2CCS863002R0081 ABB S803S-D8-R 8A 3-Pole Type D 50kA MCB

Why Choose the ABB S803S-D8-R High-Performance MCB?

The ABB S803S-D8-R is a high-performance three-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in demanding electrical distribution systems. As part of the ABB S800S high-performance circuit breaker range, it combines a rated current of 8 A, Type D tripping characteristic and high short-circuit performance for industrial machinery, control and power-distribution applications.

The S803S-D8-R uses thermal and electromagnetic tripping mechanisms to protect conductors and connected equipment against sustained overloads and short-circuit faults. Its current-limiting design rapidly interrupts high fault currents, helping reduce thermal and electrodynamic stresses on downstream equipment while supporting dependable operation in installations with high prospective fault levels.

With a three-pole configuration, 8 A rated current and Type D characteristic, the S803S-D8-R is particularly suited to circuits containing equipment with relatively high starting or inrush currents. Its 50 kA short-circuit breaking capacity provides robust protection for demanding industrial and commercial electrical systems.

Key Advantages

• High-performance three-pole miniature circuit breaker for demanding electrical installations.
• 8 A rated current for suitable control, machinery and distribution circuits.
• Type D tripping characteristic suited to loads with high starting or inrush currents.
• High 50 kA short-circuit breaking capacity for installations with substantial prospective fault currents.
• Thermal and electromagnetic tripping provides overload and short-circuit protection.
• Current-limiting technology helps minimise fault energy and stress on connected equipment.
• Compact modular construction supports efficient integration into electrical distribution assemblies.
• Designed for professional industrial and commercial circuit-protection applications.

Key Features

• ABB S800S high-performance MCB series.
• 3-pole configuration.
• 8 A rated current.
• Type D tripping characteristic.
• 50 kA short-circuit breaking capacity.
• Thermal overload and electromagnetic short-circuit tripping.
• Current-limiting circuit protection technology.
• Suitable for circuits with elevated equipment starting currents.
• Compact modular format for electrical distribution assemblies.
• Designed in accordance with IEC/EN 60947-2.

High-Performance Protection for High-Inrush Loads

The ABB S800S range is engineered for electrical installations requiring high short-circuit performance and dependable protection against electrical faults. The S803S-D8-R automatically disconnects the protected circuit when overload or short-circuit conditions occur, helping safeguard conductors, machinery and downstream electrical equipment.

Its Type D characteristic is intended for applications where loads can produce substantial temporary starting currents without representing a fault condition. This makes the S803S-D8-R particularly useful for suitable transformers, motors, industrial machinery and other inductive equipment while retaining effective overload and short-circuit protection.

Typical Applications

• Industrial electrical distribution systems.
• Three-phase machinery and equipment circuits.
• Motor and inductive-load circuits.
• Transformer and high-inrush load protection.
• Control panels and switchgear assemblies.
• Industrial automation and manufacturing equipment.
• Commercial electrical distribution installations.
• High fault-level installations requiring high-performance circuit protection.