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2CDS273011R0204 ABB SH203M-C20 MCB 10kA 3P Type C 20A
ABB SH203M-C20 is a 20 A three-pole Type C miniature circuit breaker with 10 kA short-circuit breaking capacity for reliable overload and short-circuit protection in three-phase electrical distribution and control applications.
£67.34
Why Choose the ABB SH203M-C20 Miniature Circuit Breaker?
The ABB SH203M-C20 is a compact and reliable three-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits. As part of the ABB SH200M MCB series, it provides dependable thermal-magnetic protection for three-phase electrical distribution and control applications.
Featuring a 20 A rated current, Type C tripping characteristic and 10 kA short-circuit breaking capacity, the SH203M-C20 is well suited to circuits where moderate starting or inrush currents may occur. The Type C characteristic provides effective fault protection while accommodating the normal start-up behaviour of suitable electrical equipment.
With a 400 V AC rated operational voltage and three-pole configuration, the SH203M-C20 enables coordinated switching and protection across three phases. Its compact modular construction and standard DIN-rail mounting make it suitable for installation in electrical distribution boards, machinery panels and industrial control systems.
Key Advantages
- Reliable overload and short-circuit protection for three-phase electrical circuits.
- 20 A rated current suitable for distribution, equipment and control circuits.
- Type C tripping characteristic accommodates moderate starting and inrush currents.
- 10 kA short-circuit breaking capacity provides robust fault protection.
- Three-pole configuration provides coordinated switching and protection across three phases.
- Standard DIN-rail mounting simplifies installation in distribution boards and control panels.
Key Features
- ABB SH200M miniature circuit breaker series.
- 20 A rated current.
- Three poles (3P).
- Type C tripping characteristic.
- 10 kA short-circuit breaking capacity.
- 400 V AC rated operational voltage.
- 50 / 60 Hz rated frequency.
- 440 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- Thermal-magnetic protection against overload and short-circuit conditions.
- Compact three-module DIN-rail construction for electrical distribution equipment.
Reliable Three-Phase Circuit Protection
Miniature circuit breakers such as the ABB SH203M-C20 automatically disconnect a circuit when excessive current results from an overload or short circuit. Thermal operation responds to sustained overload conditions, while magnetic operation provides rapid disconnection when severe short-circuit currents occur.
The Type C characteristic makes the SH203M-C20 suitable for many circuits containing equipment that produces moderate inrush current during normal start-up. Combined with its three-pole construction, 20 A current rating and 10 kA breaking capacity, it provides dependable protection for suitably designed three-phase distribution and equipment circuits.
Typical Applications
- Three-phase electrical distribution boards.
- Commercial electrical distribution systems.
- Industrial electrical control panels.
- Machinery and automation electrical circuits.
- Three-phase circuits requiring coordinated overcurrent protection.
- Equipment circuits with moderate normal starting currents.
Technical Specifications
| Series | SH200M |
|---|---|
| ABB order code | 2CDS273011R0204 |
| Product type | Miniature circuit breaker (MCB) |
| Number of poles | 3 |
| Number of protected poles | 3 |
| Rated current | 20 A |
| Tripping characteristic | Type C |
| Rated short-circuit breaking capacity | 10 kA |
| Rated operational voltage | 400 V AC |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Rated frequency | 50 / 60 Hz |
| Standard | IEC/EN 60898-1 |
| Protection principle | Thermal-magnetic |
| Mounting type | DIN rail |
| Number of modules | 3 |
| Width | 52.5 mm |
Frequently Asked Questions
What is the ABB SH203M-C20 used for?
The ABB SH203M-C20 is a three-pole miniature circuit breaker used to protect electrical circuits against overloads and short circuits while providing coordinated switching and protection across three phases.
What is the rated current of the SH203M-C20?
The SH203M-C20 has a rated current of 20 A.
What does the Type C characteristic mean?
The Type C tripping characteristic is suitable for circuits where moderate starting or inrush currents can occur during normal operation, helping accommodate normal equipment start-up while maintaining effective fault protection.
What is the breaking capacity of the ABB SH203M-C20?
The SH203M-C20 has a 10 kA short-circuit breaking capacity.
How many poles does the SH203M-C20 have?
The SH203M-C20 is a three-pole (3P) miniature circuit breaker, enabling coordinated switching and protection across three phases.
Trusted ABB Circuit Protection
ABB SH200M miniature circuit breakers provide dependable thermal-magnetic protection in a compact DIN-rail format, helping protect electrical distribution and control circuits against overload and short-circuit conditions.
