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2CDA384799R0981 ABB M304P-D0.5 Magnetic Circuit Breaker 25kA 4P D 0.5A
ABB M304P-D0.5 is a 0.5 A four-pole D-characteristic magnetic-only miniature circuit breaker with 25 kA short-circuit breaking capacity for industrial circuit protection.
£190.38
Why Choose the ABB M304P-D0.5 Magnetic Circuit Breaker?
The ABB M304P-D0.5 is a high-performance four-pole magnetic-only miniature circuit breaker designed to provide reliable short-circuit protection in industrial electrical installations. Part of the ABB M300P / System pro M compact range, it combines a rated current of 0.5 A with a D tripping characteristic and high short-circuit performance for demanding machinery, control and distribution applications.
Unlike conventional thermal-magnetic miniature circuit breakers, the M304P-D0.5 uses magnetic-only tripping, making it particularly suitable for circuits where dedicated short-circuit protection is required and overload protection is provided separately. Its four-pole configuration provides simultaneous protection across all four poles, while the D characteristic is suited to circuits subject to transient or inrush currents.
With a rated current of 0.5 A, four protected poles and a 25 kA short-circuit breaking capacity, the M304P-D0.5 provides robust protection in a compact modular format. Its DIN-rail mounting and screw-terminal connections enable straightforward integration into industrial electrical panels, machinery and distribution equipment.
Key Advantages
- High-performance magnetic-only circuit breaker for short-circuit protection.
- 0.5 A rated current for low-current industrial circuits.
- Four poles with four protected poles for multi-pole applications.
- D magnetic tripping characteristic suitable for circuits subject to transient and inrush currents.
- 25 kA short-circuit breaking capacity for demanding industrial fault conditions.
- Compact modular construction for installation in industrial distribution and control equipment.
Key Features
- ABB M300P magnetic-only circuit breaker range.
- 0.5 A rated current.
- 4-pole configuration with all four poles protected.
- D magnetic-only tripping characteristic.
- 25 kA short-circuit breaking capacity.
- 500 V rated insulation voltage (Ui).
- 6 kV rated impulse withstand voltage (Uimp).
- 50 / 60 Hz and DC rated frequency.
- IP20 protection for the device.
- Robust screw-terminal connections for industrial wiring.
Reliable Magnetic Protection for Industrial Circuits
Magnetic-only circuit breakers such as the ABB M304P-D0.5 are designed to respond rapidly to short-circuit fault currents without incorporating the conventional thermal overload element found in thermal-magnetic MCBs. This makes them particularly useful where overload protection is provided separately and dedicated magnetic short-circuit protection is required.
The ABB M300P range is designed for industrial electrical installations requiring robust circuit protection. The M304P-D0.5 combines a low 0.5 A rated current with four protected poles, a D magnetic characteristic and compact modular construction, making it suitable for machinery, automation, control-panel and industrial distribution applications.
Typical Applications
- Industrial four-pole electrical circuits.
- Machinery and automation control panels.
- Low-current industrial control circuits.
- Circuits with separately coordinated overload protection.
- Circuits subject to transient or inrush currents.
- OEM machinery and industrial electrical installations.
Technical Specifications
| Series | M300P / System pro M compact |
|---|---|
| ABB order code | 2CDA384799R0981 |
| Product group | S200M / S300P MCB |
| Product type | Magnetic-only miniature circuit breaker |
| Rated current | 0.5 A |
| Tripping characteristic | D (magnetic only) |
| Number of poles | 4 |
| Number of protected poles | 4 |
| Short-circuit breaking capacity | 25 kA |
| Rated frequency | 50 / 60 Hz and DC |
| Rated insulation voltage (Ui) | 500 V |
| Rated impulse withstand voltage (Uimp) | 6 kV |
| Protection rating | IP20 |
| Pollution degree | 3 |
| Operating temperature | -40 to +70 °C |
| Terminal type | Screw terminal |
| Tightening torque | 2.8 N·m |
| Connectable conductor cross-section, stranded | 0.75–25 mm² |
| Connectable conductor cross-section, solid | 0.75–35 mm² |
| Mounting type | DIN rail |
| Width | 4 modular units / 70 mm |
| Dimensions (H × W × D) | 88 × 70 × 69 mm |
Frequently Asked Questions
What is the ABB M304P-D0.5 used for?
The ABB M304P-D0.5 is a four-pole magnetic-only circuit breaker designed primarily to provide short-circuit protection for low-current industrial electrical circuits, machinery and control equipment.
What is the rated current of the M304P-D0.5?
The M304P-D0.5 has a rated current of 0.5 A.
What type of tripping characteristic does the M304P-D0.5 use?
The breaker uses a D magnetic-only tripping characteristic, providing short-circuit protection without the conventional thermal overload trip element of a thermal-magnetic MCB.
How many poles does the M304P-D0.5 have?
The M304P-D0.5 is a four-pole circuit breaker with all four poles protected.
What is the breaking capacity of the ABB M304P-D0.5?
The M304P-D0.5 has a 25 kA short-circuit breaking capacity, providing high fault-current protection for demanding industrial applications.
Trusted Industrial Circuit Protection from ABB
ABB M300P magnetic-only miniature circuit breakers are designed for dependable short-circuit protection in industrial installations, combining robust electrical performance with compact modular construction for machinery, control and distribution applications.
