H20PS（M）Series Pressure Switch

H20PS（M）Series Pressure SwitchH20PS（M）SERIES PRESSURE SWITCHOVERVIEWH20PS（M） series pressure switch is a miniature pressure switch. It controls the circuit open or close on pressure of the controlled medium increase or decrease. It is widely used in refrigeration system, oil pump, air pump and the other industry equipment which require to adjust the medium pressure to protect sytem.WORKING PRINCIPALThe working principle of H20PS series pressure switch is : when the pressure of the controlled medium rises to a predetermined value, the metal flip disk will flip and drive a set of electrical contacts by means of a transfer pin. When the pressure of the controlled medium drops below another predetermined value, the snap disk will flip to the original state, to make the contact terminal close (or open). In the way the switch function is realized.There is a slight difference between the working principle of H20PS(M) series pressure switch and H20PS series pressure switch; when the pressure of the controlled medium decreases, the switch can not reset automatically. And just only as the push button is pressed, the circuit will reset to the original state.TECHNICAL PARAMETERTypeH20PSH20PSMType of ResetAutomaticManualSwitch Action Option and Connect OptionA=Lead wire,Normally open(NO)A=NOB=Lead wire, Normally closed(NC)B=NCc=Quick connect terminal, NOD=Quick connect terminal, NCE=Lead wire, single-pole, double-throwF=Quick connect terminal, single-pole, double-throwPressure Range0.02MPa~5.5MPa0.02MPa~5.5MPaAmbient Temperature Range-35℃~+65℃-35℃~+65℃Electrical RatingsAC120/240V,375VAC120/240V,375VAC/DC36V,3AAC/DC36V,3AAC120V,5.8FLA,34.8LRAAC120V,5.8FLA,34.8LRAAC240V,2.9FLA,15LRAAC240V,2.9FLA,15LRALife at Rated Current100000 cycles6000 cyclesDielectricTerminal toterminal:AC600V,10STerminal to terminal:AC600V,10STerminal to case:AC1500V,1minTerminal to case:AC1500V,1min