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2CDS383001R0158 ABB S303P-Z0.5 Miniature Circuit Breaker – 3P – Z – 0.5 A
ABB S303P-Z0.5 three-pole miniature circuit breaker with a 0.5 A rated current, Z curve tripping characteristic and 25 kA breaking capacity for sensitive industrial and electronic circuits.
£120.79
Why Choose the ABB S303P-Z0.5 Miniature Circuit Breaker?
The ABB S303P-Z0.5 is a high-performance three-pole miniature circuit breaker (MCB) designed to protect sensitive electrical equipment against overloads and short circuits in industrial, commercial and OEM installations. As part of the established ABB System pro M compact S300P series, it provides accurate tripping performance and dependable protection for circuits requiring a rapid response to overcurrent conditions.
Engineered in accordance with international IEC and UL standards, the S303P-Z0.5 combines reliable electrical protection with a compact DIN rail mounted design. Its robust construction, clear switching indication and fail-safe terminals support straightforward installation, safe operation and efficient maintenance within distribution boards and industrial control panels.
Featuring a 0.5 A rated current, a sensitive Z curve tripping characteristic and a 25 kA breaking capacity, this miniature circuit breaker is particularly suitable for protecting electronic devices, control circuits, semiconductor equipment and other loads with low tolerance for short-duration overcurrents.
Key Advantages
- Compact three-pole miniature circuit breaker for sensitive industrial circuits.
- 0.5 A rated current for low-current equipment and control applications.
- Z curve tripping characteristic provides rapid response to overcurrent conditions.
- 25 kA breaking capacity for demanding electrical installations.
- Fail-safe terminals help reduce the risk of incorrect conductor installation.
- Compatible with ABB System pro M compact accessories and distribution components.
Key Features
- ABB System pro M compact S300P series.
- 0.5 A rated current.
- Three protected poles.
- Z curve tripping characteristic.
- 415 V AC rated operational voltage.
- 25 kA short-circuit breaking capacity.
- IP20 protection rating.
- Standard 35 mm DIN rail mounting.
Rapid Protection for Sensitive Electrical Equipment
The ABB S303P-Z0.5 automatically disconnects the electrical supply when an overload or short circuit is detected. Its Z curve characteristic is designed to operate at relatively low multiples of the rated current, providing fast protection for electronic components and equipment that may be damaged by even brief overcurrent conditions.
The ABB S300P range is developed for demanding industrial installations where high breaking performance, accurate operation and compliance with international product standards are essential. Its modular design enables efficient integration into modern electrical distribution and automation systems.
Typical Applications
- Electronic equipment and semiconductor circuits.
- Industrial control and instrumentation circuits.
- PLC and automation control panels.
- Sensitive measurement equipment.
- OEM machinery and production systems.
- Commercial and industrial distribution boards.
Technical Specifications
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| Current | 0.5 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Breaking Capacity | 25 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S300P | |
| Model | S303P-Z0.5 | |
| SKU | 2CDS383001R0158 | |
| EAN | 4016779078078 | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 0.5 A | |
| Tripping characteristic | Z Curve | |
| Number of poles | 3 | |
| Rated operational voltage | 415 V AC | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 25 kA | |
| Protection rating | IP20 | |
| Mounting type | 35 mm DIN rail | |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm | |
| Weight | approx. 0.372 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S303P-Z0.5 used for?
It protects sensitive three-phase electrical circuits and equipment against overloads and short circuits in industrial, commercial and automation applications.
What is the rated current of this circuit breaker?
The ABB S303P-Z0.5 has a rated current of 0.5 A.
What does the Z curve tripping characteristic mean?
A Z curve circuit breaker trips at relatively low overcurrent levels, making it suitable for sensitive electronic devices, control circuits and semiconductor equipment.
What is the breaking capacity of the S303P-Z0.5?
The circuit breaker provides a 25 kA short-circuit breaking capacity for reliable protection in demanding electrical installations.
How is the ABB S303P-Z0.5 installed?
The breaker is designed for mounting onto a standard 35 mm DIN rail inside electrical distribution boards, switchboards and industrial control panels.
Trusted by Electrical Professionals Worldwide
ABB System pro M compact miniature circuit breakers are trusted by electrical engineers, panel builders and automation specialists for accurate circuit protection, dependable performance and long-term operational safety.
