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ABB S203M-B16NA MCB – S200M – 3P+N – B – 16A
ABB S203M-B16NA miniature circuit breaker featuring a 3P+N configuration, 16 A rated current, Type B tripping characteristic and 10 kA breaking capacity for residential, commercial and industrial circuit protection applications.
£91.47
Why Choose the ABB S203M-B16NA Miniature Circuit Breaker?
The ABB S203M-B16NA (Part Number 2CDS273103R0165) is a high-performance 3P+N miniature circuit breaker (MCB) from the trusted ABB System pro M compact S200M range. Designed for residential, commercial and industrial electrical installations, it provides dependable protection against overloads and short circuits.
This ABB miniature circuit breaker is current limiting and uses two separate tripping mechanisms: a delayed thermal trip for overload protection and an electromechanical trip for short circuit protection. Its compact DIN rail mounted format makes it suitable for distribution boards, switchgear assemblies and industrial control panels.
With a 16 A rated current, Type B tripping characteristic, 3P+N configuration and 10 kA breaking capacity, the S203M-B16NA is ideal for protecting three-phase circuits with low inrush currents, including lighting, control circuits and general electrical distribution applications.
Key Advantages
- High quality ABB System pro M compact S200M miniature circuit breaker.
- 3P+N configuration for three-phase systems with switched neutral.
- Type B tripping curve suitable for low inrush current applications.
- 16 A rated current for lighting, control and distribution circuits.
- 10 kA breaking capacity provides dependable fault interruption.
- Current limiting construction helps reduce stress during short circuit conditions.
Key Features
- ABB System pro M compact S200M series.
- Model: S203M-B16NA.
- Manufacturer Part Number: 2CDS273103R0165.
- Rated current: 16 A.
- Type B tripping characteristic.
- 3P+N pole configuration.
- 10 kA rated breaking capacity.
- Compatible with ABB System pro M compact accessories.
Reliable Protection for Low Inrush Current Circuits
The ABB S203M-B16NA protects electrical circuits by disconnecting the supply when overload or short circuit conditions occur. The delayed thermal mechanism responds to sustained overloads, while the electromechanical trip provides fast interruption under short circuit fault conditions.
Type B miniature circuit breakers are designed for circuits with low inrush currents. This makes the S203M-B16NA suitable for lighting circuits, control wiring, small loads and general electrical distribution where fast and predictable protection is required.
Typical Applications
- Lighting circuits and building services.
- Industrial control panels.
- Commercial distribution boards.
- Three-phase electrical distribution systems.
- Low inrush current equipment.
- OEM panels and machine control circuits.
Technical Specifications
Tick the specs you need, then view products that match.
| Phase | Three Phase | |
|---|---|---|
| Current | 16 A | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S200M | |
| Model | S203M-B16NA | |
| Part Number | 2CDS273103R0165 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 16 A | |
| Tripping characteristic | Type B | |
| Pole configuration | 3P+N | |
| Rated operational voltage | 400 V AC | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 10 kA | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm | |
| Weight | approx. 0.45 kg | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 | |
| EAN | 4016779549776 | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203M-B16NA used for?
It is used to protect three-phase electrical circuits against overloads and short circuits, particularly where low inrush currents are expected.
What is the current rating of this circuit breaker?
The ABB S203M-B16NA has a 16 A rated current.
What does Type B tripping characteristic mean?
Type B MCBs are designed for circuits with low inrush currents, such as lighting, control circuits and general distribution applications.
How many poles does this circuit breaker have?
This model has a 3P+N configuration, providing three protected poles with neutral switching.
Where is the S203M-B16NA typically installed?
It is designed for DIN rail mounting inside distribution boards, switchgear assemblies and industrial control panels.
Trusted by Electrical Professionals Worldwide
ABB System pro M compact miniature circuit breakers are trusted by contractors, panel builders and industrial engineers worldwide for dependable protection, reliable operation and consistent installation quality.
