Siemens Industrial Controls 3RT2026-1BB40 Contactor 320720-756 protecting terminal units from stagnation

protecting terminal units from stagnation or overheating

Proper installation requires ensuring sufficient liquid subcooling at the valve inlet to prevent premature flashing and erratic cooling performance

performing the necessary AC to DC signal conversion required to drive unloader solenoids found in advanced Copeland Scroll UltraTech compressors

Operating at 208-230Vac on a single phase

Internal Forged Stops: Mechanical stops provide a precise 1/4-turn operation for positive open and closed positions

Siemens Industrial Controls 3RT2026-1BB40 Contactor 320720-756 protecting terminal units from stagnationThe Siemens Sirius 3RT2026 1BB40 Contactor is a heavy duty S0 size power contactor engineered for demanding motor control and industrial HVACR automation. Operating on a 24VDC control coil, this 3 pole device maintains a 25A AC 3 rating at 400V, providing a power delivery capacity of up to 11kW. Built for high cycle reliability in panel mount or 35mm DIN rail configurations, the 3RT2026 1BB40 features two integrated auxiliary contacts (1 NO + 1 NC)