SENTRON 3WT Air Circuit Breaker with Microprocessor Trip Unit – 3WT8165-6UN34-5AB2

🔹 Siemens SENTRON 3WT Air Circuit Breaker – 3WT8165-6UN34-5AB2 (Microprocessor Trip Unit ACB)

🔹 Product Description

The Siemens 3WT8165-6UN34-5AB2 is a SENTRON 3WT series Air Circuit Breaker (ACB) designed for high-capacity low-voltage power distribution systems with advanced intelligent protection. It is equipped with a microprocessor-based electronic trip unit (ETU37WT class) that provides precise and reliable protection for modern electrical installations.

This breaker is widely used in industrial plants, commercial buildings, data centers, infrastructure projects, and critical power distribution networks, where high fault levels, selective coordination, and continuous uptime are essential.

The integrated microprocessor trip unit ensures protection against overload, short circuit, and earth fault conditions, while also offering adjustable settings, fault diagnostics, and coordination capability with upstream and downstream devices. This improves system stability and reduces downtime in complex electrical networks.

The SENTRON 3WT series is Siemens’ advanced ACB platform designed for smart and modular power distribution systems, supporting withdrawable (draw-out) construction for safe maintenance without shutting down the entire system.

Based on Siemens SENTRON 3WT technical architecture, the 3WT8165 frame class typically corresponds to 1600A rated current with 4-pole configuration and breaking capacity up to around 66kA at 500V AC, depending on release configuration.

🔹 Key Features

• Genuine Siemens SENTRON 3WT Air Circuit Breaker
• Model: 3WT8165-6UN34-5AB2
• Microprocessor-based electronic trip unit (ETU37WT class)
• Protection against overload, short circuit, and earth fault
• High breaking capacity suitable for industrial power systems
• Withdrawable (draw-out) design for safe maintenance
• Supports selective coordination in complex networks
• Suitable for MCC, PCC, and LT distribution panels
• Advanced fault diagnostics and system monitoring
• Long operational life with industrial-grade reliability