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S203-C63 Miniature Circuit Breaker – 3P – C – 63 A
ABB S203C63 3-pole 63 A miniature circuit breaker with C curve tripping characteristic and 6 kA breaking capacity for overload and short-circuit protection.
£48.79
Why Choose the ABB S203C63 Miniature Circuit Breaker?
The ABB S203C63 is a premium 3-pole miniature circuit breaker (MCB) engineered to provide dependable protection against overloads and short circuits in residential, commercial and industrial electrical installations. As part of the trusted ABB System pro M Compact S200 series, it combines reliable thermal-magnetic protection with current-limiting technology and a compact DIN rail design for modern electrical distribution systems.
Featuring a C curve tripping characteristic, the S203C63 is ideal for circuits with moderate inrush currents, making it suitable for motors, compressors, pumps, HVAC equipment, transformers and general three-phase power distribution. Its thermal overload mechanism and electromagnetic short-circuit protection ensure rapid fault clearance whilst helping to protect cables and connected equipment.
With a rated current of 63 A, a 3-pole configuration and a 6 kA rated short-circuit breaking capacity, the ABB S203C63 is designed for three-phase systems operating at up to 400 V AC. Compatibility with ABB auxiliary accessories and its compact DIN rail format simplify installation and future expansion.
Key Advantages
- Reliable 3-pole miniature circuit breaker for overload and short-circuit protection.
- 63 A rated current for high-capacity commercial and industrial distribution.
- C curve tripping characteristic suitable for circuits with moderate inrush currents.
- 6 kA breaking capacity provides dependable fault protection.
- Current-limiting technology helps minimise fault energy.
- Compatible with ABB S200 auxiliary accessories.
- Compact DIN rail mounting for quick installation.
Key Features
- ABB System pro M Compact S200 series.
- Model S203-C63.
- 63 A rated current.
- 3-pole configuration.
- C trip characteristic.
- 230/400 V AC rated operational voltage.
- 6 kA rated short-circuit breaking capacity.
- Thermal and electromagnetic tripping mechanisms.
- Current-limiting operation.
- Bottom-mounted auxiliary contact compatibility.
- Clear red/green contact position indication.
- DIN rail mounting.
Reliable Protection for High-Capacity Three-Phase Systems
The ABB S203C63 automatically disconnects electrical circuits when overload or short-circuit conditions occur, helping protect wiring, switchgear and connected equipment from electrical damage. Its thermal-magnetic operating mechanism delivers dependable protection whilst reducing downtime and improving installation safety.
Its C curve characteristic makes the breaker particularly suitable for motors, compressors, pumps, HVAC equipment, industrial machinery and commercial distribution systems where moderate temporary starting currents are expected. The current-limiting design helps reduce thermal and mechanical stress during fault conditions.
Typical Applications
- Industrial distribution boards.
- Commercial electrical installations.
- Motor and pump circuits.
- HVAC systems.
- Industrial control panels.
- OEM machinery.
- Automation systems.
- Three-phase power distribution.
Technical Specifications
Tick the specs you need, then view products that match.
| Breaking Capacity | 6 kA | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | C curve | |
| HS Code | 85362010 | |
| Manufacturer | ABB | |
| Series | System pro M Compact S200 | |
| Model | S203-C63 | |
| Product code | 2CDS253001R0634 | |
| EAN | 4016779551076 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 63 A | |
| Number of poles | 3 | |
| Number of protected poles | 3 | |
| Trip characteristic | C Curve | |
| Rated operational voltage | 230/400 V AC (440 V AC to IEC/EN 60947-2) | |
| Rated frequency | 50 / 60 Hz | |
| Rated short-circuit breaking capacity (Icn) | 6 kA | |
| Ultimate short-circuit breaking capacity (Icu) | 20 kA at 230 V AC; 10 kA at 400/440 V AC | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Energy limiting class | 3 | |
| Protection rating | IP20 | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077, CSA 22.2 No. 235 | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | approximately 88 × 52.5 × 69 mm | |
| Weight | approximately 0.375 kg |
Frequently Asked Questions
What is the ABB S203C63 used for?
The ABB S203C63 protects three-phase electrical circuits against overloads and short circuits in residential, commercial and industrial installations.
What does the C curve characteristic mean?
A C curve breaker is designed for circuits with moderate inrush currents, making it suitable for motors, compressors, pumps, HVAC systems and other inductive loads.
How many poles does the ABB S203C63 have?
The ABB S203C63 is a 3-pole miniature circuit breaker for protecting three-phase electrical circuits.
What is the rated current?
The ABB S203C63 has a 63 amp current rating.
How is the breaker installed?
The breaker mounts directly onto a standard DIN rail inside distribution boards, switchgear assemblies and industrial control panels.
Trusted by Electrical Professionals Worldwide
ABB System pro M Compact miniature circuit breakers are trusted worldwide by electrical contractors, panel builders and industrial engineers for delivering dependable circuit protection, robust construction and long-term operational reliability across demanding electrical installations.
