At a glance
- Response Pressure
- Min. 2 mbar, max. 150 mbar
- Output
- NC or NO
- Relay Contact Rating
- 24 to 250 V AC, 24 to 50 V DC
- Operating Temperature
- -30 to +70 °C
- Technology
- Pneumatic pressure wave switch, membrane actuated
- IP Rating
- IP65 (DWGK1) or IP54 (DWGK11)
Model DW40Current modelBircher DW40 Pneumatic Pressure Wave Switch (D1 Series)
Price on request
At a glance
- Response Pressure
- Min. 2 mbar, max. 150 mbar
- Output
- NC or NO
- Relay Contact Rating
- 24 to 250 V AC, 24 to 50 V DC
- Operating Temperature
- -30 to +70 °C
- Technology
- Pneumatic pressure wave switch, membrane actuated
- IP Rating
- IP65 (DWGK1) or IP54 (DWGK11)
Switch at the end of an air hose that turns a press on a pneumatic safety edge into an electrical stop signal, for bus, train and tram doors, gates and barriers. Responds from 2 mbar, NC or NO contact, rated 50 million switching cycles.
DW40, DW40AMP, DW40DOE, DWGK1, DWGK1DOE, DWGK11, DWGK11DOE
Include the required quantity and configuration in your quote request. Price and availability will be confirmed in the quotation.
- WarrantyManufacturer warranty under Bircher's terms. Warranty claims
- DeliveryPrice, availability and delivery charges are confirmed in your quotation. Shipping and delivery
Overview
What it is
DW40 is the D1-series pressure wave switch from Bircher. It sits at the end of an air hose connected to a hollow rubber profile. When the profile is pressed, the trapped air forms a pressure wave that deflects a silicone membrane in the switch and operates its silver-nickel contact.
What it is used for
Pneumatic safety edges on bus, train and tram doors, roller gates and barriers, and as an opening signal from a pressure-sensitive profile on automatic gates.
Key features
- Response pressure from 2 mbar, maximum 150 mbar.
- Contact for 24 to 250 V AC or 24 to 50 V DC, 20 to 500 mA resistive.
- Mechanical service life of 50 million switching operations.
- Pressure equalisation of 100 ml/min at 2 mbar.
- Ambient temperature -30 to +70 °C.
- PBT GF30 housing, 49 x 41 x 34.5 mm.
Buying considerations
Choose whether pressure should close the contact (standard) or open it (DOE versions), and whether you need AMP connectors or a pre-housed switch. Housed versions come in an IP65 screw-on or IP54 snap-in enclosure with the switch fitted.
Installation considerations
Connect with 2/4 mm PVC or neoprene hose and Bircher connection pieces; hose length to the switch is up to 10 m and profiles up to 6 m. The D1CLIP bracket mounts the bare switch.
Compatibility
Used with Bircher DWS pneumatic pressure wave profiles. Bircher notes the system offers proven safety for doors and industrial doors when evaluated by a suitable controller.
Technical specifications
Key facts
- What is it?
- Safety Edges & MatsBrand Bircher, model DW40
- What is it used for?
- Pneumatic safety edges on vehicle doors
- Can it be used outdoors?
- IP65
- Which documents are available?
- Brochure, datasheet Open documents
- Can SecurityGearHub help with installation?
- Setup guidanceManuals, wiring guides and answers to setup questions. On-site work is arranged separately where available. Ask about installation
- Not stated by the manufacturer
- power, box contents
General
- Technology
- Pneumatic pressure wave switch, membrane actuated
- Application
- Pneumatic safety edges on vehicle doors, gates and barriers
- Response Pressure
- Min. 2 mbar, max. 150 mbar
- Pressure Equalisation
- 100 ml/min at 2 mbar
- Relay Contact Rating
- 24 to 250 V AC, 24 to 50 V DC; 20 to 500 mA (AC/DC resistive)
- Mechanical Service Life
- 50 million switching cycles
- Output
- NC or NO
Environment
- Operating Temperature
- -30 to +70 °C
- IP Rating
- Housed versions: IP65 (DWGK1) or IP54 (DWGK11)
Physical
- Dimensions
- 49 x 41 x 34.5 mm
- Housing Material
- PBT GF30; membrane silicone; contacts AgNi
- Warranty
- Manufacturer warranty under Bircher's terms. How claims work
Product attributes and shipping details
| Brand | Bircher |
|---|---|
| Version | DW40, DW40AMP, DW40DOE, DWGK1, DWGK1DOE, DWGK11, DWGK11DOE |
Downloads
Documentation
Series documents can differ from your exact model. Report a wrong or missing file
Works with this product
Relevant accessories
- Bircher D1CLIP Mounting Bracket for DW40 Pressure Wave SwitchD1CLIP
Why Mounting bracket for DW40 (article 209364). Condition: Bare switch versions.
Price on requestAdd to quote
Other models in the series
- Bircher D3-P Pneumatic Pressure Wave Switch (D3 Series)D3-P / D3-PB
Why D3 series switch with changeover contact and adjustable set pressure.
Questions about this product
Does the DW40 close or open its contact when pressed?
The standard DW40 closes the contact on pressure. The DW40DOE version opens it, according to the Bircher data sheet.
How much pressure triggers the switch?
Bircher states a response pressure of minimum 2 mbar; the product page notes that 3 to 4 mbar on the profile gives reliable switching.
Ask about this modelSetup, compatibility, what is in the box
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