2CCS862017R0487 ABB S802U-K20 High Performance MCB 50 kA 2P K 20 A UL 489

Why Choose the ABB S802U-K20 UL 489 High Performance MCB?

The ABB S802U-K20 is a high-performance 2-pole miniature circuit breaker (MCB) designed to provide dependable overload and short-circuit protection in demanding electrical distribution and control applications. Part of ABB's S800 high-performance circuit breaker platform, this model combines a rated current of 20 A with a K tripping characteristic and UL 489 classification.

The S802U-K20 uses thermal and electromagnetic tripping mechanisms to protect conductors and connected equipment. The thermal trip responds to sustained overload conditions, while the electromagnetic mechanism provides rapid interruption during short-circuit faults. Its high 50 kA short-circuit breaking capacity supports use in installations where substantial prospective fault currents require high-performance circuit protection.

The K characteristic is suited to appropriately designed circuits supplying equipment with elevated starting or inrush currents, including motor and inductive loads. Combined with its two-pole configuration, high breaking capacity and modular construction, the S802U-K20 provides robust circuit protection for industrial machinery, automation equipment and electrical distribution systems requiring a UL 489 circuit breaker.

Key Advantages

• High-performance 2-pole miniature circuit breaker for demanding electrical installations.
• 20 A rated current for appropriately rated circuits and connected equipment.
• K tripping characteristic suitable for circuits with elevated starting and inrush currents.
• High 50 kA short-circuit breaking capacity.
• UL 489 circuit breaker classification.
• Combined thermal and electromagnetic protection against overloads and short circuits.
• Current-limiting operation helps reduce the effects of severe short-circuit faults.
• Two-pole construction provides linked switching and protection across two conductors.

Key Features

• ABB S802U high-performance MCB.
• 2-pole configuration.
• 20 A rated current.
• K tripping characteristic.
• 50 kA short-circuit breaking capacity.
• UL 489 classification.
• Thermal trip mechanism for overload protection.
• Electromagnetic trip mechanism for rapid short-circuit protection.
• Current-limiting design for demanding fault conditions.
• Suitable for appropriately designed circuits with elevated equipment starting currents.
• Modular construction for electrical distribution and control equipment.

Reliable Protection for High Starting Current Loads

The ABB S802U-K20 combines thermal overload protection with rapid electromagnetic short-circuit protection. During a sustained overload, the thermal trip responds to excessive current over time, while the electromagnetic mechanism provides fast disconnection when a sufficiently high short-circuit current occurs.

Its K characteristic is particularly suited to appropriately engineered circuits where connected equipment can draw elevated short-duration starting currents. Together with the 50 kA breaking capacity and current-limiting performance of the ABB S800 platform, the S802U-K20 provides dependable protection for demanding industrial applications requiring UL 489 circuit protection.

Typical Applications

• Industrial machinery and automation systems.
• Motor and other inductive-load circuits.
• Circuits with elevated starting or inrush currents.
• Industrial electrical distribution systems.
• Electrical control panels and switchboards.
• Applications requiring a UL 489 circuit breaker.
• Installations requiring high short-circuit breaking capacity.