NXBL-40Y Residual Current Operated Circuit Breaker with over-current protection (Magnetic)

NXBL-40Y Residual Current Operated Circuit Breaker with over-current protection (Magnetic)

NXBL-40Y Residual Current Operated Circuit Breaker with over-current protection (Magnetic)

NXBL-40Y Residual Current Operated Circuit Breaker with over-current protection (Magnetic)

NXBL-40Y Residual Current Operated Circuit Breaker with over-current protection (Magnetic)

NXBL-40Y Residual Current Operated Circuit Breaker with over-current protection (Magnetic)

The NXBL-40Y RCBO combines residual current and over-current protection in one device, ensuring comprehensive safety for personnel, equipment, and wiring. It detects earth faults, overloads, and short circuits, automatically disconnecting the circuit to prevent electric shocks and fires. With a rated breaking capacity of 4.5kA, sensitivity from 30mA to 300mA, and tripping curves (B or C) for diverse applications, the NXBL-40Y offers high reliability, compact design, and CE-certified performance for residential, commercial, and industrial power systems.

Product Information

Standard: IEC/EN 61009-1
Function: Combined protection against residual current, overload, and short-circuit faults
Rated Current (In): 6A, 10A, 13A, 16A, 20A, 25A, 32A, 40A
Poles: 1P+N (N right)
Rated Voltage (Ue): 220/230/240V~
Residual Sensitivity (IΔn): 30mA, 100mA, 300mA
Tripping Class:
- AC type: For sinusoidal AC residual currents
- A type: For sinusoidal and pulsating DC residual currents
Thermo-Magnetic Release Characteristic: B, C curves
Rated Short-Circuit Capacity (Icn): 4.5kA
Rated Frequency: 50/60Hz
Rated Making/Breaking Capacity (Im): 3,000A
Dielectric Test Voltage: 2kV for 1 min
Rated Impulse Withstand Voltage (Uimp): 4kV
Insulation Voltage (Ui): 500V
Mechanical Life: 20,000 operations
Electrical Life: 4,000 operations
Protection Degree: IP20
Mounting Type: DIN rail EN 60715 (35mm) via fast clip device
Terminal Type: Cable/U-type busbar/Pin-type busbar
Terminal Capacity:
- Cable: 25 mm² (AWG 18–3)
- Busbar: 10 mm² (AWG 18–8)
Tightening Torque: 2 Nm
Operating Temperature: −25°C to +70°C
Storage Temperature: −40°C to +70°C
Temperature Derating Reference: 30°C
CE Certified

Name

Size

Release time

Operate

NXBL-40Y-RCBO-Catalog.pdf

464.59KB

2025-12-04

Download

Name

Size

Release time

Operate

2407-NXBL-40Y-RCBO-Manual EU.pdf

624.58KB

2024-11-13

Download

2407-NXBL-40Y-RCBO-Manual EN.pdf

251.46KB

2024-11-13

Download

Name

Size

Release time

Operate

2405-NXBL-40Y-RCBO-CB certificate.pdf

113.51KB

2024-11-13

Download

2405-NXBL-40Y-RCBO-CE certificate.pdf

2.25MB

2024-11-13

Download

Name

Size

Release time

Operate

NXBL-40Y-RCBO-Drawing-1PN-3D.stp

6.88MB

2025-03-25

Download

NXBL-40Y-RCBO-Drawing-1PN-2D.dwg

51.08KB

2024-11-13

Download

Need Support From Us?

Blog

Blog

Find expert perspectives on the trends and technologies driving your business.

View Now

Download Center

Download Center

Download new and previously released documents including product document, solutions, cases, coporate report.

View Now

Contact Us

Reach out to us to receive more information, technical support, assistance with complaints and more.

Collapsed

Expand

FAQs

What is the main function of the NXBL-40Y RCBO?

It combines residual current protection and over-current protection, ensuring comprehensive electrical safety by disconnecting the circuit during earth leakage, overload, or short-circuit faults.

What types of electrical systems is it suitable for?

The NXBL-40Y is ideal for residential, commercial, and industrial TN and IT systems, protecting both people and equipment from electrical faults.

What’s the difference between the B and C tripping curves?

B curve (3–5 In): Protects circuits with low inrush currents and long cables.

C curve (5–10 In): Suited for circuits with resistive and inductive loads, such as motors and lighting.

What sensitivity options are available?

It offers 30mA, 100mA, and 300mA sensitivities—covering personal protection, equipment safety, and fire prevention.

How is the NXBL-40Y installed?

It mounts on a 35mm DIN rail (EN 60715) with quick-release clips, supporting top and bottom connections for convenient installation in compact panels.