ABB S303P-Z63 three-pole miniature circuit breaker with a 63 A rated current, Type Z tripping characteristic and 25 kA breaking capacity for sensitive industrial circuit protection.
£243.11
The ABB S303P-Z63 (2CDS383001R0608) is a premium three-pole miniature circuit breaker (MCB) engineered to provide dependable protection against overloads and short circuits in demanding industrial electrical installations. As part of the trusted ABB S300P series, it delivers rapid fault response, high breaking performance and reliable protection for sensitive three-phase electrical systems.
Manufactured to international IEC and UL standards, the S303P-Z63 is designed for industrial control panels, switchgear assemblies, OEM machinery and automation systems. Its compact DIN rail design, fail-safe screw terminals and flexible top or bottom supply connection enable straightforward installation and long-term reliability.
With a rated current of 63 A, a Type Z tripping characteristic and a rated ultimate short-circuit breaking capacity of 25 kA at 400/415 V AC, the S303P-Z63 is particularly suitable for protecting PLCs, instrumentation, semiconductor devices and other sensitive electronic equipment requiring rapid fault disconnection.
The ABB S303P-Z63 automatically disconnects electrical circuits during overload or short-circuit conditions, helping protect PLCs, instrumentation, semiconductor devices, cables and sensitive control equipment from electrical damage while reducing downtime and maintenance costs.
Its Type Z tripping characteristic provides rapid magnetic operation at relatively low fault-current levels, making it ideal for industrial automation systems and electronic control circuits where fast fault clearance is essential.
| Current | 63 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S300P |
| Model | S303P-Z63 |
| Product ID | 2CDS383001R0608 |
| EAN | 4016779077576 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 63 A |
| Number of poles | 3 |
| Number of protected poles | 3 |
| Tripping characteristic | Type Z |
| Rated AC voltage | 415 V AC |
| Rated DC voltage | 125 V DC |
| Rated insulation voltage | 500 V |
| Rated impulse withstand voltage | 6 kV |
| Rated ultimate short-circuit breaking capacity (Icu) | 25 kA at 400/415 V AC |
| Rated service breaking capacity (Icn) | 15 kA at 400 V AC |
| Frequency | 50 / 60 Hz |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | 88 × 52.5 × 69 mm |
| Weight | Approx. 0.372 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The S303P-Z63 protects sensitive three-phase industrial circuits against overloads and short circuits, making it ideal for PLCs, instrumentation and electronic control equipment.
The ABB S303P-Z63 has a rated current of 63 A.
Type Z circuit breakers provide rapid disconnection at relatively low fault-current levels, making them ideal for protecting sensitive electronic and semiconductor equipment.
The breaker provides a rated ultimate short-circuit breaking capacity of 25 kA at 400/415 V AC.
The breaker mounts directly onto a standard DIN rail inside industrial control panels, switchboards and electrical distribution systems.
ABB S300P miniature circuit breakers are trusted by electrical engineers, panel builders and OEM manufacturers for dependable protection, high breaking performance and reliable operation in demanding industrial environments.
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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...