ABB S304P-B25 MCB – 4P – B Curve – 25A – 25kA

Why Choose the ABB S304P-B25 Miniature Circuit Breaker?

The ABB S304P-B25 is a compact and high-performance miniature circuit breaker (MCB) designed to provide reliable protection against overloads and short circuits in industrial and electrical distribution systems. As part of the ABB System pro M compact S300P series, it combines high breaking capacity with practical DIN-rail installation for professional low-voltage applications.

This circuit breaker features a B tripping characteristic, providing fast protection for circuits with low inrush currents and general electrical loads. The 4-pole configuration provides four protected poles without a neutral pole, making the device suitable for multi-pole AC circuit protection where a switched neutral is not required.

With a rated current of 25 A, a 25 kA rated breaking capacity and an AC supply, the S304P-B25 is suited to industrial installations, control circuits and electrical distribution applications where dependable circuit protection and compact panel integration are required.

Key Advantages

• Compact miniature circuit breaker designed for industrial and electrical distribution applications.
• 25 A rated current for reliable circuit protection.
• B tripping characteristic for general electrical loads with low inrush currents.
• 25 kA rated breaking capacity for high-level short-circuit protection.
• 4P configuration without neutral for multi-pole AC circuit protection.
• DIN-rail mounting for straightforward installation in distribution boards and control panels.
• Part of the ABB System pro M compact S300P range for professional circuit protection.

Key Features

• ABB System pro M compact S300P series.
• 25 A rated current.
• B tripping characteristic.
• 4-pole configuration.
• No neutral pole.
• 25 kA rated breaking capacity.
• AC supply.
• DIN-rail mounting for efficient panel installation.
• Compact modular design for electrical distribution equipment.
• Reliable overload and short-circuit protection.

Reliable Circuit Protection for Industrial Installations

Miniature circuit breakers such as the ABB S304P-B25 protect electrical circuits by automatically disconnecting the supply when an overload or short circuit reaches a level that could otherwise damage conductors and connected equipment. The B tripping characteristic provides rapid protection for circuits with low starting currents and standard electrical loads.

The S300P series is designed for demanding industrial and electrical installations, combining high breaking performance with a compact modular format. The S304P-B25's four-pole arrangement provides flexible multi-pole circuit protection where a neutral switching pole is not required.

Typical Applications

• Industrial electrical distribution systems.
• Lighting and general electrical circuits.
• Automation and control circuits.
• Industrial machinery and equipment.
• Control panels and electrical switchboards.
• Commercial and industrial building installations.
• Low-voltage AC circuit protection applications.