Why Choose the ABB 2CDS381001R0577 Miniature Circuit Breaker?
The ABB 2CDS381001R0577, also identified as the ABB S301P-K50, is a high-performance miniature circuit breaker (MCB) designed to protect industrial electrical installations against overloads and short circuits. As part of the advanced ABB System pro M compact S300P series, it provides dependable circuit protection where high breaking capacity and reliable operation are essential.
This single-pole circuit breaker combines a delayed thermal tripping mechanism for overload protection with an electromagnetic tripping mechanism for rapid short-circuit protection. Its compact modular design allows straightforward installation on a standard DIN rail, while compatibility with System pro M compact accessories supports flexible integration into control panels and distribution systems.
With a rated current of 50 A, a Type K tripping characteristic and a breaking capacity of up to 25 kA, the ABB 2CDS381001R0577 is particularly suitable for circuits supplying motors, transformers and other inductive loads that may generate elevated starting currents.
Key Advantages
- High-performance miniature circuit breaker for industrial installations.
- 50 A rated current for demanding electrical circuits.
- Type K tripping characteristic suitable for loads with elevated inrush currents.
- Breaking capacity of up to 25 kA for effective fault interruption.
- Compact, single-pole design for efficient use of distribution-board space.
- Compatible with ABB System pro M compact accessories and control-panel systems.
Key Features
- ABB System pro M compact S300P series.
- S301P-K50 miniature circuit breaker.
- Single-pole configuration.
- 50 A rated current.
- Type K tripping characteristic.
- 415 V AC and 125 V DC rated operational voltage.
- Thermal overload and electromagnetic short-circuit protection.
- Compact DIN rail mounted construction.
Reliable Circuit Protection for Industrial Installations
Miniature circuit breakers such as the ABB S301P-K50 automatically disconnect electrical circuits when overload or short-circuit conditions occur. This helps protect cables, machinery and connected equipment while reducing the risk of damage, unplanned downtime and electrical hazards.
The Type K tripping characteristic accommodates the temporary current surges generated when motors, transformers and other inductive loads start. This helps prevent unnecessary tripping while maintaining reliable protection against sustained overloads and dangerous fault currents.
Typical Applications
- Industrial control panels and switchboards.
- Motor and transformer supply circuits.
- Machine building and OEM equipment.
- Manufacturing and process automation systems.
- Commercial and industrial distribution boards.
- Transportation, renewable-energy and infrastructure installations.
