ABB S203P-D8NA miniature circuit breaker from the System pro M compact S200P range featuring a 3+N pole configuration, D curve tripping characteristic, 8 A rated current and 25 kA breaking capacity for industrial circuit protection.
The ABB S203P-D8NA is a premium miniature circuit breaker (MCB) from the ABB System pro M compact S200P series, engineered to provide dependable overload and short-circuit protection for commercial, industrial and OEM electrical installations. Featuring a D curve tripping characteristic and an 8 A rated current, it is ideal for protecting circuits supplying equipment with high inrush currents such as motors, transformers and industrial machinery.
The S200P range incorporates advanced current-limiting technology with independent thermal and electromagnetic tripping mechanisms. The thermal element provides reliable overload protection, while the magnetic trip reacts rapidly to short-circuit faults, helping minimise fault energy and protect valuable electrical equipment.
With a 3+N pole configuration, 400 V AC rated voltage and a high 25 kA short-circuit breaking capacity, the ABB S203P-D8NA delivers robust protection for demanding electrical systems. Its compact DIN rail mounted design makes installation straightforward in distribution boards and industrial control panels.
The ABB S203P-D8NA automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, protecting wiring, switchgear and connected equipment. Its D curve characteristic is specifically intended for applications where temporary high starting currents would cause nuisance tripping with standard B or C curve circuit breakers.
The ABB S200P range is widely specified by panel builders, machine manufacturers and electrical contractors thanks to its excellent reliability, high fault withstand capability and compliance with recognised international standards.
| Current | 8 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200P |
| Model | S203P-D8NA |
| Product ID | 2CDS283103R0081 |
| Product type | Miniature circuit breaker |
| Rated current | 8 A |
| Release characteristic | D curve |
| Number of poles | 3+N |
| Number of protected poles | 3 |
| Rated operational voltage | 400 V AC |
| Rated insulation voltage | 440 V |
| Rated frequency | 50 / 60 Hz |
| Rated short-circuit breaking capacity | 25 kA |
| Current limiting class | 3 |
| Protection rating | IP20 |
| Pollution degree | 3 |
| Overvoltage category | III |
| Mounting type | DIN rail |
| Width | 4 modular spacings |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm |
| Weight | approx. 0.56 kg |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077, CSA 22.2 No. 235 |
The ABB S203P-D8NA protects three-phase plus neutral electrical circuits against overloads and short circuits, particularly where high inrush current loads are present.
This miniature circuit breaker has a rated current of 8 A.
D curve MCBs are designed for circuits with high inrush currents, making them suitable for motors, transformers and other inductive equipment.
The S203P-D8NA features a 3+N pole configuration with protection on three poles and a switched neutral.
It is designed for installation on standard DIN rail inside electrical distribution boards and industrial control panels.
ABB System pro M compact S200P miniature circuit breakers are trusted by electrical engineers, OEM machine builders and panel manufacturers for reliable protection of modern industrial and commercial electrical systems.
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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...