Mars Air Systems J0028

Mars Air Systems J0028, Relay with Time Delay, Mechanical Universal Surface-Mounted Roller/Plunger Switch, 115v

$330.50 /ea

* Lead times vary based on manufacturer stock. Once your order has been processed, we will provide an estimated ship date.

Since this item is not be normally stocked in our warehouse, it may be shipped directly to you from the manufacturer or brought into our warehouse with our next stock order. As soon as the manufacturer provides us with your estimated shipping date, we will let you know. If you need your item by a certain date, please contact us before placing your order or leave a note at the checkout page, letting us know when you need it.

Mars Air Systems J0028 Overview


  • Compatible with LPV2, LPN2, STD2, N2, QP10 series air curtains
  • Time delay option – Field adjustable (6s-20m) delay on break. Delay keeps air curtains ON after door closes
  • UR (UL Recognized) and rated for NEMA 1 (field installed by others)
  • Solid State Controllers
  • Used when low voltage automatic control of an air curtain(s) is required
  • Compact control package for limited space installations
  • Steel Mechanical Universal Surface-Mounted Plunger/Roller Switch + Relay With Time Delay 115v (99-014 + 99-050)
  • Single pole terminal (1P) normally closed (NC) and normally opened (NO) contact
  • Relays require at least one switch to function, and so are available in Control Kits only.

Note: Second switch required for double door. In multiple-door installations, one relay controls multiple switches.

Mars Air Systems Warranty:

1 Year Parts

Special Order Item:

This item might not be returnable and in some instances cannot be canceled once the order has been placed.

Product Brand

J0028 Resources

Mars Air Systems J0028 Specifications


1/2 HP
Single Phase
Switch Style
Combination Roller / Plunger
115 Volts
Product Condition

Compatible Products

Models numbers shown are for reference only, may not be listed, may vary by serial number and subject to change without notice. Please contact us to confirm the proper item to be used with your model.

QP10 Series


Manufacturer Warranty All items that include a warranty are based on the manufacturer's warranty policy. Purchasers are subject to working directly with the manufacturer to start & finish the warranty process. Note: Some manufacturers' warranties may not cover products when used in a residential setting. To ensure your intended use is covered, please contact us to verify the warranty terms before purchasing.
1 Year Parts

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