Why Choose the ABB 2CDS383103R0558 S303P-Z40NA Miniature Circuit Breaker?
The ABB 2CDS383103R0558, also identified as the S303P-Z40NA, is a premium miniature circuit breaker (MCB) engineered to provide dependable protection against overloads and short circuits in industrial electrical installations. As part of the renowned ABB System pro M compact S300P series, it delivers exceptional reliability, high breaking performance and compliance with international IEC, UL and CSA standards for demanding applications.
Featuring a Type Z tripping characteristic, this circuit breaker is specifically designed to protect sensitive electronic equipment, semiconductor devices, PLCs, instrumentation and control circuits. Its fast magnetic trip response helps minimise fault energy, reducing the risk of damage to valuable electrical equipment while ensuring reliable overload protection.
With a rated current of 40 A, a 3P+N configuration and a rated operational voltage of up to 415 V AC, the S303P-Z40NA is ideal for industrial control panels, switchboards and OEM machinery. Its 25 kA breaking capacity, compact DIN rail mounting and robust construction make it suitable for demanding industrial environments.
Key Advantages
- Industrial miniature circuit breaker for overload and short-circuit protection.
- 40 A rated current for demanding industrial electrical systems.
- 3P+N pole configuration for three-phase systems with neutral.
- Type Z tripping characteristic for sensitive electronic equipment.
- 25 kA ultimate breaking capacity for industrial installations.
- Rapid magnetic tripping helps protect sensitive electrical devices.
- Bi-directional terminals simplify installation.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S300P series.
- S303P-Z40NA model.
- 40 A rated current.
- 415 V AC rated operational voltage.
- 3P+N pole arrangement.
- Type Z tripping characteristic.
- 25 kA ultimate short-circuit breaking capacity.
- 50 / 60 Hz operation.
- 35 mm DIN rail mounting.
- Contact position and trip indication.
Reliable Protection for Sensitive Electrical Equipment
The ABB S303P-Z40NA automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping protect wiring, industrial control equipment and connected electronic devices. Its industrial-grade construction provides dependable long-term performance in demanding environments.
Its Type Z tripping characteristic is intended for circuits containing sensitive electronic equipment that requires fast fault clearance. This makes it an excellent choice for PLC systems, instrumentation, semiconductor devices, communication systems and precision automation equipment.
Typical Applications
- Industrial control panels.
- PLC and automation systems.
- Electronic control equipment.
- Instrumentation and semiconductor circuits.
- Commercial electrical distribution.
- Factory automation.
- OEM machinery and machine building.
