Abb Residual Current Circuit Breaker
NXB series miniature circuit breaker complies with standard GB/T 10963.1. It is suitable for AC 50Hz circuits with rated voltage up to 230V or 400V and rated current up to 63A. It provides overload protection, short-circuit protection and isolation function, and can be used for infrequent switching of circuits under normal operating conditions.
Description
NXB series miniature circuit breaker complies with standard GB/T 10963.1. It is suitable for AC 50Hz circuits with rated voltage up to 230V or 400V and rated current up to 63A. It provides overload protection, short-circuit protection and isolation function, and can be used for infrequent switching of circuits under normal operating conditions.
Equipped with red-green status indicator and visual observation window to clearly display contact position. Reliable performance allows you to tell power on/off status at a glance.
Matchable accessories include auxiliary contact AX-X1, alarm contact AL-X1, shunt release SHT-X1, overvoltage release OVT-X1, undervoltage release UVT-X1, over & undervoltage release OUVT-X1.
Protective equipment for building lighting and power distribution systems.
Product specifications
| Product Name | Voltage (V) | Wiring Mode | Arc Extinguishing Type | PZ30 Module Width (1 module = 18 mm) |
| 1P MCB | 230/400 | Connect only one phase wire | Magnetic blow-out type | 1 module |
| 2P MCB | 400 | Connect phase wire + neutral wire | 2 module | |
| 3P MCB | 400 | Three-phase power supply | 3 module | |
| 4P MCB | 400 | Three-phase power supply | 4 module |
|
Poles |
1P, 2P, 3P, 4P |
|
Rated Current |
1A, 3A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A |
|
Rated Operating Voltage |
220V / 380V |
|
Instantaneous Trip Types |
Type C, Type D |
|
Type C |
For distribution circuit protection |
|
Type D |
For motor circuit protection |
Application
Terminal power distribution, household and enterprise use.
FAQ
Q1. What is a European-type separable connector (elbow)?
It is a medium-voltage plug-in connector used to connect cables to switchgear, transformers or motors. Our European-type connectors (e.g. QJ type) are rated for voltages such as 8.7/15kV and can be used for 630A applications.
Q2. What cable cross-section does your elbow connector support?
For example, our QJ-10/630 type connector supports copper cables of 120mm² (and can cover a range such as 120–240mm²). Confirm your cable size for the correct kit.
Q3. Do your accessories include all necessary installation materials?
Yes. Each kit includes the main insulation parts, sealing and filler compounds, phase tapes, cleaning materials, and an installation work instruction, so you have everything needed on site.
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