PRESSURE SWITCH 32BAR

*Danfoss Pressure Switch 32 Bar* = Original Denmark Danfoss pressure switch – Max 32 bar. For compressor, refrigeration, hydraulic, boiler.

Danfoss = Spelled *Danfoss*, not Danfos. Original Denmark.

32 bar = 32 bar max cut-out.

### *Danfoss Pressure Switch 32 Bar Specs*
Spec Details
**Brand** Danfoss Denmark – Original
**Model** KP36 / KP35 / KP15 – KP36 is 32 bar model
**Pressure Range** 2 – 32 bar – Adjustable
**Max Pressure** 32 bar cut-out, 40 bar burst
**Differential** 3 – 10 bar adjustable – Difference between cut-in and cut-out
**Connection** 1/4″ BSP male – G1/4
**Contact** 1x SPDT – 1 NO + 1 NC
**Voltage** 220V AC / 380V AC
**Current** 16A AC – Direct for small motor
**Temp** -40°C to 65°C
**Media** Air, water, oil, refrigerant, gas
**Enclosure** IP44 – Dust / splash proof
### *Danfoss KP36 vs KP35 vs China Copy – Don’t Buy Fake*
**Original Danfoss KP36 ₦95k** **Danfoss China Copy ₦42k** **China Generic ₦25k**
**Box** Danfoss logo, Denmark, serial, QR Danfoss logo, no QR, China small print No Danfoss, generic
**Weight** 350g – Heavy brass 280g – Light 250g – Light plastic
**Contact** Silver contact, 16A Copper contact, 10A – Burns Copper, 8A – Burns fast
**Diaphragm** Stainless bellows Rubber diaphragm – Bursts at 25 bar Rubber – Bursts at 20 bar
**Accuracy** ±0.5 bar ±2 bar – Drifts ±3 bar – Drifts
**Life** 10yrs, 1M cycles 1yr, 100k cycles 6 months
*Test fake*: Original Danfoss bellows is metal accordion, not rubber. Shake – Original feels solid, copy feels hollow.

### *32 Bar vs 12 Bar vs 16 Bar – Which for Your Compressor?*
Compressor Pressure Pressure Switch You Need Cut-in / Cut-out Setting
**8 bar compressor** KP35 12 bar ₦85k Cut-in 6 bar, cut-out 8 bar – Diff 2 bar
**10 bar compressor** KP35 / KP15 16 bar ₦80k Cut-in 8 bar, cut-out 10 bar – Diff 2 bar
**12 bar compressor** KP15 16 bar ₦80k Cut-in 10 bar, cut-out 12 bar
**15 bar compressor** KP36 32 bar ₦95k Cut-in 12 bar, cut-out 15 bar
**20-30 bar PET / High pressure** **KP36 32 bar ₦95k** **Cut-in 25 bar, cut-out 30 bar**
**Hydraulic 30 bar** KP36 32 bar ₦95k Cut-in 25 bar, cut-out 30 bar
*If your compressor is 8-10 bar normal, don’t buy 32 bar KP36 – KP35 12 bar is more accurate. Buy KP36 only if you run 15-30 bar.*

### *Setting Danfoss KP36 32 Bar*
Screw What It Does How to Set
**Range Screw – Big** Sets cut-out pressure (stop) Turn clockwise = Higher cut-out. For 30 bar, set to 30
**Differential Screw – Small** Sets difference cut-in to cut-out Turn clockwise = Bigger diff. For diff 5 bar, set to 5
**Example** Want cut-in 25 bar, cut-out 30 bar Range = 30 bar, Diff = 5 bar (30 – 5 = 25)
*Don’t set diff too small 3HP, don’t wire motor direct through switch – Switch is 16A only. Use switch to control 380V contactor coil. Direct wiring burns contact in 1 month.*

### *Test Before Buying*
1. *Blow / Pump test*: Connect pump, set to 10 bar, switch must click off at 10 bar. If no click, diaphragm dead
2. *Leak test*: Soap water on bellows – No bubbles at 20 bar. Bubbles = bellows cracked ₦35k repair
3. *Contact test*: Multimeter – Continuity between 1-2 when pressure low, 1-3 when pressure high
4. *Serial*: Scan QR on box – Must show Danfoss Denmark. No QR = copy

### *Common Problems*
Problem Cause Fix
**Switch chatters – Clicks fast** Diff too small <2 bar Increase diff to 4-5 bar
**Motor doesn't stop at 30 bar** Contact welded – Overload Change switch, add contactor
**Leaks air from switch** Bellows cracked Change bellows ₦35k or new switch
**Pressure drifts** Spring weak – Copy Buy original Danfoss
### *Key Tips*
1. *Install unloader*: For compressor, use Danfoss with unloader valve – Releases head pressure, motor starts easy
2. *Don't exceed 32 bar*: KP36 max is 32 bar. If your system goes to 35 bar, switch bursts – Buy 40 bar model KP5
3. *Vibration*: Mount switch on rubber – Compressor vibration cracks bellows
4. *Spare*: Keep spare KP36 if you run factory 24hrs – Switch fails at night, factory stops

*Bottom line*:
For high pressure 20-30 bar compressor / hydraulic → *Original Danfoss KP36 2-32 bar ₦95k New* + *Contactor 32A ₦25k* = *₦120k ready* – Set cut-in 25 bar, cut-out 30 bar, diff 5 bar
For normal 8-10 bar compressor → *Don't buy KP36, buy Danfoss KP35 12 bar ₦85k* – More accurate

What is your compressor pressure – 8 bar, 10 bar, 15 bar, or 30 bar? And is it for air compressor, refrigeration, or hydraulic? I’ll tell you if you need KP36 32 bar or KP35 12 bar so you don’t buy switch that drifts.