PHS Series - Phase Control

Littelfuse Single Function Relays
The PHS Series is an ideal method of changing lamp intensity, varying the speed of a fan/motor, or controlling the temperature of a heater. The effective output voltage is adjusted with an accessory external potentiometer suitable for line voltage applications.

Operation
Upon application of input voltage, effective output voltage can be varied by changing the external resistance value. As the external resistance increases, the effective output voltage decreases. The inverse is also true.

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Termination TypeMounting MethodDimensionsWeight (lbs/g)Compare
PHS120A10120VAC0.25 in. (6.35mm) male quick connect terminalsSurface mount with one #10 (M5 x 0.8) screw2.00 x 2.00 x 1.51 in. (50.8 x 50.8 x 38.4mm)≅3.9 oz (111g)
PHS120A20120VAC0.25 in. (6.35mm) male quick connect terminalsSurface mount with one #10 (M5 x 0.8) screw2.00 x 2.00 x 1.51 in. (50.8 x 50.8 x 38.4mm)≅3.9 oz (111g)
PHS120A6120VAC0.25 in. (6.35mm) male quick connect terminalsSurface mount with one #10 (M5 x 0.8) screw2.00 x 2.00 x 1.51 in. (50.8 x 50.8 x 38.4mm)≅3.9 oz (111g)
PHS230A10230VAC0.25 in. (6.35mm) male quick connect terminalsSurface mount with one #10 (M5 x 0.8) screw2.00 x 2.00 x 1.51 in. (50.8 x 50.8 x 38.4mm)≅3.9 oz (111g)
PHS230A20230VAC0.25 in. (6.35mm) male quick connect terminalsSurface mount with one #10 (M5 x 0.8) screw2.00 x 2.00 x 1.51 in. (50.8 x 50.8 x 38.4mm)≅3.9 oz (111g)
PHS230A6230VAC0.25 in. (6.35mm) male quick connect terminalsSurface mount with one #10 (M5 x 0.8) screw2.00 x 2.00 x 1.51 in. (50.8 x 50.8 x 38.4mm)≅3.9 oz (111g)