ABB S203U-K4 4A 3-Pole 240 V Circuit Breaker Potential Transformer

ABB S203U-K4 4A 3-Pole 240 V Circuit Breaker — Part Number S203U-K4. This genuine ABB protection device is engineered for reliable, three-phase circuit protection in industrial panels and switchgear.

With a nominal current rating of 4 A, a 3-pole configuration, and a 240 V rated voltage, this circuit breaker provides precise protection in standard 3-phase power systems. Its compact, robust design is built to withstand the demands of modern automation environments while delivering consistent performance across varying load conditions.

• Current rating: 4 A (nominal)
• Poles: 3 (three-phase protection)
• Voltage rating: 240 V
• Part number: S203U-K4

Key benefits and differentiators:

• Exact trip coordination aligns with other protective devices in a 3-phase network, helping to isolate faults quickly and minimize equipment damage.
• Phase-balanced protection via a three-pole design ensures all live conductors are simultaneously disconnected during a fault, reducing arc flash risk and equipment wear.
• ABB engineering reliability backed by ABB's global support and supply chain, enabling easier sourcing and warranty coverage for critical infrastructure.
• Versatile integration suitable for control panels, motor control centers, and distribution boards in industrial settings that run on 240 V three-phase power.

Ideal use cases include motor-controlled conveyors, packaging lines, CNC machines, HVAC equipment, and other industrial automation setups where dependable, synchronized disconnection is essential. It’s particularly valuable in environments where space is at a premium and a dedicated 3P 240 V protection device is required.

Installation and compatibility tips: - Confirm that the panel or enclosure accommodates a 3-pole 240 V ABB device of the S203U-K4 family. - Use only compatible accessories and replacement parts from ABB to maintain protective coordination and warranty. - Maintain clear labeling of the protective device within the panel for safer maintenance and faster fault diagnosis.

Whether you’re upgrading an aging panel or building a new 3-phase distribution system, the ABB S203U-K4 4A 3-Pole 240 V Circuit Breaker delivers dependable protection with precise, predictable performance you can trust in demanding industrial environments.