2CCS861001R1487 ABB S801S-UCK20 MCB 50 kA 1P Type K 20 A

Why Choose the ABB S801S-UCK20 High Performance Circuit Breaker?

The ABB S801S-UCK20 is a high-performance single-pole miniature circuit breaker (MCB) designed to provide dependable overload and short-circuit protection in demanding electrical installations. As part of the ABB S800S high-performance circuit breaker series, it combines a 20 A rated current, Type K tripping characteristic and high 50 kA short-circuit breaking capacity for industrial, commercial and machinery applications.

The S801S-UCK20 provides thermal protection against sustained overload conditions together with rapid electromagnetic protection against short-circuit currents. Its high-performance current-limiting construction helps interrupt severe electrical faults quickly, reducing the thermal and mechanical stresses imposed on conductors, equipment and downstream electrical components.

With its Type K characteristic, the S801S-UCK20 is particularly suitable for circuits supplying equipment with elevated starting currents, including motors, transformers and other inductive loads. Its 20 A rating and robust S800S construction make it well suited to industrial distribution boards, machine control panels and installations requiring reliable high-capacity circuit protection.

Key Advantages

• High-performance single-pole miniature circuit breaker for demanding electrical protection.
• 20 A rated current with Type K tripping characteristic.
• High 50 kA short-circuit breaking capacity.
• Type K characteristic is suitable for equipment with elevated starting currents.
• Thermal tripping provides dependable overload protection.
• Electromagnetic tripping enables rapid protection against short circuits.
• Current-limiting design helps reduce damaging fault energy.
• Suitable for industrial machinery, motors, transformers and electrical distribution systems.

Key Features

• ABB S800S high-performance circuit breaker series.
• 1-pole configuration.
• 20 A rated current.
• Type K tripping characteristic.
• 50 kA short-circuit breaking capacity.
• Thermal overload protection.
• Electromagnetic short-circuit protection.
• High current-limiting performance for demanding installations.
• Compact modular construction for electrical distribution and control equipment.

High-Performance Circuit Protection for Demanding Installations

The ABB S800S range is engineered for electrical installations requiring high short-circuit performance and reliable circuit protection. The S801S-UCK20 automatically disconnects the protected circuit during overload or short-circuit conditions, helping protect conductors, machinery and electrical equipment against potentially damaging fault currents.

Its Type K tripping characteristic provides increased tolerance of the starting currents associated with motors, transformers and other inductive equipment while retaining effective protection against genuine electrical faults. Combined with the S800S platform's high breaking capacity and current-limiting performance, this makes the S801S-UCK20 suitable for demanding industrial power and machine-control applications.

Typical Applications

• Industrial machinery and automation systems.
• Motor circuit protection.
• Transformer and inductive-load circuits.
• Electrical distribution and control panels.
• Industrial power distribution systems.
• Machine-building and OEM equipment.
• Circuits with elevated starting or inrush currents.
• Installations requiring high short-circuit breaking capacity.