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2CDS271527R0578 ABB SU201DC-Z50 50A 1P Type Z 14kA DC Miniature Circuit Breaker
ABB SU201DC-Z50 is a 50 A single-pole Type Z DC miniature circuit breaker with a 14 kA short-circuit rating, designed for sensitive overload and short-circuit protection in demanding DC electrical systems.
£84.29
Why Choose the ABB SU201DC-Z50 Miniature Circuit Breaker?
The ABB SU201DC-Z50 is a high-performance single-pole DC miniature circuit breaker (MCB) designed to protect direct-current electrical circuits against overload and short-circuit conditions. As part of the ABB SU200DC series, it provides dependable circuit protection for demanding industrial, automation and transportation applications.
Featuring a 50 A rated current, Type Z tripping characteristic and 14 kA short-circuit rating, the SU201DC-Z50 combines sensitive magnetic tripping with robust fault-current interruption. The Z characteristic is particularly suited to circuits containing sensitive electronic or semiconductor equipment where rapid response to comparatively low fault currents is required.
The SU201DC-Z50 uses a compact 1-pole modular configuration suitable for DIN-rail installation in distribution boards, control panels and industrial electrical assemblies. Its dedicated DC design and high interrupting capability make it suitable for higher-current control, auxiliary power and traction-related DC circuits requiring sensitive protection.
Key Advantages
- Purpose-designed miniature circuit breaker for DC applications.
- 50 A rated current for higher-current industrial circuits.
- Type Z tripping characteristic for sensitive electrical and electronic loads.
- High 14 kA short-circuit rating.
- Compact single-pole configuration for space-efficient installations.
- Thermal-magnetic protection against overload and short-circuit conditions.
- DIN-rail format for straightforward integration into modular electrical panels.
- Part of ABB's established circuit protection portfolio for demanding DC systems.
Key Features
- ABB SU200DC miniature circuit breaker series.
- 50 A nominal current.
- 1-pole configuration.
- Type Z characteristic.
- 14 kA short-circuit rating.
- Thermal-magnetic overload and short-circuit protection.
- Designed specifically for direct-current circuit protection.
- Compact modular construction for control and distribution panels.
- DIN-rail mounting for convenient installation in electrical assemblies.
Sensitive Protection for Higher-Current DC Circuits
Miniature circuit breakers such as the ABB SU201DC-Z50 automatically disconnect a circuit when excessive current caused by an overload or short circuit is detected. This helps protect conductors and connected electrical equipment while providing resettable protection that can be returned to service after the underlying fault has been identified and corrected.
The Type Z characteristic provides sensitive instantaneous tripping compared with characteristics intended for loads with substantial starting currents. This makes the SU201DC-Z50 particularly suitable for protecting sensitive electronic, semiconductor, control and instrumentation equipment where rapid interruption of fault currents is important.
Typical Applications
- Industrial DC power distribution systems.
- Electronic and semiconductor equipment protection.
- Industrial automation and control panels.
- PLC and instrumentation circuits.
- DC auxiliary and control power systems.
- Transportation and traction electrical systems.
- Industrial machinery and production equipment.
Technical Specifications
| Series | SU200DC |
|---|---|
| ABB order code | 2CDS271527R0578 |
| Product type | DC miniature circuit breaker (MCB) |
| Rated current | 50 A |
| Number of poles | 1 |
| Tripping characteristic | Z |
| Short-circuit rating | 14 kA |
| Protection principle | Thermal-magnetic |
| Mounting type | DIN rail |
| Product group | DC / Traction MCB |
Frequently Asked Questions
What is the ABB SU201DC-Z50 used for?
The ABB SU201DC-Z50 is a DC miniature circuit breaker designed to protect electrical circuits and connected equipment against overload and short-circuit currents.
What is the current rating of the SU201DC-Z50?
The SU201DC-Z50 has a rated current of 50 A, making it suitable for higher-current DC circuit protection applications.
What does the Type Z characteristic mean?
The Type Z tripping characteristic provides sensitive magnetic operation and is particularly suitable for electronic, semiconductor, control and instrumentation circuits requiring rapid response to fault currents.
What is the short-circuit rating of the ABB SU201DC-Z50?
The SU201DC-Z50 has a 14 kA short-circuit rating, providing high fault-current interruption capability for suitable DC installations.
How many poles does the SU201DC-Z50 have?
The SU201DC-Z50 is a single-pole (1P) miniature circuit breaker designed for compact DC circuit protection.
Trusted ABB Circuit Protection
ABB SU200DC miniature circuit breakers provide dependable overload and short-circuit protection for demanding DC electrical systems, combining compact modular construction, application-specific tripping characteristics and high interruption capability.
