Detailed Description

The ABB SJ204T (2TAZ144400R0204) is a high-performance 4-pole Miniature Circuit Breaker (MCB) engineered to protect electrical installations from overloads and short-circuit faults. Configured with C-curve tripping characteristics, it is ideal for circuits with moderate inrush currents such as small motors, lighting systems, and commercial distribution networks.

With a 20A rated current and a 3kA breaking capacity, this MCB is suitable for residential, commercial, and light-industrial panels where dependable protection is essential. The 4-pole design (L1, L2, L3, N) ensures complete isolation and fault protection across all phases and the neutral line, increasing operational safety.

Constructed with ABB’s advanced thermal-magnetic technology, the SJ204T series guarantees fast, accurate protection while maintaining reliability and long service life. Its compact, modular housing simplifies DIN-rail installation and fits seamlessly into standard distribution boards.

Key Features

• Model: ABB SJ204T

• Manufacturer Part Number: 2TAZ144400R0204

• Rated Current: 20A

• Number of Poles: 4-Pole (TPN)

• Tripping Curve: C-Curve

• Breaking Capacity: 3kA

• Voltage Rating: 230/400V AC

• Protection Type: Thermal-magnetic (overload + short circuit)

• Mounting: Standard DIN-rail

• Application: Residential, commercial & light industrial

• Standards: Compliant with IEC/EN 60898-1