MPL 503E Air Pressure Switch - Adjustable

Part# 11-02379
MFR Model# MPL503E


MPL 503 Series pressure switch sensitive inches/H 2 O

Accuracy and reliability offer the designer an excellent general purpose low pressure to electric interface for monitoring and control applications.
The miniature size make the 503 Series ideal for OEM applications.

Range E Measures Adjustable: 40" to 100" of water
California Prop 65 Warning Symbol

WARNING: The product may contain and/or expose you to a chemical(s) or substance(s) which are known to the State of California to cause cancer and/or birth defects or other reproductive harm.

  • Frequently Purchased With
  • Customers Also Viewed
  • Related Items



Please note, Pilotshop's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Pilotshop assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Are these switches adjustable so they can be used to make contact at various air speeds? Regarding Part # 11-02379

Per supplier, the MPL-503 series is adjustable as long as there is a letter at the end of the part number, so the MPL-503E is adjustable. Specifically for 40-150 of water.

Q: Is the MPL 503E Air Pressure Switch normally open or closed?

The MPL 503E Air Pressure Switch in normally open and activates at 42 knots.

Q: Is the MPL 503E Pressure Switch switch FAA approved?

No, this switch is not FAA Approved for use in certified aircraft.

Q: Are the details of the electrical wiring available for the MPL 503E pressure switch available?

This unit is wired as a standard switch with an input from an air source to activate/deactivate.

Q: Would this switch go in the pitot line and power the hobbs once a preset airspeed has been reached?

This product is an air pressure switch to power the Hobbs. Look at part 10-00813 or for water application look at part 10-00326.