Why Choose the ABB S301P-D40 Miniature Circuit Breaker?
The ABB S301P-D40 is a high-quality miniature circuit breaker (MCB) from the ABB System pro M compact S300P series, designed to provide dependable protection for AC electrical circuits. This 1-pole circuit breaker has a rated current of 40 A and a D tripping characteristic, making it suitable for applications where higher starting or inrush currents may occur.
With a rated breaking capacity of 25 kA, the S301P-D40 provides effective interruption of overload and short-circuit faults. Its 1-pole configuration is designed for single-phase circuit protection without a neutral pole, making it suitable for a wide range of distribution, control and equipment protection applications.
Designed for convenient installation, the ABB S301P-D40 is suitable for DIN-rail mounting and forms part of ABB's System pro M compact modular protection platform, supporting organised and reliable electrical installations.
Key Advantages
- Reliable circuit protection: Provides thermal-magnetic protection against overload and short-circuit conditions.
- 40 A rated current: Suitable for circuits designed to operate at a rated current of 40 A.
- D tripping characteristic: Designed for circuits where higher starting and inrush currents can occur.
- 25 kA breaking capacity: Provides a high level of short-circuit interruption capability.
- 1-pole configuration: Provides protection for a single circuit pole without a neutral pole.
- DIN-rail mounting: Enables convenient installation in compatible distribution and control assemblies.
- System pro M compact platform: Forms part of ABB's modular circuit protection range.
Key Features
- ABB S301P-D40 miniature circuit breaker
- System pro M compact S300P series
- 1-pole construction, no neutral
- D tripping characteristic
- Rated current: 40 A
- Rated breaking capacity: 25 kA
- AC supply
- DIN-rail mounting
- Thermal-magnetic overload and short-circuit protection
- Part number: 2CDS381001R0401
Dependable D-Characteristic Protection for Higher-Inrush Circuits
The D tripping characteristic of the ABB S301P-D40 is designed for electrical circuits where higher starting or inrush currents may occur during normal equipment operation. This characteristic helps accommodate short-duration starting currents while providing protection against excessive overcurrent conditions.
The thermal protection function responds to sustained overload conditions, while magnetic protection provides rapid operation during high-current short-circuit faults. Combined with its 25 kA rated breaking capacity, the S301P-D40 provides dependable protection for AC distribution and control circuits.
Typical Applications
- Industrial control and distribution panels
- Commercial electrical distribution systems
- Building services and electrical installations
- Single-phase AC circuits
- Circuits supplying equipment with elevated starting currents
- Industrial machinery and equipment circuits
- Control and auxiliary circuits
- Modular distribution boards
