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ABB S203MT-Z63NAH10 MCB – S200M – 3P+N – Z – 63A
ABB S203MT-Z63NAH10 miniature circuit breaker with Z characteristic, 63 A rated current, 3P+N configuration and 10 kA breaking capacity for industrial, railway and sensitive circuit protection.
This product has been discontinued
A direct replacement is available below.
Replacement product
ABB s203mt-z63na mcb s200p 4p z type 63amp
SKU: S203MT-Z63NA
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Why Choose the ABB S203MT-Z63NAH10 Miniature Circuit Breaker?
The ABB S203MT-Z63NAH10 is a high-performance three-pole plus neutral (3P+N) miniature circuit breaker (MCB) designed to provide dependable overload and short-circuit protection for industrial, railway and transportation electrical systems. As part of the specialist ABB S200MT miniature circuit breaker series, it is engineered for demanding low-voltage installations where reliability, safety and compact installation are essential.
Featuring a Z tripping characteristic, this miniature circuit breaker is suited to sensitive electrical circuits requiring rapid magnetic tripping at relatively low fault currents. It is particularly useful for protecting electronic equipment, PLC circuits, signalling systems and control circuits where fast disconnection can help reduce the risk of damage to connected devices.
With a 63 A rated current, 3P+N configuration and 10 kA short-circuit breaking capacity, the ABB S203MT-Z63NAH10 is ideal for DIN rail mounted industrial control panels, railway electrical systems, OEM machinery and modular distribution boards requiring precise and reliable circuit protection.
Key Advantages
- Compact 3P+N miniature circuit breaker for industrial and railway applications.
- 63 A rated current suitable for higher current sensitive circuits.
- Z characteristic provides rapid protection for electronic equipment.
- 10 kA short-circuit breaking capacity for dependable fault protection.
- Integrated switched neutral for flexible circuit design.
- DIN rail mounting for straightforward installation in electrical panels.
Key Features
- ABB S200MT miniature circuit breaker series.
- 63 A rated current.
- Z tripping characteristic.
- Three protected poles plus switched neutral (3P+N).
- 10 kA rated breaking capacity.
- Thermal overload and magnetic short-circuit protection.
- Current-limiting design for enhanced installation safety.
- DIN rail mounting with screw terminals.
Reliable Protection for Sensitive Electrical Systems
The ABB S203MT-Z63NAH10 combines thermal overload protection with fast magnetic short-circuit protection to help safeguard sensitive electrical installations. Its Z characteristic enables rapid fault clearance, making it suitable for circuits where electronic devices and control equipment require precise protection.
Designed for demanding industrial, railway and transportation environments, the ABB S200MT range provides compact modular construction, dependable performance and straightforward integration into professional electrical panel layouts.
Typical Applications
- Industrial control panels.
- Railway and traction electrical systems.
- Sensitive electronic control circuits.
- PLC and automation equipment.
- OEM machinery and automation systems.
- Low-voltage electrical distribution boards.
Technical Specifications
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| Current | 63 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | S200MT | |
| Model | S203MT-Z63NAH10 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 63 A | |
| Tripping characteristic | Z | |
| Number of poles | 3P+N | |
| Protected poles | 3 | |
| Rated operational voltage | Up to 440 V AC | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Rated short-circuit breaking capacity | 10 kA | |
| Frequency | 50 / 60 Hz | |
| Current limiting class | 3 | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Terminal type | Screw terminals |
Frequently Asked Questions
What is the ABB S203MT-Z63NAH10 used for?
It is used to protect sensitive electrical circuits against overloads and short circuits in industrial, railway and automation applications.
What does the Z tripping characteristic mean?
The Z characteristic provides rapid magnetic tripping at relatively low fault currents, making it suitable for sensitive electronic equipment and control circuits.
What is the rated current of this miniature circuit breaker?
The ABB S203MT-Z63NAH10 has a rated current of 63 A.
What is the breaking capacity of this MCB?
This miniature circuit breaker provides a rated short-circuit breaking capacity of 10 kA.
Where is this circuit breaker typically installed?
It is designed for DIN rail installation inside industrial control panels, distribution boards, railway systems and OEM machinery.
Trusted by Electrical Professionals Worldwide
ABB S200MT miniature circuit breakers are trusted by panel builders, railway engineers and industrial automation specialists for dependable protection, compact installation and long service life in demanding low-voltage systems.
