2CCS881001R0557 ABB S801C-K40 Miniature Circuit Breaker 40 A 1P Type K 25 kA

Why Choose the ABB S801C-K40 Miniature Circuit Breaker?

The ABB S801C-K40 is a high-performance single-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits where a high breaking capacity is required. As part of the ABB S800C high-performance circuit breaker range, it provides robust circuit protection for demanding commercial and industrial electrical installations.

This MCB features a Type K tripping characteristic, making it particularly suitable for circuits supplying motors and other equipment with elevated starting or inrush currents. The S800C range provides current-limiting protection and is designed for applications where reliable fault interruption, selectivity or back-up protection is important.

With a rated current of 40 A, a single-pole configuration and a rated ultimate short-circuit breaking capacity of 25 kA, the S801C-K40 provides high-performance protection for industrial machinery and electrical distribution systems. Its compact 26.5 mm single-pole width and DIN rail mounting format enable straightforward integration into switchgear and control panels.

Key Advantages

• High-performance miniature circuit breaker for overload and short-circuit protection.
• 40 A rated current suitable for demanding commercial and industrial circuits.
• Type K tripping characteristic suited to loads with elevated starting and inrush currents.
• 25 kA rated ultimate short-circuit breaking capacity for installations with high prospective fault currents.
• Suitable for motor circuits, industrial machinery and electrical distribution systems.
• Compact 26.5 mm single-pole width for efficient panel installation.

Key Features

• ABB S800C high-performance MCB series.
• 40 A rated current.
• 1-pole configuration.
• Type K tripping characteristic.
• 25 kA rated ultimate short-circuit breaking capacity (Icu).
• 15 kA rated short-circuit breaking capacity (Icn).
• 500 V rated insulation voltage.
• 8 kV rated impulse withstand voltage.
• AC/DC circuit breaker design.
• Interchangeable cage terminal for secure conductor connection.
• DIN rail mounting for modular electrical installations.

High-Performance Circuit Protection

Miniature circuit breakers such as the ABB S801C-K40 automatically disconnect electrical circuits when excessive current occurs because of an overload or short circuit. The S800C range is designed for applications requiring high breaking capacity and current-limiting performance, helping protect electrical equipment and conductors when fault conditions occur.

The Type K characteristic makes the S801C-K40 particularly suitable for circuits supplying equipment with elevated starting currents. This makes it a practical choice for motors, machinery and other industrial loads where reliable protection must be combined with tolerance of normal start-up current.

Typical Applications

• Industrial electrical distribution systems.
• Motor circuits and industrial machinery.
• Machine control panels and automation equipment.
• Commercial electrical installations.
• Switchgear and distribution assemblies.
• Circuits requiring high short-circuit breaking capacity.