Why Choose the ABB S203-C8 Miniature Circuit Breaker?
The ABB S203-C8 is a premium three-pole miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200 series. Designed to provide dependable overload and short circuit protection, it is ideal for commercial, industrial and OEM electrical installations where safety, reliability and long service life are essential.
Featuring a C tripping characteristic, the S203-C8 is intended for circuits with moderate inrush currents, making it suitable for power distribution, lighting, HVAC equipment, control panels and general industrial machinery. Its combined thermal and magnetic trip mechanisms ensure rapid fault protection while minimising unnecessary tripping during normal operation.
With a 8 A rated current, three-pole configuration and a 6 kA short circuit breaking capacity, this DIN rail mounted miniature circuit breaker delivers excellent protection, simple installation and compliance with internationally recognised electrical standards.
Key Advantages
Compact three-pole miniature circuit breaker for commercial and industrial applications.
C curve tripping characteristic for moderate inrush current loads.
8 A rated current for reliable circuit protection.
6 kA breaking capacity for dependable fault interruption.
Thermal and magnetic trip mechanisms provide accurate overload and short circuit protection.
DIN rail mounting for quick installation inside switchboards and control panels.
Key Features
ABB System pro M Compact S200 series.
Three-pole (3P) configuration.
8 A rated current.
C tripping characteristic.
6 kA rated short circuit breaking capacity.
Suitable for 50 / 60 Hz AC systems.
Failsafe bi-directional screw terminals for secure wiring.
Compatible with ABB S200 auxiliary contacts and accessories.
Reliable Circuit Protection for Modern Electrical Systems
The ABB S203-C8 combines delayed thermal overload protection with instantaneous magnetic short circuit protection to safeguard electrical installations and connected equipment. This proven design delivers dependable performance across a wide range of commercial and industrial applications.
Its C characteristic makes it particularly suitable for general purpose power circuits where moderate starting currents occur. The compact design allows straightforward installation within distribution boards, switchgear assemblies and machine control panels.
Typical Applications
Commercial electrical distribution.
Industrial control panels.
Building services installations.
Automation and OEM machinery.
HVAC systems.
General purpose power distribution circuits.
Technical Specifications
Current
8 A
Phase
Single Phase
Manufacturer
ABB
Series
System pro M Compact S200
Model
S203-C8
Product type
Miniature Circuit Breaker (MCB)
Rated current
8 A
Number of poles
3
Tripping characteristic
C
Rated operational voltage
400 V AC
Maximum operational voltage
440 V AC
Rated frequency
50 / 60 Hz
Breaking capacity
6 kA
Protection rating
IP20
Mounting type
DIN rail
Terminal type
Failsafe bi-directional screw terminals
Dimensions (H × W × D)
88 × 52.5 × 69 mm
Weight
approx. 0.336 kg
HS Code
85362010
Country of Manufacture
Germany
Frequently Asked Questions
What is the ABB S203-C8 used for?
The ABB S203-C8 protects three-phase electrical circuits against overloads and short circuits in commercial, industrial and OEM applications.
What does the C tripping characteristic mean?
A C curve circuit breaker is designed for circuits with moderate inrush currents, making it suitable for most industrial and commercial electrical installations.
How many poles does the ABB S203-C8 have?
This model features a three-pole (3P) configuration for protecting three-phase electrical systems.
What is the breaking capacity of this MCB?
The ABB S203-C8 has a rated short circuit breaking capacity of 6 kA.
How is the ABB S203-C8 installed?
The circuit breaker mounts directly onto a standard DIN rail inside electrical distribution boards and industrial control panels.
Trusted by Electrical Professionals Worldwide
ABB System pro M Compact miniature circuit breakers are trusted by electricians, panel builders and industrial engineers for dependable protection, high quality construction and reliable long-term performance.
Current
8 A
Phase
Single Phase
Manufacturer
ABB
Series
System pro M Compact S200
Model
S203-C8
Product type
Miniature Circuit Breaker (MCB)
Rated current
8 A
Number of poles
3
Tripping characteristic
C
Rated operational voltage
400 V AC
Maximum operational voltage
440 V AC
Rated frequency
50 / 60 Hz
Breaking capacity
6 kA
Protection rating
IP20
Mounting type
DIN rail
Terminal type
Failsafe bi-directional screw terminals
Dimensions (H × W × D)
88 × 52.5 × 69 mm
Weight
approx. 0.336 kg
HS Code
85362010
Country of Manufacture
Germany
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
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Stock lines ready to ship
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Same day dispatches
3500 +
Customers supported
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● frequently asked questions
Common questions about our products and support
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
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We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
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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...