2CCS894001R0501 ABB S804N-D50 MCB 36 kA 4P Type D 50 A

Why Choose the ABB S804N-D50 Miniature Circuit Breaker?

The ABB S804N-D50 is a high-performance 4-pole miniature circuit breaker (MCB) designed to protect electrical installations against overloads and short circuits. As part of the ABB S800N high-performance circuit breaker series, it combines a rated current of 50 A, Type D tripping characteristic and a high 36 kA breaking capacity for demanding commercial and industrial applications.

The Type D characteristic is particularly suited to circuits with high starting and inrush currents, including motors, transformers and other inductive equipment. Its thermal-magnetic operating principle provides dependable overload and short-circuit protection, while the four-pole configuration enables coordinated protection and switching across four conductors in suitable electrical systems.

With its 50 A rated current, 4-pole configuration and 36 kA short-circuit breaking capability, the S804N-D50 is well suited to demanding distribution and equipment circuits where robust fault protection is required. Its DIN-rail format supports straightforward integration into electrical switchboards, distribution assemblies and industrial control panels.

Key Advantages

• High-performance 4-pole miniature circuit breaker for demanding electrical installations.
• 50 A rated current for reliable higher-current circuit and equipment protection.
• Type D tripping characteristic suitable for equipment with high starting and inrush currents.
• High 36 kA short-circuit breaking capacity.
• Thermal-magnetic protection against overloads and short circuits.
• DIN-rail mounting simplifies integration into industrial distribution and control panels.

Key Features

• ABB S800N high-performance MCB series.
• 4-pole configuration.
• 50 A rated current.
• Type D trip characteristic.
• 36 kA short-circuit breaking capacity.
• Thermal overload protection.
• Electromagnetic short-circuit protection.
• Suitable for circuits with high transient starting currents.
• DIN-rail mounting for modular electrical installations.
• Designed for demanding commercial and industrial circuit protection.

High-Performance Circuit Protection for Industrial Installations

High-performance miniature circuit breakers such as the ABB S804N-D50 automatically disconnect circuits during overload and short-circuit conditions. Thermal protection responds to sustained overcurrents, while the electromagnetic mechanism provides rapid operation during severe short-circuit faults, helping protect cables, machinery and electrical installations.

The S800N range is designed for applications requiring greater fault-current capability than conventional miniature circuit breakers. The Type D characteristic of the S804N-D50 provides increased tolerance of short-duration inrush currents, making it particularly suitable for motors, transformers and other inductive equipment that can draw substantial current during energisation.

Typical Applications

• Industrial electrical distribution systems.
• Four-pole distribution and equipment circuits.
• Motor and machinery circuits with high starting currents.
• Transformer and inductive-load circuits.
• Industrial control panels and automation systems.
• Commercial and industrial installations requiring high breaking capacity.