2CDA383799R0011 ABB M303P-D1 MCB 25kA 3P D 1A Magnetic

Why Choose the ABB M303P-D1 Magnetic Circuit Breaker?

The ABB M303P-D1 is a compact three-pole magnetic circuit breaker designed to provide short-circuit protection in electrical circuits. Part of ABB's S300P circuit protection range, it combines a low 1 A rated current with high short-circuit interruption capability for demanding industrial electrical and control applications.

Featuring a D characteristic and 25 kA short-circuit breaking capacity, the M303P-D1 is suited to appropriately engineered circuits where comparatively high instantaneous starting or inrush currents may occur. Its magnetic operating principle provides rapid response to short-circuit currents without the thermal overload characteristic of a conventional thermal-magnetic miniature circuit breaker.

The three-pole configuration provides coordinated switching and magnetic protection across three conductors. Its combination of a 1 A rating, D characteristic and high breaking capacity makes the M303P-D1 particularly relevant to three-phase industrial control and equipment applications requiring dedicated short-circuit protection.

Key Advantages

• Dedicated magnetic short-circuit protection for electrical circuits.
• 1 A rated current for appropriately designed low-current applications.
• D characteristic suited to circuits with comparatively high instantaneous starting currents.
• 25 kA short-circuit breaking capacity for demanding fault-current conditions.
• Three-pole configuration provides coordinated switching and protection across three conductors.
• Suitable for integration into industrial electrical control and equipment assemblies.

Key Features

• ABB M303P magnetic circuit breaker.
• 1 A rated current.
• Three poles (3P).
• D characteristic.
• 25 kA short-circuit breaking capacity.
• Magnetic operating principle for short-circuit protection.
• Designed for modular electrical distribution and control applications.
• ABB order code 2CDA383799R0011 for precise product identification.

High-Capacity Three-Pole Magnetic Protection

The ABB M303P-D1 uses magnetic operation to respond rapidly when current rises into its instantaneous trip region during a short-circuit condition. This makes it suitable for applications where dedicated magnetic protection is required rather than the combined thermal and magnetic protection provided by conventional thermal-magnetic miniature circuit breakers.

Its D characteristic accommodates comparatively high instantaneous currents associated with the normal starting behaviour of suitable equipment. Combined with its 1 A current rating, three-pole configuration and 25 kA breaking capacity, the M303P-D1 provides a compact short-circuit protection solution for appropriately coordinated three-phase industrial circuits.

Typical Applications

• Three-phase industrial electrical control panels.
• Machinery and automation systems.
• Low-current circuits requiring dedicated magnetic short-circuit protection.
• Equipment with comparatively high instantaneous starting currents.
• Industrial control and auxiliary circuits.
• Three-pole circuits requiring high short-circuit interruption capability.