ABB S304P-Z4 MCB – 4P – Z Curve – 4A – 25kA

Why Choose the ABB S304P-Z4 Miniature Circuit Breaker?

The ABB S304P-Z4 is a robust and high-performance miniature circuit breaker (MCB) designed to provide reliable protection against overloads and short circuits in industrial electrical installations. As part of the ABB System pro M compact S300P series, it combines high breaking capacity with dependable circuit protection for demanding electrical distribution applications.

This circuit breaker features a Z tripping characteristic, providing sensitive circuit protection for applications requiring fast disconnection at lower overcurrent levels. Its 4-pole configuration provides protection across four conductors without a neutral pole, while the compact modular design enables straightforward installation in distribution boards and control panels.

With a rated current of 4 A and a rated breaking capacity of 25 kA, the S304P-Z4 provides dependable protection for industrial circuits requiring a high level of short-circuit interruption performance. Its DIN-rail mounting and compatibility with the System pro M compact accessory range simplify installation and system integration.

Key Advantages

• High-performance miniature circuit breaker for industrial electrical installations.
• 4 A rated current for protection of sensitive electrical circuits and equipment.
• Z tripping characteristic suitable for sensitive electronic and control circuits.
• 25 kA rated breaking capacity for high-level short-circuit protection.
• 4-pole configuration for multi-conductor circuit protection without neutral switching.
• DIN-rail mounting for straightforward installation in electrical distribution equipment.

Key Features

• ABB System pro M compact S300P series.
• S304P-Z4 miniature circuit breaker.
• 4 A rated current.
• Z tripping characteristic.
• 25 kA rated breaking capacity.
• 4P configuration without neutral.
• AC electrical supply.
• DIN-rail mounting for modular electrical installations.
• Integrated trip indication for clear identification of tripping events.
• Compatible with System pro M compact accessories.

Reliable Circuit Protection for Industrial Installations

Miniature circuit breakers such as the ABB S304P-Z4 protect electrical circuits by interrupting current when an overload or short-circuit condition occurs. The Z characteristic provides sensitive protection where connected equipment requires rapid response to overcurrent conditions.

The S300P series is designed for industrial electrical installations where reliable protection and high short-circuit interruption performance are required. The S304P-Z4 combines four protected poles in a compact modular device, making it suitable for multi-phase distribution and control circuits where a neutral pole is not required.

Typical Applications

• Industrial electrical distribution systems.
• Electronic control circuits and automation equipment.
• Control panels and industrial switchboards.
• Precision electrical equipment protection.
• Factory automation and production equipment.
• Commercial and industrial low-voltage installations.