2CCG000465R0001 ABB S403P-K16 MCB 40 kA 3P K 16 A

Why Choose the ABB S403P-K16 Miniature Circuit Breaker?

The ABB S403P-K16 is a high-performance three-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overload and short-circuit conditions. Part of the ABB S400P range for the SMISSLINE TP plug-in system, it combines a 16 A rated current, K tripping characteristic and high short-circuit breaking capacity for demanding industrial and commercial electrical distribution applications.

The S403P-K16 provides coordinated protection across three poles and is designed for direct connection to the SMISSLINE TP plug-in system. Its modular plug-in architecture supports efficient installation, replacement and expansion while maintaining dependable circuit protection within professional electrical distribution assemblies.

With a rated current of 16 A and an ultimate short-circuit breaking capacity (Icu) of 40 kA at 230 V and 400 V according to IEC 60947-2, the S403P-K16 provides robust protection for three-phase circuits where elevated starting or inrush currents may occur. The breaker occupies three modules, has an installation depth of 91 mm and weighs approximately 0.345 kg.

Key Advantages

• High-performance 16 A miniature circuit breaker for overload and short-circuit protection.
• 40 kA Icu breaking capacity at 230 V and 400 V for demanding fault-current conditions.
• K tripping characteristic suited to appropriate circuits with elevated starting and inrush currents.
• Three-pole configuration provides coordinated protection across three conductors.
• Designed specifically for the ABB SMISSLINE TP plug-in system.
• Compact three-module construction supports efficient installation and system expansion.

Key Features

• ABB S400P miniature circuit breaker series.
• 16 A rated current.
• 3-pole configuration with three protected poles.
• K characteristic according to IEC/EN 60947-2.
• 40 kA Icu at both 230 V and 400 V.
• 50–60 Hz operating frequency.
• 440 V rated insulation voltage.
• Energy limiting class 3.
• Direct plug-in integration with the SMISSLINE TP system.

Reliable Circuit Protection for SMISSLINE TP Systems

Miniature circuit breakers such as the ABB S403P-K16 protect cables and connected electrical circuits by automatically interrupting current when overload or short-circuit conditions occur. Its K tripping characteristic makes the breaker suitable for appropriate circuits where elevated transient starting currents may occur while dependable overcurrent protection remains essential.

The S403P-K16 combines three-pole protection with ABB's SMISSLINE TP plug-in architecture. This provides a compact and flexible solution for professional three-phase distribution assemblies where straightforward installation, efficient servicing, high fault-breaking capability and future system expansion are required.

Typical Applications

• ABB SMISSLINE TP electrical distribution systems.
• Industrial control and automation panels.
• Commercial and industrial three-phase distribution boards.
• Three-phase machinery and equipment circuits.
• Circuits requiring coordinated three-pole protection and isolation.
• Equipment circuits where elevated starting or inrush currents may occur.