NXBLE-125G Residual Current Operated Circuit Breaker (RCBO)

NXBLE-125G Residual Current Operated Circuit Breaker (RCBO)

NXBLE-125G Residual Current Operated Circuit Breaker (RCBO)

NXBLE-125G Residual Current Operated Circuit Breaker (RCBO)

The NXBLE-125G Residual Current Operated Circuit Breaker (RCBO) combines overload, short-circuit, and residual current protection in one device for AC 230/400V 50Hz systems. Designed for residential, commercial, and industrial power distribution, it ensures safe isolation and automatic disconnection in fault conditions. Built to comply with IEC61009-1, this high-capacity RCBO offers a breaking capacity up to 10kA, excellent electrical endurance, and compact modular construction for easy DIN rail installation.

Product Information

Compliant Standards: IEC61009-1
Certifications: CE, RoHS
Functions: Overload protection, short-circuit protection, isolation, residual current operation
Rated Current (In): 63A, 80A, 100A (1P+N, 2P, 3P, 3P+N, 4P); 125A (1P+N, 2P)
Rated Residual Operating Current (IΔn): 0.03A, 0.05A, 0.075A, 0.1A, 0.3A
Leakage Protection Type: AC type
Rated Voltage (Ue):
- 230V AC for 1P+N, 2P
- 400V AC for 3P, 3P+N, 4P
Rated Frequency: 50Hz
Tripping Curve: B, C, D types
Number of Poles: 1P+N, 2P, 3P, 3P+N, 4P
Mechanical Life: 20,000 operations
Electrical Life: 6,000 cycles (In ≤ 100A), 4,000 cycles (In > 100A)
Rated Short-Circuit Breaking Capacity (Icn): 10,000A
Short-Circuit Breaking Capacity (Ics): 7,500A
Rated Impulse Withstand Voltage (Uimp): 4kV
Dielectric Test Voltage: 2000V (1 min, power frequency)
Operating Temperature Range: –35°C to +70°C
Storage Temperature Range: –35°C to +85°C
Applicable Altitude: ≤2000 m
Mounting Method: TH35-7.5 DIN rail
Pollution Degree: Class II
Protection Degree:
- IP20 (direct mounting)
- IP40 (when installed inside a distribution box)
Terminal Capacity: 16–50 mm²; tightening torque 3.5 N·m
Dimensions (mm):
- 1P+N: L = 54.0, H = 75.5
- 2P: L = 81.2, H = 78.5
- 3P: L = 108.0, H = 78.5
- 4P: L = 135.0, H = 78.5

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NXBLE-125G-RCBO-Catalog.pdf

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2025-12-05

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2004-NXBLE-125G-RCBO-Manual.pdf

370.12KB

2024-10-08

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2301-NXBLE-125G-RCBO-TISI Certificate.pdf

1.59MB

2024-10-08

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2206-NXBLE-125G-RCBO-EAC Certificate.pdf

609.64KB

2024-10-08

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1604-NXBLE-125G-RCBO-CB Certificate.jpg

1.03MB

2025-03-25

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NXBLE-125G-3P-N-RCBO-Drawing.stp

2025-03-25

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NXBLE-125G-2P-RCBO-Drawing.dwg

2025-03-25

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NXBLE-125G-3P-N-RCBO-Drawing.dwg

317.69KB

2025-03-25

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NXBLE-125G-4P-RCBO-Drawing.dwg

340.16KB

2025-03-25

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NXBLE-125G-4P-RCBO-Drawing.stp

2025-03-25

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NXBLE-125G-2P-RCBO-Drawing.stp

2025-03-25

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FAQs

What is the main function of the NXBLE-125G RCBO?

It combines residual current (earth leakage) protection with overload and short-circuit protection, ensuring comprehensive safety for low-voltage power systems.

What types of electrical systems can it be used in?

The NXBLE-125G is suitable for AC 230/400V networks, including residential, commercial, and industrial distribution systems.

What is the breaking capacity of this model?

It provides a rated short-circuit breaking capacity of 10kA, ensuring reliable protection under high fault currents.

What tripping characteristics does it support?

It is available in B, C, and D curves, making it adaptable for various load types — from resistive to highly inductive applications.

How long is its operational lifespan?

The NXBLE-125G offers 20,000 mechanical and up to 6,000 electrical operating cycles, guaranteeing long-term reliability and performance.