Why Choose the ABB S203M-D6NA Miniature Circuit Breaker?
The ABB S203M-D6NA is a high-performance 3P+N miniature circuit breaker (MCB) from the ABB System pro M compact S200M range. Designed for reliable circuit protection in residential, commercial and industrial installations, it provides dependable protection against overloads and short circuits.
This ABB miniature circuit breaker is current limiting and uses two separate tripping mechanisms: a delayed thermal trip for overload protection and an electromechanical trip for short circuit protection. Its compact DIN rail format makes it suitable for modern distribution boards, switchgear assemblies and industrial control panels.
With a 6 A rated current, Type D tripping characteristic, 3P+N configuration and 10 kA breaking capacity, the S203M-D6NA is particularly suitable for circuits with high inrush currents, including transformers, motors, power supplies and industrial automation equipment.
Key Advantages
- High quality ABB System pro M compact S200M miniature circuit breaker.
- 3P+N configuration for three-phase circuits with neutral switching.
- Type D tripping curve suitable for high inrush current applications.
- 6 A rated current for industrial and control circuit protection.
- 10 kA breaking capacity for robust short circuit protection.
- Current limiting design helps reduce stress during fault conditions.
Key Features
- ABB S200M Series miniature circuit breaker.
- Model: S203M-D6NA.
- Manufacturer Part Number: 2CDS273103R0061.
- Rated current: 6 A.
- Type D tripping characteristic.
- 3P+N pole configuration.
- 10 kA rated breaking capacity.
- Compatible with ABB System pro M compact accessories.
Reliable Protection for High Inrush Current Circuits
The ABB S203M-D6NA protects electrical circuits by disconnecting the supply when overload or short circuit conditions occur. The thermal mechanism responds to sustained overloads, while the electromagnetic trip provides fast interruption under short circuit fault conditions.
Type D miniature circuit breakers are designed for applications where high starting currents are expected. This makes the S203M-D6NA suitable for transformer-fed circuits, motor loads, industrial power supplies and automation equipment where nuisance tripping must be avoided.
Typical Applications
- Industrial control panels.
- Three-phase distribution boards.
- Transformer and power supply circuits.
- Motor control and automation systems.
- Machine building and OEM equipment.
- Commercial and industrial electrical installations.
