2CCS862001R0487 ABB S802S-K20 High Performance MCB 50 kA 2P Type K 20 A

Why Choose the ABB S802S-K20 High Performance MCB?

The ABB S802S-K20 is a high-performance 2-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in demanding electrical installations. Part of the ABB S800S high-performance circuit breaker range, this model combines a rated current of 20 A with a Type K tripping characteristic, making it particularly suitable for circuits supplying inductive loads and equipment with elevated starting currents.

The S802S-K20 is a current-limiting circuit breaker incorporating thermal and electromagnetic tripping mechanisms. The thermal mechanism provides protection against sustained overload conditions, while the electromagnetic mechanism responds rapidly to short circuits. With a maximum short-circuit breaking capacity of 50 kA, the S802S-K20 provides robust protection for installations where high prospective fault currents may occur.

Its two-pole configuration allows simultaneous protection and isolation of two conductors, while the modular S800 construction supports straightforward installation in industrial distribution boards, machinery and control panels. The Type K characteristic provides greater tolerance of short-duration starting currents than general-purpose characteristics, making the breaker particularly useful for appropriate motor, transformer and other inductive-load circuits.

Key Advantages

• High-performance 2-pole miniature circuit breaker for demanding electrical protection applications.
• 20 A rated current for appropriately rated circuits and loads.
• Type K tripping characteristic suited to equipment with elevated starting and inrush currents.
• High 50 kA short-circuit breaking capacity.
• Combined thermal and electromagnetic protection against overloads and short circuits.
• Current-limiting design helps reduce the damaging effects of high fault currents.
• Suitable for industrial machinery, motor circuits and electrical distribution systems.
• Designed for integration with the extensive ABB S800 accessory range.

Key Features

• ABB S800S high-performance MCB series.
• 2-pole configuration.
• 20 A rated current.
• Type K tripping characteristic.
• 50 kA short-circuit breaking capacity.
• Thermal trip mechanism for overload protection.
• Electromagnetic trip mechanism for short-circuit protection.
• High current-limiting capability for demanding fault conditions.
• Suitable for circuits with elevated equipment starting currents.
• Modular construction for electrical distribution and control panels.
• Compatible with ABB S800 series auxiliary and signalling accessories.

Reliable Protection for Circuits with High Starting Currents

The ABB S802S-K20 combines thermal overload protection with fast electromagnetic short-circuit protection. During a sustained overload, the thermal trip mechanism disconnects the circuit before excessive current can cause damaging conductor or equipment temperatures, while the electromagnetic mechanism provides rapid interruption during severe short-circuit faults.

Its Type K characteristic is designed to accommodate comparatively high short-duration starting currents, helping reduce unwanted tripping when suitable inductive loads are energised. Combined with the S800S range's high breaking capacity and current-limiting performance, this makes the S802S-K20 a dependable protection device for demanding industrial power distribution and machinery applications.

Typical Applications

• Industrial machinery and automation systems.
• Motor and inductive-load circuits.
• Transformer and equipment supply circuits with elevated inrush currents.
• Electrical control panels and switchboards.
• Industrial power distribution systems.
• Commercial installations requiring high-performance circuit protection.