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ABB S303P-D50 MCB – 3P – D Curve – 50A – 25kA
ABB S303P-D50 miniature circuit breaker, a 50 A three-pole AC MCB with D tripping characteristic and 25 kA rated breaking capacity for high-performance circuit protection.
£115.56
Why Choose the ABB S303P-D50 Miniature Circuit Breaker?
The ABB S303P-D50 is a compact three-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits. As part of the ABB System pro M compact S300P series, it provides high-performance circuit protection with a D tripping characteristic for applications where higher inrush currents can occur.
The S300P series is designed for demanding electrical protection applications and combines high short-circuit breaking capacity with a modular construction suited to distribution boards and control panels. Its compact design supports straightforward installation, while compatibility with the System pro M compact accessory range allows additional functionality where required.
With a 50 A rated current, three-pole configuration and 25 kA rated breaking capacity, the S303P-D50 is suitable for AC circuit protection where a D characteristic is required. Its modular format and DIN-rail mounting make it practical for compact low-voltage distribution installations.
Key Advantages
- Compact miniature circuit breaker designed for demanding circuit protection applications.
- 50 A rated current for higher-current circuit protection.
- Three-pole configuration for three-phase AC circuit protection.
- D tripping characteristic suitable for circuits with higher starting or inrush currents.
- 25 kA rated breaking capacity for high-performance short-circuit protection.
- DIN-rail mounting enables straightforward installation in distribution boards and control panels.
Key Features
- ABB System pro M compact S300P series.
- 50 A rated current.
- 3-pole construction with no neutral pole.
- D tripping characteristic.
- 25 kA rated breaking capacity.
- AC supply for low-voltage electrical installations.
- Thermal and electromechanical overcurrent protection.
- High short-circuit breaking capacity for demanding applications.
- DIN-rail mounting for distribution boards and control panels.
- Compatible with the System pro M compact accessory range.
- Modular construction occupying three standard modules.
High-Performance Circuit Protection for Electrical Installations
Miniature circuit breakers such as the ABB S303P-D50 protect electrical circuits by responding to excessive current conditions. The thermal release provides delayed protection against overloads, while the electromechanical release responds rapidly to short-circuit conditions, helping protect conductors and connected equipment.
The S300P series is designed for demanding commercial and industrial applications. Its D tripping characteristic is intended for circuits where equipment can generate higher starting or inrush currents, while the high breaking capacity provides robust short-circuit protection.
Typical Applications
- Industrial electrical distribution systems.
- Commercial building distribution boards.
- Three-phase control panels and automation installations.
- Circuits supplying equipment with higher inrush currents.
- Industrial machinery and equipment circuits.
- Low-voltage AC three-phase circuit protection.
Technical Specifications
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| Current | 50 A | |
|---|---|---|
| Poles | 3-pole | |
| Phase | Three Phase | |
| Device Type | MCB | |
| Trip Curve | D curve | |
| Breaking Capacity | 25 kA | |
| Product type | Miniature circuit breaker | |
| Product ID | 2CDS383001R0501 | |
| Rated current | 50 A | |
| Number of poles | 3 | |
| Neutral pole | None | |
| Tripping characteristic | D | |
| Supply type | AC | |
| Frequency | 50 / 60 Hz | |
| Rated service short-circuit breaking capacity | 15 kA | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Module width | 52.5 mm | |
| Rated impulse withstand voltage | 6 kV | |
| Product dimensions (W × H × D) | 52.5 × 88 × 69 mm | |
| Weight | approx. 0.372 kg | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 and CSA 22.2 No. 235 | |
| Manufacturer | ABB | |
| Series | System pro M compact S300P | |
| Model | S303P-D50 | |
| Order code | 2CDS383001R0501 | |
| Rated breaking capacity | 25 kA | |
| Supply | AC |
Frequently Asked Questions
What is the ABB S303P-D50 used for?
The ABB S303P-D50 is a three-pole miniature circuit breaker used to protect low-voltage AC electrical circuits against overloads and short circuits.
What rated current does the S303P-D50 support?
The S303P-D50 has a 50 A rated current.
What is the tripping characteristic of the S303P-D50?
The S303P-D50 uses a D tripping characteristic, making it suitable for circuits where higher starting or inrush currents can occur.
What is the breaking capacity of this circuit breaker?
The S303P-D50 has a 25 kA rated breaking capacity.
How is the ABB S303P-D50 mounted?
The S303P-D50 is designed for DIN-rail mounting in distribution boards, control panels and other low-voltage electrical enclosures.
Trusted by Electrical Professionals Worldwide
ABB System pro M compact S300P miniature circuit breakers provide high-performance overload and short-circuit protection for demanding electrical installations, with compact modular construction and flexible compatibility with System pro M compact accessories.
