The Trane SFSWT03533 (HCCY1C300VQ394) is an auxiliary switch designed for use with 20 to 60 Amp contactors. It features a Single Pole Double Throw (SPDT) configuration, providing reliable switching capability for control circuits, status indication, or interlock functions within HVAC systems. Key Features Compatible with 20?60 Amp contactors SPDT (Single Pole Double Throw) for flexible circuit control Durable construction ensures long-term reliability OEM replacement part for Trane systems Easy to install in existing contactor setups Specifications Part Number: SFSWT03533 Alternate Number: HCCY1C300VQ394 Type: Auxiliary switch Switch Configuration: SPDT Application Range: 20?60 Amp contactors Mounting: Snap-on or screw-mount (depending on contactor) Compatible Models Compatible with various Trane contactors rated between 20A and 60A. Always verify compatibility based on your contactor model or consult a service technician. Why Choose This Item The Trane SFSWT03533 auxiliary switch offers reliable performance and precise circuit control for your HVAC system. Designed to seamlessly integrate with Trane contactors, it supports effective monitoring and automation, making it an essential upgrade or replacement for optimized system operation.