Why Choose the ABB S303P-Z32 Miniature Circuit Breaker?
The ABB S303P-Z32 (2CDS383001R0538) is a high-performance three-pole miniature circuit breaker (MCB) designed to protect industrial electrical installations against overloads and short circuits. As part of the advanced ABB S300P series, it combines rapid fault response, robust construction and dependable switching performance for sensitive three-phase circuits.
Manufactured in accordance with recognised IEC and UL standards, the S303P-Z32 is suitable for installation in industrial control panels, switchgear assemblies and power distribution systems. Its compact modular design, fail-safe bi-directional terminals and flexible top or bottom supply connection help simplify installation and improve wiring security.
With a rated current of 32 A, a Type Z tripping characteristic and a rated ultimate short-circuit breaking capacity of 25 kA at 415 V AC, the S303P-Z32 is particularly suitable for protecting sensitive electronic equipment, PLC systems, instrumentation and semiconductor-based loads requiring fast fault disconnection.
Key Advantages
- Industrial-grade three-pole miniature circuit breaker.
- 32 A rated current for demanding three-phase circuits.
- Type Z tripping characteristic for sensitive electrical and electronic loads.
- 25 kA breaking capacity at 415 V AC.
- Fail-safe terminals help prevent incorrect conductor installation.
- Compact DIN rail design supports efficient panel assembly.
Key Features
- ABB S300P series.
- Three-pole configuration.
- 32 A rated current.
- Type Z tripping characteristic.
- Rated operating voltage up to 415 V AC.
- Maximum operating voltage up to 125 V DC.
- 25 kA ultimate short-circuit breaking capacity at 415 V AC.
- Fail-safe bi-directional cylinder-lift screw terminals.
- Top or bottom supply connection with cables or busbars.
- Red ON and green OFF position indication.
Reliable Protection for Sensitive Electrical Equipment
The ABB S303P-Z32 automatically disconnects the electrical supply when excessive current is caused by an overload or short circuit. This helps protect cables, control equipment and connected devices while reducing the risk of component damage, production interruptions and unplanned downtime.
Its Type Z tripping characteristic provides rapid magnetic operation at relatively low fault-current levels. This makes the breaker especially suitable for sensitive electronic circuits, semiconductor devices, instrumentation and automation equipment where fast disconnection is essential.
Typical Applications
- PLC and industrial automation systems.
- Instrumentation and measurement circuits.
- Sensitive electronic equipment.
- Semiconductor and control-device protection.
- Industrial control panels.
- Machine building and OEM equipment.
