Danfos CS Pressure Switches for Air and Water

 

Danfos CS Pressure Switches for Air and Water
CS Pressure Switches

 

CS pressure switches have a built-in pressure operated, three-pole switch. The contact position of which depends on the pressure in the connector and the range setting and adjustable differential. The pressure switches are fitted with a manual switch that will lock the contact system in the open position independently of the pressure in the system. Pressure switches with relief valve is used in compressed air systems where pressure relief on the compressor piston before start is required. The CS is suited for automatic start and stop of air compressors and water boosters.

Features

  • Pressure ranges 2 – 20 bar
  • Pressure connection G ½ or G 1/4
  • Contact system 3-pole (TPST) as standard available also as an accessory
  • Adjustable differential
  • Relief valve as accessory
  • Manual switch to lock the contact system
  • Enclosure IP43 or IP55
  • Special versions with pressure connection made of polyacetal suitable in drinking water applications

Approvals

  • EN 60 947-4-1
  • EN 60 947-5-1

Specifications

Contact load Ie Ue
AC-3 12 A 220 – 415 V
AC-3 9 A 600 V
DC-13/14 2 A 220 V (3 contacts in series)

 

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Electrical life on rated load 100.000 operations
Mechanical life 1.000.000 operations
Ambient temperature -20 – 70 °C
Temperature of medium Water 0 – 70 °C
Air -20 – 70 °C
Vibration-proof 0 – 1000 Hz at 4g
Direction A-B 341 Hz
Resonance frequency Direction C-D 332 Hz
Direction E-F 488 Hz
Diaphragm material Hytrel
Pressure connector Special Polyacetal, G ½
Others Silumin, G ¼ or G ½
Pressure relief valve (capacity) 2000 cm3 from 10 – 1 bar in 18.8 sec.
Grade of enclosure to IEC 529 IP43 or IP55

 

Properties according to EN 60947

solid / stranded 0.7 – 2.5 mm2
Wire dimension flexible, with / without ferrules 0.75 – 2.5 mm2
flexible, with ferrules 0.5 – 1.5 mm2
Tightening torque max. 1.2 Nm
Rated impulse voltage 4 kV
Pollution degree 3
Short circuit protection, fuse 25 A
Insulation 600 V
IP-index IP43 or IP55

 

Standard pressure switch type CS

Stop pressure

pe [bar]

Min. differential Δp [bar] Max. differential Δp [bar] Max. test pressure

pe [bar]

Grade of enclo- sure Pressure connection Code no. Type
2 – 6 0.72 – 1.0 1.0 – 2.0 10 IP43 G ¼ 031E020266 1-pole
2 – 6 0.72 – 1.0 1.0 – 2.0 10 IP43 G ¼ 031E020066 3-pole
2 – 6 0.72 – 1.0 1.0 – 2.0 10 IP55 G ¼ 031E020566 3-pole
2 – 6 0.72 – 1.0 1.0 – 2.0 10 IP43 G ½ 031E021066 3-pole
2 – 6 0.72 – 1.0 1.0 – 2.0 10 IP55 G ½ 031E021566 3-pole
4 – 12 1 – 1.5 2.0 – 4.0 20 IP43 G ¼ 031E022066 3-pole
4 – 12 1 – 1.5 2.0 – 4.0 20 IP55 G ¼ 031E022566 3-pole
4 – 12 1 – 1.5 2.0 – 4.0 20 IP43 G ½ 031E023066 3-pole
4 – 12 1 – 1.5 2.0 – 4.0 20 IP55 G ½ 031E023566 3-pole
7 – 20 2 – 3.5 3.5 – 7.0 32 IP43 G ¼ 031E024066 3-pole
7 – 20 2 – 3.5 3.5 – 7.0 32 IP55 G ¼ 031E024566 3-pole
7 – 20 2 – 3.5 3.5 – 7.0 32 IP43 G ½ 031E025066 3-pole
7 – 20 2 – 3.5 3.5 – 7.0 32 IP55 G ½ 031E025566 3–pole

 

Special versions with Polyacetal pressure connection – suitable for drinking water

Stop pressure

pe [bar]

Min. differential Δp [bar] Max. differential Δp [bar] Max. test pressure

pe [bar]

Grade of enclo- sure Pressure connection Code no. Type
2 – 6 0.72 – 1.0 1.0 – 2.0 10 IP43 G ½ 031E101066 3-pole
4 – 12 1 – 1.5 2.0 – 4.0 20 IP43 G ½ 031E101266 3-pole
7 – 20 2 – 3.5 3.5 – 7.0 32 IP43 G ½ 031E101466 3–pole

 

Accessories and spare parts

Description Code no.
Three pole contact system (TPST) 031E029166
Pressure relief valve, incl. fixing screw (for 6 mm pipe/hose) 031E029866
Pressure relief valve, incl. fixing screw (for 1/4 in. pipe/hose) 031E029766
Two Pg 16 screwed cable entries with gaskets (cable diam. 6.5 – 15 mm) 031E029366
Nipple with 7/16-20 UNF and M10 x 1 int. 031E029666

Download Datasheet : Danfos CS Pressure Switches for Air and Water

Reference : danfoss.com