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ABB S203M-Z40 MCB – S200M – 3P – Z – 40A
ABB S203M-Z40 three-pole 40 A miniature circuit breaker with Z tripping characteristic and 10 kA breaking capacity for sensitive industrial, commercial and panel building applications.
£89.83
Why Choose the ABB S203M-Z40 Miniature Circuit Breaker?
The ABB S203M-Z40 is a high performance three-pole miniature circuit breaker (MCB) designed to provide dependable overload and short-circuit protection in industrial, commercial and panel building applications. As part of the ABB S200M System pro M compact series, it delivers reliable circuit protection in a compact DIN rail mounted format.
This MCB features a Z tripping characteristic, making it suitable for highly sensitive electrical and electronic circuits where rapid magnetic tripping is required. It is ideal for control panels, PLC systems, instrumentation, electronics and applications with low inrush currents where fast disconnection is important.
With a 40 A rated current, three-pole configuration and 10 kA short-circuit breaking capacity, the ABB S203M-Z40 provides reliable protection for three-phase distribution systems, automation equipment and sensitive industrial control applications.
Key Advantages
- Compact three-pole miniature circuit breaker for professional installations.
- 40 A rated current for dependable circuit protection.
- Z tripping characteristic for sensitive electronic circuits.
- 10 kA short-circuit breaking capacity for demanding applications.
- Current limiting design helps reduce stress during short-circuit events.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB S200M miniature circuit breaker series.
- 40 A rated current.
- Three-pole (3P) configuration.
- Z characteristic thermal and magnetic tripping curve.
- 10 kA breaking capacity at 230 / 400 V AC.
- DIN rail mounting for fast panel installation.
- Delayed thermal tripping mechanism for overload protection.
- Electromechanical tripping mechanism for short-circuit protection.
Sensitive Circuit Protection for Three-Phase Systems
Miniature circuit breakers such as the ABB S203M-Z40 automatically disconnect the electrical supply when overload or short-circuit conditions occur. This helps protect cables, switchgear and connected equipment from damage caused by excessive current.
The Z curve provides rapid magnetic tripping, making this breaker especially suitable for protecting sensitive electronics, control circuits and instrumentation. This helps ensure fast fault response while maintaining reliable operation in appropriate low-inrush applications.
Typical Applications
- PLC and automation control panels.
- Electronic equipment protection.
- Instrumentation and measurement circuits.
- Three-phase industrial distribution boards.
- Commercial electrical installations.
- Panel building and OEM electrical equipment.
Technical Specifications
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| Phase | Three Phase | |
|---|---|---|
| Current | 40 A | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | S200M | |
| Model | S203M-Z40 | |
| Product ID | 2CDS273001R0558 | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 40 A | |
| Number of poles | 3P | |
| Tripping characteristic | Z | |
| Rated operational voltage | 230 / 400 V AC | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Rated frequency | 50 / 60 Hz | |
| Rated short-circuit breaking capacity | 10 kA | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 | |
| Mounting type | DIN rail | |
| Protection rating | IP20 | |
| Dimensions (H × W × D) | 88 × 52.5 × 69 mm | |
| Weight | approx. 0.375 kg | |
| EAN | 4016779601344 | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203M-Z40 used for?
The ABB S203M-Z40 is used to protect three-phase electrical circuits against overloads and short circuits, especially where sensitive electronic equipment requires rapid fault protection.
What does the Z tripping characteristic mean?
The Z characteristic provides fast magnetic tripping and is designed for protecting sensitive electronic devices and control circuits with low inrush currents.
What is the current rating of the S203M-Z40?
The ABB S203M-Z40 has a 40 A rated current.
How many poles does this circuit breaker have?
This model is a three-pole (3P) miniature circuit breaker for three-phase electrical systems.
What breaking capacity does the S203M-Z40 provide?
The ABB S203M-Z40 provides a 10 kA short-circuit breaking capacity at 230 / 400 V AC.
Trusted by Electrical Professionals Worldwide
ABB S200M miniature circuit breakers are trusted by contractors, panel builders and industrial engineers for reliable protection, compact installation and consistent performance in demanding electrical systems.
