2CCF019967R0001 ABB S804S-K4 High Performance MCB 50 kA 4P Type K 4 A

Why Choose the ABB S804S-K4 High Performance MCB?

The ABB S804S-K4 is a high-performance 4-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits where a high breaking capacity is required. As part of the ABB S800S high-performance MCB series, it combines a K tripping characteristic with robust circuit protection for demanding industrial, commercial and electrical distribution applications.

The S804S-K4 provides thermal overload protection together with rapid electromagnetic short-circuit protection. Its Type K characteristic is particularly suitable for circuits containing motors, transformers and other equipment that can produce functional peak or starting currents, helping to minimise unwanted tripping during normal operation while maintaining effective overcurrent protection.

With a rated current of 4 A, four protected poles and a breaking capacity of 50 kA, the S804S-K4 provides dependable protection for demanding multipole electrical systems. Its four-pole configuration allows simultaneous switching and protection of four conductors, making it well suited to industrial control panels, machinery, automation equipment and power distribution installations.

Key Advantages

• High-performance 4-pole miniature circuit breaker for demanding electrical installations.
• 4 A rated current with K tripping characteristic.
• 50 kA breaking capacity for systems with high prospective fault currents.
• Designed to protect circuits against both overload and short-circuit conditions.
• Type K characteristic is suitable for loads with functional peak or starting currents.
• Four-pole configuration enables simultaneous switching and protection of four conductors.
• High-performance design is suitable for demanding industrial distribution systems.
• Suitable for machinery, control panels, automation equipment and electrical distribution applications.

Key Features

• ABB S800S high-performance MCB series.
• 4-pole configuration.
• 4 A rated current.
• Type K tripping characteristic.
• 50 kA breaking capacity.
• Thermal overload protection.
• Electromagnetic short-circuit protection.
• High-performance circuit breaker design for demanding fault levels.
• Suitable for circuits with functional peak and starting currents.
• Four-pole construction for multipole circuit protection.
• Part of the ABB S800 circuit protection platform.
• Designed for demanding commercial and industrial applications.

High-Performance Circuit Protection for Industrial Systems

The ABB S800S range is engineered for circuits where high short-circuit breaking capacity and dependable overload protection are essential. The S804S-K4 helps safeguard cables, equipment and electrical distribution systems against potentially damaging overcurrent conditions while providing the high fault-interruption performance required in demanding installations.

Its K characteristic makes the breaker particularly useful for electrical loads where temporary functional peak currents can occur during normal operation. Combined with its four-pole construction and 50 kA breaking capacity, the S804S-K4 provides effective protection for machinery, transformer circuits, control equipment and demanding multipole electrical distribution applications.

Typical Applications

• Four-pole industrial electrical circuits.
• Three-phase and neutral circuit protection.
• Motor and machinery circuits.
• Transformer protection applications.
• Industrial control and auxiliary circuits.
• Electrical distribution and control panels.
• Manufacturing and automation equipment.
• Commercial and industrial installations requiring high short-circuit breaking capacity.