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ABB S203-B3NA MCB – 3P+N – B Curve – 3A – 6kA
ABB S203-B3NA miniature circuit breaker featuring a 3P+N configuration, 3 A rated current, Type B tripping characteristic and 6 kA breaking capacity for electrical distribution and circuit protection applications.
£91.72
Why Choose the ABB S203-B3NA Miniature Circuit Breaker?
The ABB S203-B3NA (Part Number 2CDS253103R0035) is a compact and reliable 3P+N miniature circuit breaker (MCB) from the ABB System pro M compact S200 range. Designed for residential, commercial and industrial electrical installations, it provides dependable protection against overloads and short circuits.
This ABB miniature circuit breaker features both a delayed thermal tripping mechanism for overload protection and an electromechanical tripping mechanism for short circuit protection. Its current limiting design helps improve system safety by reducing fault energy during short circuit conditions.
With a 3 A rated current, Type B tripping characteristic, 3P+N configuration and 6 kA breaking capacity, the S203-B3NA is suitable for three-phase circuits with low inrush currents, including lighting, control panels and general distribution applications.
Key Advantages
- High quality ABB System pro M compact S200 miniature circuit breaker.
- 3P+N configuration for three-phase circuits with neutral switching.
- Type B tripping curve suitable for circuits with low inrush current.
- 3 A rated current for smaller electrical loads and control circuits.
- 6 kA breaking capacity for reliable fault protection.
- DIN rail mounting for quick installation in distribution boards and panels.
Key Features
- ABB S200 Series miniature circuit breaker.
- Model: S203-B3NA.
- Manufacturer Part Number: 2CDS253103R0035.
- Rated current: 3 A.
- Type B tripping characteristic.
- 3P+N pole configuration.
- 6 kA rated breaking capacity.
- Current limiting protection for safer fault interruption.
Reliable Protection for Electrical Distribution Systems
The ABB S203-B3NA protects electrical circuits by disconnecting the supply when overload or short circuit conditions occur. The thermal trip responds to sustained overloads, while the magnetic trip reacts quickly to short circuit faults.
Type B miniature circuit breakers are commonly selected for circuits with relatively low starting currents. This makes the S203-B3NA suitable for lighting circuits, small control loads, distribution boards and electrical panels where predictable, stable protection is required.
Typical Applications
- Commercial electrical distribution boards.
- Residential three-phase distribution systems.
- Industrial control panels.
- Lighting and low inrush current circuits.
- Building services installations.
- OEM electrical equipment and panel building.
Technical Specifications
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| Phase | Three Phase | |
|---|---|---|
| Current | 3 A | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S200 | |
| Model | S203-B3NA | |
| Part Number | 2CDS253103R0035 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 3 A | |
| Tripping characteristic | Type B | |
| Pole configuration | 3P+N | |
| Rated operational voltage | 400 V AC | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 6 kA | |
| Mounting type | DIN rail | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL1077 | |
| Application | Residential, commercial and industrial circuit protection |
Frequently Asked Questions
What is the ABB S203-B3NA used for?
It is used to protect three-phase electrical circuits against overloads and short circuits in residential, commercial and industrial installations.
What is the current rating of this circuit breaker?
The ABB S203-B3NA has a 3 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 S203-B3NA typically installed?
It is designed for DIN rail mounting inside distribution boards, switchgear assemblies and electrical control panels.
Trusted by Electrical Professionals Worldwide
ABB System pro M compact miniature circuit breakers are trusted by contractors, panel builders and engineers worldwide for reliable circuit protection, consistent performance and dependable installation quality.
