2CCS864002R1467 ABB S804S-UCK16-R 4-Pole 16 A Type K 50 kA Miniature Circuit Breaker

Why Choose the ABB S804S-UCK16-R High-Performance Miniature Circuit Breaker?

The ABB S804S-UCK16-R is a high-performance 4-pole miniature circuit breaker (MCB) designed to provide dependable overload and short-circuit protection in demanding electrical installations. Part of the ABB S800S high-performance circuit breaker series, it combines a 16 A rated current, Type K tripping characteristic and high short-circuit breaking capability for industrial distribution and equipment circuits.

The S804S-UCK16-R protects circuits against sustained overloads and severe short-circuit faults using thermal and electromagnetic tripping mechanisms. Its current-limiting design helps restrict the fault energy passed through to the installation, reducing thermal and electrodynamic stresses on conductors, connected equipment and downstream components.

With its 4-pole configuration, 16 A current rating and 50 kA short-circuit breaking capacity, the S804S-UCK16-R provides robust protection where high prospective fault currents may occur. The Type K characteristic is particularly suited to inductive equipment with elevated starting currents, while the R version provides ring-terminal connections.

Key Advantages

• High-performance 4-pole miniature circuit breaker for demanding electrical installations.
• 16 A rated current with Type K tripping characteristic.
• High 50 kA short-circuit breaking capacity.
• Ring-terminal connection version for secure conductor termination.
• Type K characteristic suited to motors, transformers and other inductive loads.
• Provides dependable overload and short-circuit protection.
• Current-limiting operation helps reduce fault energy and stress on downstream equipment.

Key Features

• ABB S800S high-performance circuit breaker series.
• 4-pole configuration.
• 16 A rated current.
• Type K tripping characteristic.
• 50 kA short-circuit breaking capacity.
• Ring-terminal connection.
• Thermal release for sustained overload protection.
• Electromagnetic release for rapid short-circuit interruption.
• Current-limiting construction for effective fault protection.
• Suitable for demanding industrial circuits with elevated normal starting currents.

Reliable Protection for Inductive and High-Inrush Loads

The ABB S804S-UCK16-R combines thermal overload protection with rapid electromagnetic short-circuit interruption. Sustained overcurrents activate the thermal protection mechanism, while severe short-circuit currents trigger fast electromagnetic operation, helping protect conductors and connected equipment from damaging electrical fault conditions.

Its Type K characteristic is well suited to applications where inductive equipment can produce elevated starting currents during normal operation. This makes the S804S-UCK16-R particularly useful for motors, transformers and similar loads, providing tolerance of legitimate start-up currents while maintaining dependable protection against genuine overload and short-circuit faults.

Typical Applications

• Industrial motor circuits.
• Transformer and inductive-load protection.
• Industrial machinery and automation systems.
• Electrical distribution and control panels.
• Four-pole equipment circuits.
• Loads with elevated normal starting currents.
• Installations with high prospective short-circuit currents.