IronAxis

IronAxis Industrial Supply

IronAxis is a U.S.-based B2B supplier of industrial equipment, instruments, machinery, food processing systems and new energy solutions for manufacturers, labs and engineering companies.

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A401 Air Pressure Sensing Switch Differential Negative 20 ~ 150Pa

Huizhou Regal Controller Technology Co., Ltd.

Air Pressure Sensing Switch DescriptionThe A401 air pressure sensing switch is a single pole single throw normally open type switch with 2 forward terminals, which have 187#(4.8*0.5mm) and 250#(6.3*0.8...

Sensors & Transmitters Huizhou Regal Controller Technology Co., Ltd. 30 Dec 2025 ( )

Get Your Quote Now : US$ 1 ~ 5/ Piece

Air Pressure Sensing Switch Description

The A401 air pressure sensing switch is a single pole single throw normally open type switch with 2 forward terminals, which have 187#(4.8*0.5mm) and 250#(6.3*0.8mm) for your options. Kindly remind that the size of the terminals and direction is for theapplication to connect easily, if you have another requirement please feel free to contact us or visit our air pressure switch page tocheck.

Because of the patented design of the A4 series, we can control the pressure switch in a very small differential force, which is 10Pa which is smaller than most of the pressure switches on the market.

This air pressure sensing switch is the negative type whose working pressure range is from 20pa to 150pa and its set ON and set OFF pressure is available for customization. Meanwhile, the positive pressure type is also available. Besides, it also hasa wide working temperature range(-40 to 110 ℃) so that it can reduce the effect of weather.

Generally, the A401 air pressure sensing switch can be used in the wall-hanging boiler furnace, gas water heater, HVAC system product,VAC system product, and so on. What’s more, if you need the electrical type air pressure sensors,please visit our product page.

A4 Air Pressure Switch Size

A401 Air Pressure Sensing Switch Specification

Model NumberA401 Air Pressure Sensing Switch
Working MediumAir or Tail gas
Terminal TypesStandard 187 Quick Connect (4.8*0.5mm)
Tube Interface6.3 outer diameter which is suitable for the 5mm inner diameter tube
CircuitSPST NO
Rating1A  24VDC & 0.5A 125/250VAC
Withstand Voltage3000Pa(0.5Psi)
Electrical Life25000000 cycles
Gas recovery outletNegative
Working Temperature-40 to +110℃

Technical Specifications

Item Specifications Remarks
Update Date Huizhou Regal Controller Technology Co., Ltd. 2025
Lead time within 30 days Can be expedited
Material See product manual Request Inspection Report
Application Applicable to multiple industries Complies with standards
Keywords Electrical Equipment,Supplies,Switches

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