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Fire Alarms

MPEX Explosion-Proof Fire Alarm Pull Station

  • Available in 120VAC
  • Highly visible red enclosure
  • Lift cover and pull down ring to activate
  • Approved for Class I, Division 1 explosion-proof applications
  • UL and ULC Listed, CSA Certified, CSFM Approved

The Model MPEX Explosion-Proof Pull Station is designed for harsh environments. The unit is rated for Class I, Division 1, Groups C & D; Class II, Division 1, Groups E, F & G; and Class III. MPEX is rated NEMA 7 for Groups C & D and NEMA 9 for Groups E, F & G.

The Model MPEX Explosion-Proof Pull Station is designed for hazardous locations where flammable gases, vapors, combustible dusts or easily ignitable fibers are present. The unique swing-up front cover exposes a pull-down ring which activates the alarm; this two-step process prevents accidental activation. The MPEX is reset by depressing the shaft and returning the plate to its original position. Contacts on the unit are rated 120VAC, 60Hz at 6 amps continuous.

The enclosure is made of copper-free cast aluminum alloy. Installation is made easy via the feed through 3/4" conduit openings found on either end of the MPEX. It is painted bright red for high visibility and has clearly marked operating instructions on the face plate.


Part # Description Ship Weight Net Weight  
MPEX Pull station, explosion-proof 2.7 lbs. 2.4 lbs. Add to Quote >


Part # Description Ship Weight  

Replacement Parts

Description Part #  


Listed By Underwriter's Laboratory (ULus)
Fire alarm devices for use in hazardous locations UHMV_E162478.pdf
Listed By Underwriter's Laboratory Canada (ULC)
Fire Alarm Boxes UHMVC_4012.pdf
Certified by CSA International
Signal appliances, miscellaneous, for hazardous locations 4818_03_1542433.pdf
Listed By California State Fire Marshall (CSFM)
Boxes and pull stations 7150_0811_125.pdf



Voltage 120VAC
Mount Wall
Enclosure Rating

NEMA 7 for Groups C & D

NEMA 9 for Groups E, F & G

Relay Ratings 120VAC, 60Hz at 6 Amps Continuous
Height 6.4 IN
Width 3.1 IN
Depth 4.1 IN
Federal Signal distributed by Gross Automation - Brookfield, WI - Phone: (262) 252-1600 - Fax: (262) 252-1616
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