Why Choose the ABB S303P-Z40 Miniature Circuit Breaker?
The ABB S303P-Z40 (2CDS383001R0558) is a premium three-pole miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in industrial electrical installations. As part of the trusted ABB S300P series, it combines rapid fault response, robust construction and high breaking capacity for reliable protection of sensitive three-phase electrical equipment.
Manufactured in accordance with recognised IEC and UL standards, the S303P-Z40 features a compact DIN rail design with fail-safe screw terminals and flexible top or bottom supply connection, making installation straightforward in industrial control panels, switchgear assemblies and power distribution systems.
With a rated current of 40 A, a Type Z tripping characteristic and a 25 kA rated short-circuit breaking capacity, the S303P-Z40 is particularly suited to protecting PLC systems, instrumentation, electronic control equipment and semiconductor devices where rapid fault disconnection is essential.
Key Advantages
- Industrial-grade three-pole miniature circuit breaker.
- 40 A rated current with Type Z tripping characteristics.
- Rapid protection for sensitive electronic equipment.
- 25 kA rated breaking capacity for demanding industrial installations.
- Suitable for PLCs, instrumentation and semiconductor protection.
- Compact DIN rail mounting for straightforward installation.
Key Features
- ABB S300P series.
- 3-pole configuration.
- 40 A rated current.
- Type Z tripping characteristic.
- Rated operating voltage up to 415 V AC.
- Rated DC voltage up to 125 V DC.
- 25 kA rated breaking capacity.
- Integrated trip indicator.
- Fail-safe screw terminals with top or bottom supply connection.
- DIN rail mounting compatible with ABB System pro M Compact accessories.
Reliable Protection for Sensitive Electrical Equipment
The ABB S303P-Z40 automatically disconnects electrical circuits during overload or short-circuit conditions, helping protect cables, PLCs, instrumentation and other sensitive electronic equipment while reducing downtime and preventing costly electrical damage.
Its Type Z tripping characteristic provides rapid operation at relatively low fault currents, making it especially suitable for semiconductor devices, electronic control systems and measurement equipment where fast protection is essential.
Typical Applications
- PLC and automation systems.
- Instrumentation circuits.
- Sensitive electronic equipment.
- Semiconductor protection.
- Industrial control panels.
- Machine building and OEM equipment.
