ABB SMISSLINE TP S403M Miniature Circuit Breaker, 4-Pole, 16A, Type K, 415V ac AC, 50 kA Breaking Capacity

This miniature circuit breaker provides overcurrent protection for low-voltage installations and is intended for four-pole distribution circuits. It operates within three-phase systems at rated AC voltages up to 415V and uses a combined thermal and electromechanical trip arrangement to interrupt fault currents. The device is suited to panel mounting where standardised protection and a Compact footprint are required.

• 52.20kA breaking capacity protects against high fault currents
• Type K tripping characteristic handles motor-start and inductive loads
• 4-pole configuration enables simultaneous multi-phase disconnection
• 16A current rating supports moderate load circuits
• I/O reset actuator permits clear manual on/off operation

• Suitable for three-phase distribution panels in commercial buildings
• Ideal for circuits with frequent motor starts and inductive loads
• Used with switchboards requiring coordinated multi-pole protection
• Can be used for feeder protection where high interrupting capacity is needed

The enclosure meets IP20 protection, which guards against access to hazardous parts and solid objects larger than 12 mm.

Conductors connect via screw terminals designed for secure clamping under vibration.

Short-circuit interruption and design align with IEC/EN 60947-2 requirements.

Thermal action responds to prolonged overload while the electromechanical release trips on Rapid fault currents.