ABB S301P-Z2 single-pole miniature circuit breaker with a 2 A rating, Type Z tripping characteristic and 25 kA breaking capacity for sensitive electronic circuit protection.
£63.10
The ABB 2CDS381001R0278, also known as the S301P-Z2, is a premium single-pole miniature circuit breaker (MCB) from the ABB System pro M compact S300P series. It is designed to provide dependable protection against overloads and short circuits in industrial electrical installations where highly sensitive electronic equipment requires extremely fast fault protection.
Featuring a Type Z tripping characteristic, the S301P-Z2 is specifically engineered for protecting PLCs, semiconductor devices, instrumentation, control circuits, measuring equipment and other sensitive electronic systems. Its very sensitive magnetic tripping characteristic rapidly disconnects low-level fault currents before damage can occur.
With a 2 A rated current, compact single-pole construction and a 25 kA rated short-circuit breaking capacity, the ABB 2CDS381001R0278 delivers exceptional circuit protection whilst occupying only one DIN module, making it ideal for industrial automation and control panels.
The ABB S301P-Z2 is specifically developed for protecting highly sensitive electronic circuits. Its thermal release protects against overload conditions, while its highly sensitive magnetic release rapidly disconnects low-level fault currents before damage can occur to valuable electronic equipment.
The Type Z characteristic trips magnetically at approximately two to three times the rated current, making it ideal for PLC systems, laboratory equipment, instrumentation, semiconductor devices and precision industrial control systems where rapid fault clearance is essential.
| Current | 2 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Model | S301P-Z2 |
| Product ID | 2CDS381001R0278 |
| EAN | 4016779080309 |
| Product type | Miniature circuit breaker |
| Rated current | 2 A |
| Number of poles | 1 |
| Protected poles | 1 |
| Tripping characteristic | Type Z |
| Magnetic tripping range | Approximately 2 to 3 × rated current |
| Rated operational voltage | 240 V AC / 72 V DC |
| Frequency | 50 / 60 Hz |
| Rated insulation voltage (Ui) | 500 V |
| Rated impulse withstand voltage (Uimp) | 6 kV |
| Ultimate short-circuit breaking capacity (Icu) | 25 kA |
| Service short-circuit breaking capacity (Ics) | 12.5 kA |
| Protection rating | IP20 (IP40 when installed inside an enclosure) |
| Mounting type | 35 mm DIN rail |
| Dimensions (H × W × D) | 88 × 17.5 × 69 mm |
| Weight | Approx. 0.124 kg |
| Operating temperature | -40 °C to +70 °C |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 and CSA 22.2 No. 235 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It protects highly sensitive electronic equipment, instrumentation and industrial control circuits against overloads and short circuits.
The ABB S301P-Z2 has a rated current of 2 A.
A Type Z circuit breaker trips magnetically at approximately two to three times its rated current, providing rapid protection for delicate electronic equipment and semiconductor devices.
The ABB S301P-Z2 provides an ultimate short-circuit breaking capacity of up to 25 kA.
Yes. The S301P-Z2 is suitable for applications up to 72 V DC, subject to the applicable installation requirements.
It mounts directly onto a standard 35 mm DIN rail and features fail-safe terminals for secure installation.
ABB System pro M compact S300P miniature circuit breakers are trusted by electrical engineers, OEM manufacturers and panel builders worldwide for dependable circuit protection, high fault interruption capability and outstanding reliability in industrial applications.
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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...