2CCS864001R1635 ABB S804S-UCB63 63 A 4-Pole Type B High-Performance MCB 50 kA

Why Choose the ABB S804S-UCB63 High-Performance MCB?

The ABB S804S-UCB63 is a high-performance four-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in demanding electrical distribution systems. As part of the ABB S800S high-performance circuit breaker series, it combines high fault-current interruption capability with robust construction for industrial and commercial installations.

This circuit breaker features a Type B tripping characteristic, making it suitable for circuits where relatively low starting and inrush currents are expected. Its thermal and magnetic protection mechanisms provide dependable protection against sustained overloads and short-circuit faults, helping protect conductors, equipment and downstream electrical systems.

With a rated current of 63 A, a four-pole configuration and a breaking capacity of 50 kA, the S804S-UCB63 provides robust circuit protection for installations where high prospective fault currents may occur. Its four-pole construction enables coordinated protection and switching across four conductors in compatible electrical distribution systems.

Key Advantages

• High-performance four-pole miniature circuit breaker for demanding electrical installations.
• 63 A rated current for commercial and industrial circuit protection.
• Type B tripping characteristic suitable for circuits with relatively low inrush currents.
• High 50 kA breaking capacity for installations with significant prospective fault currents.
• Thermal and magnetic protection against overloads and short circuits.
• Four-pole construction provides coordinated circuit protection and switching.

Key Features

• ABB S800S high-performance MCB series.
• Four-pole configuration.
• 63 A rated current.
• Type B tripping characteristic.
• 50 kA breaking capacity.
• Thermal overload and magnetic short-circuit protection.
• High-performance modular construction for electrical distribution systems.
• Designed for demanding commercial and industrial circuit-protection applications.

Reliable Protection for Electrical Distribution Systems

Miniature circuit breakers such as the ABB S804S-UCB63 automatically disconnect protected circuits when excessive current occurs because of an overload or short circuit. Thermal protection responds to sustained overload conditions, while magnetic tripping provides rapid interruption when severe short-circuit currents occur.

The Type B characteristic is well suited to circuits where comparatively low inrush currents are expected during normal operation. Combined with the high breaking capacity of the S800S platform, this makes the S804S-UCB63 suitable for demanding power distribution, control and equipment-protection applications.

Typical Applications

• Industrial electrical distribution panels.
• Commercial electrical distribution systems.
• Control and automation panels.
• General-purpose electrical circuits.
• Circuits with relatively low starting or inrush currents.
• Electrical installations requiring high fault-current protection.