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NB1-63G Miniature Circuit Breaker

NB1-63G C63 4P-MCB

NB1-63G C63 1P-MCB

NB1-63G C63 2P-MCB

NB1-63G C63 3P-MCB

NB1-63G C63 1P-MCB-Front

NB1-63G C63 2P-MCB-Front

NB1-63G C63 3P-MCB-Front

NB1-63G C63 4P-MCB-Front

NB1-63G C63-MCB-Side

NB1-63G C63 4P-MCB

NB1-63G C63 1P-MCB

NB1-63G C63 2P-MCB

NB1-63G C63 3P-MCB

NB1-63G C63 1P-MCB-Front

NB1-63G C63 2P-MCB-Front

NB1-63G C63 3P-MCB-Front

NB1-63G C63 4P-MCB-Front

NB1-63G C63-MCB-Side

NB1-63G Miniature Circuit Breaker

The NB1-63G miniature circuit breaker is designed for the protection of electrical circuits against overloads and short-circuits. It can also be used for switching and isolation purposes. Suitable for domestic, commercial, and industrial installations, it ensures reliable circuit protection with high breaking capacity. The breaker features compact design, quick response, and compliance with IEC/EN 60898-1 standards, making it ideal for low-voltage distribution systems operating at 230/400V.

Product Information

Compliant Standards and Certifications

IEC/EN 60898-1

Main Specifications

Rated Current (In): 1A to 63A
Poles: 1P, 2P, 3P, 4P
Rated Voltage (Ue): 230/400V
Rated Frequency: 50/60Hz
Insulation Voltage (Ui): 500V
Rated Breaking Capacity: 6000A
Impulse Withstand Voltage (Uimp): 4kV
Dielectric Strength: 2kV/1 min
Pollution Degree: 2
Release characteristic: B, C
Energy limiting class: 3
Max power loss per pole: 2W/3.5W/5W

Name

Size

Release time

Operate

NB1-63G-MCB-Catalog.pdf

553.72KB

2025-12-10

Download

Name

Size

Release time

Operate

2004-NB1-63G-MCB-Manual.pdf

891.5KB

2024-09-22

Download

Name

Size

Release time

Operate

2201-NB1-63G-MCB-REACH Declaration Certificate.pdf

335.67KB

2024-09-22

Download

2201-NB1-63G-MCB-CE Declaration Certificate.pdf

897.7KB

2024-09-22

Download

1611-NB1-63G-MCB-VDE Certificate.pdf

668.66KB

2024-09-22

Download

Name

Size

Release time

Operate

NB1-63G 1P-MCB-Drawing.stp

5.66MB

2024-09-22

Download

NB1-63G 2P-MCB-Drawing.stp

12.3MB

2024-09-22

Download

NB1-63G 1P-MCB-Drawing.dwg

102.42KB

2024-09-22

Download

NB1-63G 3P-MCB-Drawing.stp

9.83MB

2024-09-22

Download

NB1-63G 4P-MCB-Drawing.stp

12.91MB

2024-09-22

Download

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FAQs

What is the primary function of the NB1-63G Miniature Circuit Breaker?

It protects electrical circuits from overload and short-circuit faults, ensuring safe operation of connected equipment in residential, commercial, and light industrial installations.

What tripping characteristics does it provide?

The NB1-63G is available in Type B and C curves, allowing protection for resistive and inductive loads respectively. Type B is ideal for general lighting or heating circuits, while Type C suits inductive loads like motors.

What is its breaking capacity?

It offers a 6 kA breaking capacity, suitable for standard low-voltage distribution systems, ensuring circuit interruption under high fault conditions.

How easy is it to install and maintain?

With a DIN-rail clip design, top/bottom feed compatibility, and busbar connection support, the NB1-63G ensures quick installation and efficient wiring for multi-device configurations.

What makes the NB1-63G safe to operate?

It includes a trip-free mechanism (prevents holding during faults), color-coded contact indicator, and IP20 protection, ensuring operational safety and clear visual status.