Detailed Description

The ABB SJ203T (2TAZ144300R0204) is a 3-pole Miniature Circuit Breaker (MCB) designed to provide reliable protection for electrical circuits against overloads and short-circuits. With a 20A rated current and C-curve tripping characteristic, it is ideal for circuits with moderate inrush currents, including lighting, small motors, and three-phase distribution panels in residential, commercial, and light industrial installations.

This breaker features a 3kA breaking capacity, ensuring rapid disconnection during short-circuit events. Its compact modular design allows easy installation on DIN rails, and the robust thermal–magnetic mechanism guarantees long-lasting reliability. The 3-pole configuration (L1, L2, L3) provides full-phase protection for three-phase systems.

Key Features

• Model: ABB SJ203T

• Part Number: 2TAZ144300R0204

• Poles: 3-Pole (L1, L2, L3)

• Rated Current: 20A

• Tripping Curve: C-Curve

• Breaking Capacity: 3kA

• Voltage Rating: 230/400V AC

• Compact, DIN-rail mountable design

• Thermal–magnetic protection for overloads and short-circuits

• Suitable for residential, commercial, and light industrial circuits

• Compliant with IEC/EN 60898 standards