
4880 Thermal Actuators for small valves and radiator valves STS61 • AC 24 V operating voltage, DC 0…10 V positioning signal • Positioning
Type summary Type Operating voltage Positioning time at 20 °C Dead time Positioning signal Connecting cable STS61 AC 24 V 18…30 s/mm 80 s DC 0…
Operation Breakdown Direction of action Positioning signal DC 0…10V Actuator stem Valve behaviour Actuator without operating voltage Y increasing
Position indication The valve position is indicated by a blue bar which moves up and down with the actuator stem. 4880Z22H 100 %H 100 % Direction of
Accessories Adapter type AV... for third-party valves Adapter types AV51 to AV61 are available for mounting the STS61 actuators on third-party radiat
Maintenance STS61 actuators are maintenance-free. Repair Faulty actuators must be replaced as complete units. The actuator will be destroyed when open
Technical data STS61 Power supply Operating voltage (extra low voltage 1)) AC 24 V Voltage tolerance ± 20 % Frequency 50 / 60 Hz Power
Connecting cable 4880Z25enredwhitebrownblue Y Positioning signal (DC 0…10 V) Y Positioning signal (DC 0…10 V) G System potential AC 24 V G0 Syst
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