Detailed Description

The ABB SJ203T (2TAZ144300R0254) is a 3-pole Miniature Circuit Breaker (MCB) engineered to safeguard electrical circuits against overload and short-circuit conditions. Rated at 25A with a C-curve tripping characteristic, this breaker is ideal for circuits with moderate inrush currents, including lighting systems, small motors, and three-phase distribution panels.

With a 3kA breaking capacity, it ensures rapid disconnection in case of faults, providing enhanced safety for residential, commercial, and light industrial applications. Its compact, DIN-rail mountable design simplifies installation, while the robust thermal–magnetic mechanism guarantees reliable performance and long service life. The 3-pole configuration (L1, L2, L3) ensures full-phase protection in three-phase systems.

Key Features

• Model: ABB SJ203T

• Part Number: 2TAZ144300R0254

• Poles: 3-Pole (L1, L2, L3)

• Rated Current: 25A

• Tripping Curve: C-Curve

• Breaking Capacity: 3kA

• Voltage Rating: 230/400V AC

• Compact modular design, DIN-rail mountable

• Thermal–magnetic protection for overload and short-circuit

• Suitable for industrial, commercial, and residential circuits

• Compliant with IEC/EN 60898 standards