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2CDS213103R0405 ABB SH203-B40NA Miniature Circuit Breaker 3P+N Type B 40 A 6 kA
ABB SH203-B40NA is a 3P+N Type B miniature circuit breaker rated at 40 A with a 6 kA short-circuit breaking capacity for three-phase and neutral electrical circuits.
£148.19
Why Choose the ABB SH203-B40NA Miniature Circuit Breaker?
The ABB SH203-B40NA is a compact and reliable 3P+N miniature circuit breaker (MCB) designed to provide overload and short-circuit protection for three-phase electrical circuits with a neutral conductor. As part of the ABB SH200 MCB series, it provides dependable circuit protection in a modular DIN-rail format for residential, commercial and light industrial electrical distribution systems.
This miniature circuit breaker features a Type B tripping characteristic, making it suitable for circuits with relatively low inrush currents, including many resistive and general-purpose electrical loads. Its 3P+N configuration combines protection of the three phase conductors with neutral switching, providing coordinated disconnection for suitable three-phase and neutral circuits.
With a rated current of 40 A and a rated short-circuit breaking capacity of 6 kA, the SH203-B40NA provides dependable protection for electrical distribution circuits while maintaining the compact modular design associated with ABB circuit protection devices.
Key Advantages
- Compact 3P+N miniature circuit breaker for three-phase and neutral circuits.
- 40 A rated current for suitable electrical distribution loads.
- Type B tripping characteristic suitable for circuits with relatively low inrush currents.
- 6 kA short-circuit breaking capacity for dependable fault protection.
- Neutral switching provides coordinated disconnection of the neutral conductor with the phase poles.
- DIN-rail format simplifies installation in compatible distribution boards and control panels.
Key Features
- ABB SH200 miniature circuit breaker series.
- 3P+N configuration.
- 40 A rated current.
- Type B trip characteristic.
- 6 kA rated short-circuit breaking capacity.
- Thermal-magnetic overload and short-circuit protection for the phase conductors.
- Switched neutral pole for three-phase and neutral circuits.
- Designed for standard DIN-rail mounting.
Reliable Three-Phase and Neutral Circuit Protection
Miniature circuit breakers such as the ABB SH203-B40NA automatically disconnect protected conductors when excessive current is caused by an overload or short circuit. This helps protect electrical wiring and connected equipment while allowing the circuit breaker to be reset after the fault has been identified and corrected.
The Type B characteristic is commonly used for circuits where normal operating loads have relatively low starting currents. The SH203-B40NA combines three protected phase poles with a switched neutral, making it suitable for three-phase and neutral distribution circuits requiring coordinated isolation of the phase and neutral conductors.
Typical Applications
- Three-phase and neutral electrical distribution circuits.
- Residential and commercial distribution boards.
- General-purpose circuits with relatively low inrush currents.
- Commercial and light industrial electrical installations.
- Electrical control and distribution panels.
- DIN-rail modular protection assemblies.
Technical Specifications
| Series | SH200 |
|---|---|
| ABB order code | 2CDS213103R0405 |
| Product type | Miniature circuit breaker (MCB) |
| Configuration | 3P+N |
| Protected poles | 3 |
| Neutral | Switched neutral |
| Rated current | 40 A |
| Trip characteristic | Type B |
| Rated short-circuit breaking capacity | 6 kA |
| Protection function | Overload and short-circuit protection |
| Mounting type | DIN rail |
Frequently Asked Questions
What is the ABB SH203-B40NA used for?
The SH203-B40NA is used to provide overload and short-circuit protection for the phase conductors of suitable three-phase and neutral electrical circuits while also providing coordinated neutral switching.
What is the rated current of the ABB SH203-B40NA?
The ABB SH203-B40NA has a rated current of 40 A.
What does the 3P+N configuration mean?
The 3P+N configuration provides three protected phase poles together with a switched neutral pole, allowing coordinated disconnection of the phase and neutral conductors.
What does the Type B characteristic mean?
The Type B tripping characteristic is intended for circuits with relatively low inrush currents, making it suitable for many resistive and general-purpose electrical loads.
What is the breaking capacity of the SH203-B40NA?
The SH203-B40NA has a rated short-circuit breaking capacity of 6 kA.
Trusted ABB Circuit Protection
ABB SH200 miniature circuit breakers provide compact and dependable protection for electrical distribution systems, combining thermal-magnetic circuit protection with a modular DIN-rail design for straightforward integration into distribution boards and control panels.
