ACB: 3WJ - Microprocessor based trip unit - 3WJ1110-2AF62-4DA4

Product Description

Siemens 3WJ Air Circuit Breaker (ACB) – Microprocessor Based Trip Unit – 3WJ1110-2AF62-4DA4

The Siemens 3WJ1110-2AF62-4DA4 is a SENTRON / SINOVA series Air Circuit Breaker (ACB) designed for reliable protection and control of low-voltage power distribution systems. It is widely used in PCC panels, main LT switchboards, industrial plants, infrastructure projects, commercial buildings, and critical power applications where high fault-level protection and intelligent trip functionality are required.

This ACB belongs to the 3WJ frame size 1100 series and is equipped with a microprocessor-based electronic trip unit (ETU) that provides advanced protection features such as overload, short-circuit, and earth fault protection with adjustable settings for better system coordination and safety.

With a rated current of 1000A and a breaking capacity up to 50kA at 440V AC, this breaker is suitable for demanding industrial power distribution networks requiring high reliability and selective protection.

Key Features

• Siemens SINOVA / SENTRON 3WJ Air Circuit Breaker
• Microprocessor-based electronic trip unit (ETU)
• Protection functions: overload, short-circuit & earth fault
• 4-pole configuration
• Rated current: 1000A
• Breaking capacity: 50kA at 440V AC
• Draw-out execution (service-friendly maintenance)
• High selectivity and protection coordination
• Suitable for main incomer applications
• IEC 60947-2 compliant