PSI Automation – Formerly Baccara Australia

ph | +61 3 9729 3250    e | sales@psiautomation.com.au

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ph | +61 3 9729 3250   e | sales@psiautomation.com.au

Pressure Switches​

We stock a huge amount of pressure switches with ranges from 0.034 bar up to 410 bar

Pressure Switches

We stock a huge amount of pressure switches with ranges from 0.034 bar up to 410 bar

How To Choose
Pressure Ranges
Selection Codes
Stocked List & Data Sheets

How to choose a pressure switch

Pressure switches come with a vast array of options. In order to select the correct pressure switch for your system, it is important to gather as much information as you can.

Below are the vital pieces of information we need to select the perfect switch for your application:

  • Pressure range or switching point – the pressure you require it to switch at, and whether it is rising or falling
  • Port size – usually ⅛” or ¼ and BSP or NPT
  • Switch type – Normally open, normally closed, or changeover
  • Electrical connection – usually a DIN plug, flying leads, or spade terminals
  • Body material – usually brass, steel, stainless steel, or plastic
  • Pressure sensing component – we typically stock diaphragm type switches. These come in a few material options including Nitrile (NBR) as a standard, and Viton, and EPDM as options.
  • Maximum system pressure – also referred to as overpressure

In addition to this, it may help us to know the following:

  • Fluid media – what is going through the switch
  • Minimum/maximum temperature – of the switches environment

By gathering the information above, you can contact us and we’ll find the right switch for you!

Alternatively, please see below for our coding system and stock list

We stock a huge range of pressure switches, below is a handy guide to help get you select the perfect switch for your needs

Pressure Ranges

Below are our core pressure ranges. When selecting a pressure range, it is important to know what your switching point will be. For highest accuracy choose a switch that has the switching point close to the middle of the pressure range.

Example: if I know my switching point is going to be 6 bar, then I should look at the pressure switches in the L7, L8, and L9 ranges to find the exact switch I need.

Low Range Pressure Switches

L1 | 0.034 – 1 bar
L2 | 0.1 – 1 bar
L3 | 0.2 – 0.5 bar
L5 | 0.35 – 2 bar
L7 | 1 – 10 bar
L8 | 1.75 – 10 bar
L9 | 3.5 – 10 bar

Medium Range Pressure Switches

M2 | 2 – 35 bar

M3 | 10 – 20 bar

M4 | 10 – 45 bar

M6 | 35 – 120 bar

High Range Pressure Switches

H2 | 20 – 170 bar

H3 | 30 – 380 bar

H6 | 100 – 300 bar

H7 | 150 – 410 bar

H7* | 108 – 410 bar

* for High Max Pressure [HP] switch

Selection Codes

Below are the codes used in our part numbers.

An example of a complete part number of one of our most popular switches is:

PS-L5-4G-C-HC-2-4-G-AN
0.35-3 bar, G1/4″ Male, Change Over, DIN Plug, Brass Body, Nitrile Diaphragm, Gold Contacts, AN (Data Sheet Code)

Stocked Pressure Switches

We have carefully curated a stock list of the most popular pressure switches across Australia. With nearly 100 different switches in our inventory, and thousands on hand, we pride ourselves on being able to supply our customers with a switch to suit their needs directly from our stock for nearly every enquiry.

For the odd switch that we don’t carry, please contact us and we’ll seek it out.

Low Pressure Switches

L1 | 0.034 – 1 bar

PS-L1-4G-C-HC-2-4-G-PV-NEW

L2 | 0.1 – 1 bar

PS-L2-2G-A-SP-2-4-EU

PS-L2-2G-B-SP-2-4-EU

PS-L2-2M-A-SP-2-4-EU

PS-L2-2M-A-SP-2-4-EU

L3 | 0.2 – 0.5 bar

PS-L3-4G-C-FL-2-4-G-AN

PS-L3-4G-C-HC-2-4-G-AN

PS-L3-4G-C-HC-3-4-G-AN

PS-L3-4M-C-HC-2-4-G-AN

L5 | 0.2 – 0.5 bar

PS-L5-2G-C-FL-2-4-AN

PS-L5-2G-C-HC-2-4-G-AN

PS-L5-2M-C-HC-2-4-AN

PS-L5-4G-C-FL-2-4-G-AN

PS-L5-4G-C-FL-3-1-AN

L5 | 0.2 – 0.5 bar (continued)

