Why Choose the ABB 2CDS381103R0205 S301P-B20NA Miniature Circuit Breaker?
The ABB 2CDS381103R0205, also known as the S301P-B20NA, is a premium miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in industrial and commercial electrical installations. As part of the trusted ABB System pro M compact S300P series, it is manufactured to international IEC and UL standards, making it suitable for demanding applications requiring reliable circuit protection.
Featuring a 20 A rated current, a Type B tripping characteristic and a high 25 kA short-circuit breaking capacity, the S301P-B20NA is ideal for protecting lighting circuits, distribution systems, resistive loads and general-purpose electrical equipment. Its Type B characteristic provides fast disconnection under overload conditions, making it particularly suitable for circuits with low inrush currents.
With a 1P+N pole configuration, a 240 V AC rated operational voltage and compatibility with selected 72 V DC applications, the S301P-B20NA offers flexible circuit protection. Its compact DIN rail mounting, fail-safe bi-directional screw terminals and contact position indication simplify installation and maintenance inside electrical distribution boards and industrial control panels.
Key Advantages
- High-performance miniature circuit breaker for industrial circuit protection.
- 20 A rated current for branch and distribution circuits.
- Type B tripping characteristic for resistive and general-purpose electrical loads.
- 25 kA short-circuit breaking capacity.
- 1P+N configuration for phase and neutral switching.
- Reliable protection against overloads and short circuits.
- Compact DIN rail mounted design saves panel space.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S300P series.
- S301P-B20NA miniature circuit breaker.
- 20 A rated current.
- Type B tripping curve.
- 25 kA breaking capacity.
- 1P+N pole configuration.
- 240 V AC rated operational voltage.
- 72 V DC rated operational voltage.
- Fail-safe bi-directional screw terminals.
- DIN rail mounting with contact position indication.
Reliable Circuit Protection for Industrial Installations
The ABB S301P-B20NA automatically disconnects electrical circuits when overload or short-circuit conditions occur, helping protect wiring, distribution equipment and connected electrical devices from damage. Its thermal and magnetic trip mechanisms ensure reliable operation and long service life in demanding environments.
Designed for industrial applications, the ABB S300P range combines high breaking performance with compact dimensions and dependable construction. It is widely used by panel builders, OEMs and electrical contractors where reliable protection and compliance with international standards are essential.
Typical Applications
- Industrial electrical distribution boards.
- Commercial electrical installations.
- Lighting circuits.
- Control panels and switchboards.
- Building services installations.
- OEM machinery.
- Infrastructure projects.
- General-purpose electrical protection.
