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.
£219.61
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.
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.
| Current | 0.5 A |
|---|---|
| Phase | Three Phase |
| 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 |
It protects sensitive three-phase electrical circuits and equipment against overloads and short circuits in industrial, commercial and automation applications.
The ABB S303P-Z0.5 has a rated current of 0.5 A.
A Z curve circuit breaker trips at relatively low overcurrent levels, making it suitable for sensitive electronic devices, control circuits and semiconductor equipment.
The circuit breaker provides a 25 kA short-circuit breaking capacity for reliable protection in demanding electrical installations.
The breaker is designed for mounting onto a standard 35 mm DIN rail inside electrical distribution boards, switchboards and industrial control panels.
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.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...