PS-L5-4G-C-HC-2-1-G-AN

PS-L5-4G-C-HC-2-4-G-AN

PS-L5-4G-C-HC-3-1-G-AN

PS-L5-4G-C-HC-3-4-G-AN

PS-L5-4M-C-HC-2-4-G-AN

L6 | 0.3 – 5 bar

PS-L6-4G-C-FL-5-4-PV

L7 | 1 – 10 bar

PS-L7-2G-A-SP-1-4-EU

PS-L7-2G-A-SP-2-4-EU

PS-L7-2G-B-SP-2-2-EU

PS-L7-2G-B-SP-2-4-EU

PS-L7-2M-A-SP-1-4-EU

PS-L7-2M-A-SP-2-4-EU

PS-L7-2M-B-SP-1-4-EU

PS-L7-2M-B-SP-2-4-EU

PS-L7-4G-A-SP-1-4-G-EU

L8 | 1.75 – 10 bar

PS-L8-2G-C-HC-2-4-G-AN

PS-L8-2M-C-FL-2-4-AN

PS-L8-2M-C-HC-2-4-AN

PS-L8-4G-C-FL-2-4-AN

PS-L8-4G-C-HC-2-4-G-AN

PS-L8-4G-C-HC-3-1-AN

PS-L8-4G-C-HC-3-2-AN

PS-L8-4G-C-HC-3-4-AN

PS-L8-4M-C-HC-2-4-AN

L9 | 3.5 – 10 bar

PS-L9-4G-C-FL-5-4-PV

PS-L9-4G-C-HC-1-4-RA-HP-AN

PS-L9-4G-C-SP-5-4-PV

Medium Pressure Switches

M2 | 2 – 35 bar

PS-M2-4G-C-FL-1-4-G-AN

PS-M2-4G-C-HC-1-2-AN

PS-M2-4G-C-HC-1-4-G-AN

PS-M2-4G-C-HC-3-4-G-AN

M3 | 10 – 20 bar

PS-M3-2M-A-SP-1-4-EU

PS-M3-2M-A-SP-2-4-EU

PS-M3-2M-B-SP-1-4-EU

PS-M3-2M-B-SP-2-4-EU

M4 | 10 – 45 bar

PS-M4-4G-C-HC-1-4-RA-HP-AN

M5 | 20 – 50 bar

PS-M5-2M-A-SP-1-4-EU

PS-M5-4G-B-SP-1-4-EU

PS-M5-4G-C-HC-1-4-EU

M6 | 35 – 120 bar

PS-M6-4G-C-HC-1-4-RA-HP-AN

High Pressure Switches

H2 | 20 – 170 bar

PS-H2-4G-C-FL-1-4-G-AN

PS-H2-4G-C-HC-1-4-G-AN

PS-H2-4G-C-HC-3-4-G-AN

PS-H2-4M-C-HC-1-4-G-AN

H4 | 50 – 150 bar

PS-H4-2G-A-SP-1-4-P-EU

PS-H4-4G-A-SP-1-4-P-EU

PS-H4-4G-B-SP-1-4-P-EU

H6 | 100 – 300 bar

PS-H6-4G-A-SP-1-4-P-EU

PS-H6-4G-B-SP-1-4-P-EU

H7* | 108 – 410 bar

PS-H7-4B-C-HC-1-4-RA-HP-AN

PS-H7-4G-C-HC-1-4-RA-HP-AN

H7 | 150 – 410 bar

PS-H7-4G-C-FL-1-4-AN

PS-H7-4G-C-HC-1-4-AN

PS-H7-4G-C-HC-3-4-AN

H8 | 200-400 bar

PS-H8-4G-C-HC-1-4-P-EU

Inventoried Switches PDF

Would you like to learn more about pressure switches?

Our news post is a great resource to learn about pressure switches and how they operate. Check it out below: