| Danfoss CS Pressure switches for air and water
CS pressure switches have a three-pole switch and adjustable differential. Whereas most pressure switches have fixed differential pressure, the Danfoss CS pressure switch features an adjustable differential, so the switch can be adjusted to suit a variety of working conditions. And the CS switch is supplied with a manual switch to lock the contact system in the open position independent of the pressure in the tank for added safety.
 • For automatic start and stop of air compressors and water boosters • Pressure ranges: 2 to 20 bar • Contact system: 3-pole (standard) and 1-pole (accessory) • Adjustable differential • Manual switch to lock the contact system • Relief valve (accessory) • Enclosure IP43 or IP55 • Also available with DVGW (KTW) drinking water approval
Code number selection Code no. Type Regul. Diff.min. range Diff.max. range Max. W/P Conn. Contact Encl. range[bar]Pe setting [b] setting [b] [bar] Pe size function 031E010466 CS 4,00 - 12,00 bar 1,00 - 3,00 bar 2,00 - 4,00 bar 12,0 bar (1) TPST IP43 031E020066 CS 2,00 - 6,00 bar 0,72 - 1,00 bar 1,00 - 2,00 bar 6,0 bar G 1/4 TPST IP43 031E020266 CS 2,00 - 6,00 bar 0,72 - 1,00 bar 1,00 - 2,00 bar 6,0 bar G 1/4 (2) 031E020566 CS 2,00 - 6,00 bar 0,72 - 1,00 bar 1,00 - 2,00 bar 6,0 bar G 1/4 TPST IP55 031E021066 CS 2,00 - 6,00 bar 0,72 - 1,00 bar 1,00 - 2,00 bar 6,0 bar G 1/2 A TPST IP43 031E021566 CS 2,00 - 6,00 bar 0,72 - 1,00 bar 1,00 - 2,00 bar 6,0 bar G 1/2 A TPST IP55 031E021866 CS 2,00 - 6,00 bar 0,72 - 1,00 bar 1,00 - 2,00 bar 6,0 bar G 1/2 A TPST IP55 031E022066 CS 4,00 - 12,00 bar 1,00 - 3,00 bar 2,00 - 4,00 bar 12,0 bar G 1/4 TPST IP43 031E022566 CS 4,00 - 12,00 bar 1,00 - 3,00 bar 2,00 - 4,00 bar 12,0 bar G 1/4 TPST IP55 031E023066 CS 4,00 - 12,00 bar 1,00 - 3,00 bar 2,00 - 4,00 bar 12,0 bar G 1/2 A TPST IP43 031E023566 CS 4,00 - 12,00 bar 1,00 - 3,00 bar 2,00 - 4,00 bar 12,0 bar G 1/2 A TPST IP55 031E024066 CS 7,00 - 20,00 bar 2,00 - 3,50 bar 3,50 - 7,00 bar 20,0 bar G 1/4 TPST IP43 031E024566 CS 7,00 - 20,00 bar 2,00 - 3,50 bar 3,50 - 7,00 bar 20,0 bar G 1/4 TPST IP55 031E025066 CS 7,00 - 20,00 bar 2,00 - 3,50 bar 3,50 - 7,00 bar 20,0 bar G 1/2 A TPST IP43 031E025566 CS 7,00 - 20,00 bar 2,00 - 3,50 bar 3,50 - 7,00 bar 20,0 bar G 1/2 A TPST IP55 031E026566 CS 2,00 - 6,00 bar - - 6,0 bar G 1/2 A TPST IP55 031E027166 CS 4,00 - 12,00 bar 1,00 - 3,00 bar 2,00 - 4,00 bar 12,0 bar G 1/2 A TPST IP43 031E101066 CS 2,00 - 6,00 bar 0,72 - 1,00 bar 1,00 - 2,00 bar 6,0 bar G 1/2 A TPST IP43 031E101266 CS 4,00 - 12,00 bar 1,00 - 3,00 bar 2,00 - 4,00 bar 12,0 bar G 1/2 A TPST IP43 031E101466 CS 7,00 - 20,00 bar 2,00 - 3,50 bar 3,50 - 7,00 bar 20,0 bar G 1/2 A TPST IP43 031E218866 CS 2,00 - 6,00 bar 0,72 - 1,00 bar 1,00 - 2,00 bar 6,0 bar G 1/2 A TPST IP43 031E219166 CS 2,00 - 6,00 bar 0,72 - 1,00 bar 1,00 - 2,00 bar 6,0 bar G 1/2 A TPST IP43 Note (1) 1/4 in-18 NPT int. Note (2) SPDT 1-pole w. looped circuit IP43 Pressure switches types PS and PSU ** OBSOLETE replaced by CS range- Table for pressure reference only *** Types PS and PSU were pressure controlled three-pole switches. The position of the contacts depended on the pressure in the inlet connection and the range setting. Pressure switch type PS was for the automatic stop and start of motors in compressed air and water pressure plant (pressure storage tanks). Type PSU were especially for compressed air plant where pressure over the compressor piston must be relieved before re starting. Stop Min. Max. Max. test relief valve Pressure Code no. Type pressure differential differential pressure 1/4 flare connection range bar bar bar bar with without bsp 1 to 4 0.6-0.7 3 20 x 1/2 031E0171 PS4B 1 to 4 0.6-0.7 3 20 x 1/2 031E0172 PSU4B 1 to 7 0.95-1.3 3 20 x 1/2 031E0182 PS7B 2,5 to 9,5 1.2-1.8 7 25 x 1/2 031E0175 PS9B 2,5 to 9,5 1.2-1.8 7 25 x 1/2 031E0176 PSU9B 7 to 15 1.7-2.3 7 25 x 1/2 031E0179 PS15B 7 to 15 1.7-2.3 7 25 x 1/2 031E0180 PSU15B
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