 mm
Connection Capacity: 1–25 mm² (rigid conductor)
Tightening Torque: 2.5 N·m
Degree of Protection: IP20
Auxiliary Accessories: Compatible with auxiliary contact, shunt release, and under-voltage release modules
Installation Position: Vertical (standard)
Dimensions (1P+N):
- Width: 36 mm
- Height: 80 mm
- Depth: 76 mm

Name

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Release time

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NB8LE-63M-RCBO-Catalog.pdf

9.45MB

2025-12-15

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2110-NB8LE-63M-RCBO-Manual.pdf

524.58KB

2024-11-13

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2107-NB8LE-63M-RCBO-CE RoHS Declaration Certificate.pdf

464.25KB

2024-11-13

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2011-NB8LE-63M-RCBO-CB Certificate.pdf

1.01MB

2024-11-13

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FAQs

What is the function of the NB8LE-63M RCBO?

It provides integrated protection against overloads, short circuits, and residual current faults (earth leakage), ensuring both circuit and personal safety.

In what type of applications can it be used?

The NB8LE-63M is suitable for residential buildings, offices, and industrial control systems, especially where reliable leakage protection and selective tripping are needed.

What is the difference between Type AC and Type A residual current protection?

Type AC detects sinusoidal AC leakage currents.

Type A detects both sinusoidal AC and pulsating DC leakage currents, suitable for electronic loads and inverter-based equipment.

What are the available current ratings and breaking capacities?

The device offers rated currents from 6 A to 63 A with a 10 kA breaking capacity, meeting high-demand installation requirements.

Can the NB8LE-63M be combined with accessories?

Yes. It supports auxiliary contacts, shunt releases, and under-voltage releases, allowing integration with automation and monitoring systems.