Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
ABB S203M-Z0.5NA MCB – S200M – 3P+N – Z – 0.5A
ABB S203M-Z0.5NA miniature circuit breaker featuring a 3P+N configuration, 0.5 A rated current, Type Z tripping characteristic and 10 kA breaking capacity for sensitive electronic, control and industrial circuit protection applications.
£101.25
Why Choose the ABB S203M-Z0.5NA Miniature Circuit Breaker?
The ABB S203M-Z0.5NA (Part Number 2CDS273103R0158) is a high-performance 3P+N miniature circuit breaker (MCB) from the trusted ABB System pro M compact S200M range. Designed for sensitive electrical protection applications, it provides reliable 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 0.5 A rated current, Type Z tripping characteristic, 3P+N configuration and 10 kA breaking capacity, the S203M-Z0.5NA is ideal for protecting highly sensitive circuits, electronic devices, control systems and equipment where very fast disconnection is required.
Key Advantages
- High quality ABB System pro M compact S200M miniature circuit breaker.
- 3P+N configuration for three-phase systems with switched neutral.
- Type Z tripping curve for highly sensitive circuit protection.
- 0.5 A rated current for low-current electronic and control 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-Z0.5NA.
- Manufacturer Part Number: 2CDS273103R0158.
- Rated current: 0.5 A.
- Type Z tripping characteristic.
- 3P+N pole configuration.
- 10 kA rated breaking capacity.
- Compatible with ABB System pro M compact accessories.
Reliable Protection for Sensitive Electrical Circuits
The ABB S203M-Z0.5NA 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 rapid interruption under short circuit fault conditions.
Type Z miniature circuit breakers are designed for sensitive circuits where fast tripping is required. This makes the S203M-Z0.5NA suitable for electronics, control systems, measuring equipment and other applications where low fault currents must be interrupted quickly.
Typical Applications
- Electronic control circuits.
- Industrial automation panels.
- Measurement and instrumentation circuits.
- Sensitive equipment protection.
- Machine building and OEM control systems.
- Commercial and industrial distribution systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Phase | Three Phase | |
|---|---|---|
| Current | 0.5 A | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S200M | |
| Model | S203M-Z0.5NA | |
| Part Number | 2CDS273103R0158 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 0.5 A | |
| Tripping characteristic | Type Z | |
| 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 | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203M-Z0.5NA used for?
It is used to protect sensitive three-phase electrical circuits against overloads and short circuits, particularly where fast disconnection is required.
What is the current rating of this circuit breaker?
The ABB S203M-Z0.5NA has a 0.5 A rated current.
What does Type Z tripping characteristic mean?
Type Z MCBs are designed for highly sensitive circuits and provide fast tripping at lower fault current levels than standard curves.
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-Z0.5NA 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.
