MECHANICAL DIFFERENTIAL PRESSURE SWITCH
630 Range – For slightly aggressive liquids and gases
Application: pump proofing, chiller safety, etc
IP65 with offered cover, 1 SPDT rated 1(0.5) @ 250 Vac

630.910007 DP set point range 0.6 – 2kpa, P max 10 bar
630.920007 DP set point range 1.5 – 6 kPa, P max 10 bar
630.930007 DP set point range 4 -20 kPa, P max 10 bar
630.940007 DP set point range 15 – 100 kPa, P max 20 bar
630.950007 DP set point range 100 – 300 kPa, P max 20 bar
630.960007 DP set point range 200 – 550 kPa, P max 20 bar

Huba model 630 dp switch data sheet