ABB S303P-Z63NA 63A Type Z miniature circuit breaker with 3P+N configuration and 25 kA breaking capacity for industrial electrical protection.
£296.96
The ABB 2CDS383103R0608, also identified as the S303P-Z63NA, 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 trusted ABB System pro M compact S300P series, it delivers outstanding reliability, a high short-circuit breaking capacity and compliance with international IEC and UL standards for demanding industrial environments.
Featuring a Type Z tripping characteristic, this circuit breaker is specifically designed to protect sensitive electronic equipment, semiconductor devices, PLCs, instrumentation and precision control circuits. Its rapid magnetic trip response minimises fault energy while providing dependable overload protection for valuable equipment.
With a rated current of 63 A, a 3P+N configuration and a rated operational voltage of up to 415 V AC, the S303P-Z63NA is ideal for industrial control panels, switchboards and OEM machinery. Its 25 kA ultimate breaking capacity, compact DIN rail mounting and industrial-grade construction make it suitable for demanding applications.
The ABB S303P-Z63NA 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 supplying sensitive electronic equipment requiring rapid fault clearance. This makes it an excellent choice for PLC systems, instrumentation, semiconductor devices, communication systems and precision automation equipment.
| Current | 63 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Model | S303P-Z63NA |
| Product ID | 2CDS383103R0608 |
| EAN | 4016779076777 |
| Product type | Miniature circuit breaker |
| Rated current | 63 A |
| Number of poles | 3P+N |
| Protected poles | 3 |
| Neutral pole | Switched |
| Tripping characteristic | Type Z |
| Rated operational voltage | 415 V AC |
| Voltage type | AC/DC |
| Rated frequency | 50 / 60 Hz |
| Rated insulation voltage | 500 V |
| Impulse withstand voltage | 6 kV |
| Ultimate short-circuit breaking capacity (IEC 60947-2) | 25 kA at 400/415 V AC |
| Rated breaking capacity (IEC 60898-1) | 15 kA at 400 V AC |
| Protection rating | IP20 (IP40 when installed in a suitable enclosure) |
| Mounting type | 35 mm DIN rail |
| Terminal capacity | 0.75 to 35 mm² solid, 0.75 to 25 mm² flexible |
| Operating temperature | -40 to +70 °C |
| Approximate dimensions (H × W × D) | 88 × 70 × 69 mm |
| Approximate weight | 0.496 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It protects sensitive three-phase electrical circuits against overloads and short circuits, particularly electronic control systems, PLCs and industrial automation equipment.
The ABB S303P-Z63NA has a rated current of 63 A.
Type Z breakers provide rapid magnetic tripping, making them ideal for protecting sensitive electronic devices, instrumentation 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 35 mm DIN rail inside industrial control panels and electrical distribution boards.
ABB System pro M compact S300P miniature circuit breakers are trusted worldwide for delivering dependable overload and short-circuit protection for industrial automation, machinery and electrical distribution systems.
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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...