Detailed Description

The ABB SJ203T (2TAZ144300R0404) is a high-quality 3-Pole Miniature Circuit Breaker (MCB) engineered for dependable protection of electrical circuits against overloads and short circuits. Designed for three-phase systems, it supports a wide range of commercial, residential, and light-industrial applications.

With a 40A rated current and C-Curve tripping characteristic, the SJ203T is ideal for loads with moderate starting current such as lighting lines, HVAC systems, small motors, and general distribution circuits. The breaker offers a 3kA breaking capacity, providing reliable interruption in the event of a fault.

Its modular DIN-rail design ensures fast installation and easy integration into distribution boards. The SJ200 series is built with ABB’s trusted thermal-magnetic trip technology, ensuring high durability, consistent performance, and compliance with international standards (IEC/EN 60898-1).

Key Features

• Model: ABB SJ203T

• Part Number: 2TAZ144300R0404

• Poles: 3-Pole (L1, L2, L3)

• Rated Current: 40A

• Tripping Curve: C-Curve

• Breaking Capacity: 3kA

• Rated Voltage: 400V AC

• Compact modular design for DIN-rail mounting

• Precision thermal-magnetic protection

• High reliability for three-phase distribution

• Suitable for residential, commercial, and light-industrial protection

• Built to IEC/EN standards