ABB S203P-C40NA miniature circuit breaker from the S200P System pro M compact range, 3+NP configuration, C curve, 40 A rated current, designed for overload and short-circuit protection in electrical distribution systems.
The ABB S203P-C40NA is a high-performance miniature circuit breaker (MCB) from the ABB System pro M compact S200P series, designed to provide reliable protection against overloads and short circuits in residential, commercial and industrial electrical installations. With its C-curve tripping characteristic and 40 A rated current, it is suitable for circuits with moderate inrush currents such as lighting, control panels, small motors and distribution boards.
This ABB MCB features a 3+NP pole configuration, allowing three protected poles with a neutral pole arrangement for three-phase plus neutral applications. The S200P range is engineered for dependable performance, offering current-limiting protection and compliance with key international standards for electrical safety and circuit protection.
With a compact DIN rail mounting format and robust construction, the S203P-C40NA is ideal for professional electrical panels where high breaking capacity, reliable switching and long service life are required. It is also recognised under the manufacturer part number 2CDS283103R0404.
Miniature circuit breakers such as the ABB S203P-C40NA help protect electrical circuits by disconnecting the supply during overload or short-circuit conditions. The thermal tripping mechanism responds to sustained overloads, while the electromagnetic tripping mechanism reacts quickly to short-circuit faults.
The C-curve characteristic makes this MCB suitable for circuits where higher starting currents may be present, including lighting banks, small motors, control transformers and general distribution circuits. Its high-performance S200P construction provides dependable operation in demanding electrical installations.
| Current | 40 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S200P System pro M Compact |
| Model | S203P-C40NA |
| Manufacturer part number | 2CDS283103R0404 |
| Product type | Miniature circuit breaker |
| Rated current | 40 A |
| Tripping characteristic | C curve |
| Number of poles | 3+NP |
| Number of protected poles | 3 |
| Breaking capacity | up to 25 kA at 230 / 400 V AC |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077, CSA 22.2 No. 235 |
| Mounting type | DIN rail mounting |
| Protection rating | IP20 |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm |
| Weight | approx. 0.56 kg |
| EAN | 4016779591164 |
The ABB S203P-C40NA is used to protect electrical circuits against overloads and short circuits in three-phase plus neutral distribution systems.
The S203P-C40NA has a rated current of 40 A.
A C-curve MCB is designed for circuits with moderate inrush currents, making it suitable for applications such as lighting, control panels, small motors and mixed loads.
The S203P-C40NA has a 3+NP pole configuration, providing three protected poles plus a neutral pole arrangement.
This MCB is typically installed on a DIN rail inside electrical distribution boards, consumer units, control panels and industrial enclosures.
ABB S200P miniature circuit breakers are widely used by electricians, panel builders and industrial engineers for dependable circuit protection, robust construction and professional electrical distribution performance.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...