ACB: 3WJ - Microprocessor based trip unit – 3WJ1116-2AF52-1AA0

Product Description

Siemens 3WJ Air Circuit Breaker (ACB) – Microprocessor Based Trip Unit – 3WJ1116-2AF52-1AA0

The Siemens 3WJ1116-2AF52-1AA0 is a SINOVA / SENTRON 3WJ series Air Circuit Breaker (ACB) designed for high-performance low-voltage power distribution protection in industrial plants, PCC panels, main LT switchboards, data centers, and infrastructure installations. It is used where high fault levels, selective coordination, and reliable switching of large currents are required.

This model belongs to the 3WJ1116 frame size (1600A class) and features a microprocessor-based electronic trip unit (ETU360WJ class) that provides advanced protection functions such as overload, short-circuit, and earth fault protection, with fully adjustable settings for precise system coordination.

With a rated current of 1600A and a breaking capacity of 50kA at 440V AC, this breaker is suitable for heavy-duty industrial and commercial power distribution systems requiring high reliability, strong fault interruption capability, and long service life.

Key Features

• Siemens SINOVA / SENTRON 3WJ Air Circuit Breaker
• Microprocessor-based electronic trip unit (ETU)
• Protection functions: overload, short-circuit & earth fault
• 3-pole configuration
• Rated current: 1600A
• Breaking capacity: 50kA at 440V AC
• Draw-out type construction for easy maintenance
• High selectivity and coordination capability
• Suitable for main incomer applications
• IEC 60947-2 compliant