2CCS862001R0405 ABB S802S-B40 High Performance MCB 50kA 2P Type B 40A

Why Choose the ABB S802S-B40 High Performance MCB?

The ABB S802S-B40 is a high-performance two-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 current-limiting device combines a 40 A rated current, Type B tripping characteristic and high 50 kA short-circuit breaking capability.

The S802S-B40 uses thermal and electromagnetic tripping mechanisms to protect circuits against sustained overloads and short-circuit faults. Its Type B characteristic provides sensitive magnetic tripping for circuits where substantial normal starting or inrush currents are not expected, while current-limiting operation helps reduce electrical and thermal stresses during fault conditions.

With a rated current of 40 A, a 2-pole configuration and a short-circuit breaking capability of 50 kA, the S802S-B40 is designed for installations requiring dependable multi-pole protection and high fault-current performance. Its modular construction makes it suitable for professional distribution equipment, machinery and industrial control systems.

Key Advantages

• High-performance two-pole miniature circuit breaker for overload and short-circuit protection.
• 40 A rated current for demanding electrical distribution and equipment circuits.
• Type B tripping characteristic for circuits without substantial normal inrush currents.
• 50 kA short-circuit breaking capability for installations with high prospective fault currents.
• Thermal and electromagnetic mechanisms provide effective overcurrent protection.
• Current-limiting design helps reduce fault energy and electrical stresses on the installation.

Key Features

• ABB S800S high-performance MCB series.
• 2-pole configuration.
• 40 A rated current.
• Type B tripping characteristic.
• 50 kA short-circuit breaking capability.
• Thermal overload and electromagnetic short-circuit tripping mechanisms.
• Suitable for circuits where substantial normal starting currents are not expected.
• Current-limiting operation for enhanced protection during fault conditions.
• Rapid interruption of short-circuit currents.
• DIN rail mounted modular construction for professional electrical installations.

High-Performance Protection for Low-Inrush Circuits

Miniature circuit breakers such as the ABB S802S-B40 automatically disconnect protected circuits when excessive current occurs. The thermal tripping mechanism responds to sustained overload conditions, while the electromagnetic mechanism provides rapid operation during short circuits, helping protect conductors, connected equipment and electrical installations against damaging fault currents.

The Type B characteristic is suited to circuits where substantial normal starting currents are not expected. Combined with its two-pole configuration and the high breaking capability of the ABB S800S range, the S802S-B40 provides robust protection for demanding electrical distribution, control equipment and other commercial or industrial applications.

Typical Applications

• Industrial electrical distribution systems.
• Commercial distribution boards and switchgear.
• Machinery and industrial control panels.
• Circuits with relatively low normal inrush currents.
• Automation and equipment supply circuits.
• Electrical installations with high prospective fault currents.