ABB S303P-Z6NA miniature circuit breaker with a 6 A current rating, Type Z tripping characteristic, 3P+N configuration and 25 kA breaking capacity for sensitive industrial circuit protection.
£220.34
The ABB S303P-Z6NA, product code 2CDS383103R0378, is a high-performance miniature circuit breaker (MCB) designed to protect industrial electrical installations against overloads and short circuits. As part of the dependable ABB System pro M compact S300P series, it combines sensitive tripping performance, high breaking capacity and robust construction for demanding control and distribution applications.
Featuring a Type Z tripping characteristic, the S303P-Z6NA is designed for circuits containing sensitive electronic components, semiconductor devices, instrumentation and automation equipment. Its rapid magnetic response helps disconnect fault currents before delicate equipment is damaged, while the thermal release provides reliable protection against sustained overload conditions.
With a rated current of 6 A, a 3P+N configuration and a rated operational voltage of 415 V AC, this miniature circuit breaker is suitable for three-phase industrial systems requiring simultaneous neutral switching. Its 25 kA breaking capacity, DIN rail mounting format and compatibility with ABB System pro M compact accessories make it an excellent choice for modern control panels and electrical distribution boards.
Miniature circuit breakers disconnect electrical circuits automatically when excessive current is detected. The thermal release responds to prolonged overloads, while the electromagnetic release operates rapidly during short circuits, helping protect cables, control equipment and connected electrical devices.
The Type Z characteristic of the ABB S303P-Z6NA provides a particularly sensitive magnetic trip response. This makes the breaker well suited to electronic loads and control circuits where even relatively low fault currents could damage components or disrupt production processes.
| Current | 6 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Model | S303P-Z6NA |
| Product ID | 2CDS383103R0378 |
| Product type | Miniature circuit breaker |
| Rated current | 6 A |
| Tripping characteristic | Type Z |
| Pole configuration | 3P+N |
| Total number of poles | 4 |
| Number of protected poles | 3 |
| Rated operational voltage | 415 V AC |
| Maximum system voltage | 480Y / 277 V AC |
| Maximum DC voltage | 125 V DC |
| Frequency | 50 / 60 Hz |
| Breaking capacity | 25 kA |
| Protection rating | IP20, up to IP40 in a suitable enclosure |
| Mounting type | DIN rail mounting |
| Terminal type | Screw terminals |
| Conductor capacity | 0.75 to 35 mm² |
| Electrical endurance | up to 20,000 operating cycles |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm |
| EAN | 4016779077026 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S303P-Z6NA protects sensitive three-phase industrial circuits, automation equipment and electronic devices against overloads and short circuits.
The S303P-Z6NA has a rated current of 6 A.
Type Z circuit breakers provide a highly sensitive magnetic trip response and are commonly used to protect electronic devices, semiconductor equipment and industrial control circuits.
The breaker provides a short-circuit breaking capacity of up to 25 kA.
The breaker is designed for mounting on a standard DIN rail inside an electrical distribution board, industrial control panel or machinery enclosure.
ABB System pro M compact miniature circuit breakers are widely specified by electrical engineers, panel builders and automation professionals for dependable protection, precise tripping performance and compatibility with modern industrial installations.
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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...