2CDS272447R0337 ABB S202MTR-K4 MCB 10 kA 2P Type K 4 A

Why Choose the ABB S202MTR-K4 MCB?

The ABB S202MTR-K4 is a high-performance two-pole miniature circuit breaker (MCB) designed to provide reliable overcurrent and short-circuit protection in DC and traction electrical applications. Identified by ABB order code 2CDS272447R0337, this device combines a 4 A rated current, Type K tripping characteristic and 10 kA short-circuit breaking capacity.

As part of ABB's DC / Traction MCB range, the S202MTR-K4 is engineered for circuits where dependable protection and controlled tripping are essential. Its K characteristic is particularly suited to circuits with loads that can produce relatively high starting or inrush currents, helping minimise unwanted tripping while maintaining effective protection against overloads and short circuits.

The two-pole configuration allows simultaneous switching and protection of two conductors, while the compact modular format supports straightforward installation in electrical distribution and control equipment. ABB's established miniature circuit breaker technology makes the S202MTR-K4 suitable for demanding industrial, transportation and DC power applications.

Key Advantages

• High-performance two-pole miniature circuit breaker for circuit protection.
• 4 A rated current for low-current electrical circuits.
• Type K tripping characteristic suitable for loads with elevated starting currents.
• 10 kA short-circuit breaking capacity for robust fault protection.
• Two-pole design provides coordinated switching and protection.
• Compact modular construction for integration into electrical distribution equipment.

Key Features

• ABB S202MTR-K4 miniature circuit breaker.
• 2-pole configuration.
• 4 A rated current.
• K tripping characteristic.
• 10 kA breaking capacity.
• Designed for DC / traction circuit protection.
• Thermal-magnetic overcurrent protection.
• Modular format suitable for electrical distribution and control assemblies.

Reliable Protection for DC and Traction Circuits

Miniature circuit breakers protect electrical conductors and connected equipment by automatically interrupting current when an overload or short circuit occurs. Thermal protection responds to sustained overload conditions, while magnetic operation provides rapid interruption of high fault currents.

The Type K characteristic of the ABB S202MTR-K4 makes it particularly useful where equipment can draw increased current during starting or energisation. Combined with its 10 kA breaking capacity and two-pole arrangement, this provides dependable circuit protection for demanding DC, traction and industrial electrical systems.

Typical Applications

• DC electrical distribution systems.
• Railway and traction electrical equipment.
• Industrial control panels and switchboards.
• Circuits with elevated starting or inrush currents.
• Machinery and automation electrical systems.
• Power distribution and auxiliary control circuits.