Honeywell Commercial Q651A1009 Thermostat Switching Sub Base

Honeywell Commercial Q651A1009 Thermostat Switching Sub Base is a rugged, CSA‑approved switching subbase designed for commercial line‑voltage control panels. Used on the T6051A line voltage thermostat and the TG511/TG512 thermostat guard, this sub base delivers dependable performance in demanding HVAC and electrical applications. With compact dimensions and solid ratings, it fits standard installations while providing reliable switching for everyday operations. Overall dimensions are 3-3/16 inch W x 11/16 inch D x 5-13/16 inch H. Current ratings include 16 A at 120 VAC and 8 A at 240 VAC (full load), plus 96 A at 120 VAC and 48 A at 240 VAC (locked rotor). Frequency is 60 Hz. Includes HEAT-OFF-COOL/HEAT-OFF-FAN/AUTO-OFF-ON switch label, ready for immediate installation. Ideal as a replacement sub base for commercial thermostats and control panels, built to endure continuous operation in demanding environments.

• Type: Switching Subbase
• Used On: T6051A line voltage thermostat; TG511/TG512 thermostat guard
• Dimensions: 3-3/16" W x 11/16" D x 5-13/16" H
• Electrical ratings: 16 A @ 120 V; 8 A @ 240 V (full load); 96 A @ 120 V; 48 A @ 240 V (locked rotor)
• Frequency: 60 Hz
• Includes: HEAT-OFF-COOL / HEAT-OFF-FAN / AUTO-OFF-ON switch label
• Approval: CSA