Trane BAS1648 Auxiliary Contact N.O./N.C. Size 3

The Trane BAS1648 is a Size 3 auxiliary contact assembly designed for use with compatible HVAC contactors in commercial heating, ventilation, and air conditioning systems. This component provides both normally open (N.O.) and normally closed (N.C.) contact configurations, enabling additional control and signaling functions within electrical circuits.

Key Features:

• Size 3 auxiliary contact block for industrial-grade contactors
• Dual contact configuration: one normally open and one normally closed
• Enables remote monitoring, status indication, and interlock circuits
• Genuine OEM Trane replacement part
• Designed for reliable circuit control in commercial HVAC applications

Auxiliary contacts are essential for expanding the control capabilities of contactors, allowing technicians to integrate control signals, status lights, safety interlocks, and building automation system (BAS) interfaces. The Size 3 designation indicates compatibility with medium to large frame contactors typically used in commercial HVAC equipment.