The Trane SFSWT03534 (HCCY1Z600VQ394) is a durable auxiliary switch designed for high-voltage HVAC applications. Featuring 1 normally open (NO) and 1 normally closed (NC) contact configuration, this switch supports 600V operation at 10 amps, making it suitable for controlling auxiliary circuits in commercial and industrial systems. It ensures dependable electrical signaling and control integration. Key Features Auxiliary switch with dual contact: 1 NO / 1 NC Rated for 600 volts and 10 amps Compatible with a wide range of HVAC systems and controls Compact and durable design for demanding environments Supports reliable control signaling for contactors or relays Specifications Part Number: SFSWT03534 Alternate Part Number: HCCY1Z600VQ394 Contact Configuration: 1 Normally Open (NO), 1 Normally Closed (NC) Voltage Rating: 600V Current Rating: 10A Application: Auxiliary circuit control in HVAC systems Compatible Models (Specific model list not provided?suitable for Trane systems requiring 600V auxiliary switching. Typically installed in control panels or contactor assemblies.) Why Choose This Item Choose this switch for its versatility, high voltage capacity, and robust contact design. Whether integrating additional safety controls or expanding your HVAC system's control logic, the SFSWT03534 provides reliable performance and compatibility with Trane's control architecture.