2CCF030061R0001 ABB S804S-UCK3 4-Pole Type K 3A 50kA High-Performance MCB

Why Choose the ABB S804S-UCK3 High-Performance MCB?

The ABB S804S-UCK3 is a high-performance 4-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in demanding electrical installations. Part of the established ABB S800S high-performance MCB series, this model combines a 3 A rated current, K tripping characteristic and an exceptionally high 50 kA breaking capacity.

The S804S-UCK3 is suited to applications where high prospective fault currents require greater short-circuit performance than conventional miniature circuit breakers can provide. Its K characteristic is particularly appropriate for circuits containing inductive loads such as motors, transformers, contactor coils and other equipment that can produce elevated starting or inrush currents during normal operation.

With four protected poles, the S804S-UCK3 enables simultaneous protection and switching across multipole circuits while retaining the robust construction associated with ABB’s S800 platform. ABB order code 2CCF030061R0001 identifies this specific 3 A Type K version within the S800 / S800P / S750 MCB product group.

Key Advantages

• High-performance 4-pole miniature circuit breaker for demanding electrical installations.
• 50 kA breaking capacity for systems with high prospective short-circuit currents.
• 3 A rated current for low-current industrial and control circuits.
• Type K tripping characteristic suited to loads with elevated starting or inrush currents.
• Provides combined overload and short-circuit protection.
• Four-pole construction supports simultaneous protection and isolation of multipole circuits.
• Suitable for motor, transformer, machinery and industrial control applications.
• Part of ABB’s proven S800 high-performance circuit protection platform.

Key Features

• ABB S800S high-performance MCB series.
• Four-pole circuit breaker configuration.
• 3 A rated current.
• K tripping characteristic.
• 50 kA short-circuit breaking capacity.
• Thermal-magnetic protection against overload and short-circuit conditions.
• K characteristic accommodates functional peak currents from suitable inductive loads.
• High breaking capacity for demanding industrial distribution systems.
• Designed for reliable protection of machinery, control and power circuits.

Reliable High-Performance Circuit Protection

The ABB S804S-UCK3 combines thermal overload protection with rapid magnetic short-circuit protection. Sustained overcurrents activate the thermal trip mechanism, while severe fault currents produce fast magnetic disconnection, helping protect conductors and connected equipment against damaging electrical and thermal stresses.

Its Type K characteristic makes the S804S-UCK3 particularly useful for inductive circuits that can experience elevated current during normal starting or energisation. Combined with its 50 kA breaking capacity, this provides robust protection for industrial systems where both functional inrush currents and substantial prospective fault currents must be considered.

Typical Applications

• Industrial motor and machinery circuits.
• Transformer protection circuits.
• Industrial control and auxiliary circuits.
• Automation and production equipment.
• Electrical control panels and distribution assemblies.
• Circuits containing inductive loads and functional inrush currents.
• Installations with high prospective short-circuit currents.
• Commercial and industrial electrical distribution systems.