Siemens SENTRON 3WT Air Circuit Breaker (ACB) – 3WT8105-6AA08-5AB2

The Siemens 3WT8105-6AA08-5AB2 is a high-performance SENTRON 3WT Air Circuit Breaker (ACB) designed for protection, control, and isolation of low-voltage power distribution systems. This 4-pole withdrawable Air Circuit Breaker is rated at 1000A and equipped with an advanced ETU37WT Electronic Trip Unit that provides overload, short-circuit, instantaneous, and ground-fault protection. Engineered for demanding industrial and commercial applications, the breaker ensures reliable operation, superior system protection, and enhanced electrical safety. Its draw-out construction allows quick maintenance and replacement, making it an ideal choice for PCC panels, MCC panels, generator incomers, transformer feeders, and critical power distribution networks.

Key Features

• Siemens SENTRON 3WT Series Air Circuit Breaker (ACB)
• Part Number: 3WT8105-6AA08-5AB2
• 4-Pole withdrawable (draw-out) design
• Rated current: 1000A
• Frame Size 1 construction
• ETU37WT Electronic Trip Unit
• LSING protection functions
• Overload, short-circuit, instantaneous, and ground-fault protection
• High breaking capacity of 66kA at 500V AC
• Rated operational voltage up to 500V AC
• Rated insulation voltage of 1000V
• Manual stored-energy operating mechanism
• Tripped indication and auxiliary signaling contacts
• Mechanical lockout system for enhanced operator safety
• Guide frame for smooth withdrawal and maintenance
• High short-time withstand current capability
• Compact and modular switchgear design
• Suitable for industrial, commercial, and infrastructure applications
• Compliant with IEC 60947-2 standards
• Long mechanical and electrical service life
• Ideal for PCC Panels, MCC Panels, Generator Protection, and Transformer Feeders