Specifications

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Hazardous Location Devices
Initiating
Devices
Notification
Appliances
Hazardous Location
Devices
Initiating Devices
Weather/Explosion proof heat detectors
Series 500 heat sensors are designed for use in applications requiring
protection against weather, moisture (internal condensation), and explo-
sive atmospheres. Heat sensors are normally-open devices designed to
close an electrical circuit upon activation. Sensors use dual action, electric
fire detection thermostats that employ two independent methods of detec-
tion: rate-of-rise and fixed temperature.
Weather/Moisture Proof Models (WPBMPB) consist of a cast metal box,
gasket and special steel cover plate integrated with the sensor. A crossed
wire guard is added for extra protection. The emerging wire points are
sealed with epoxy, increasing resistance to moisture. The cast metal box
has four wire entrances for ½-inch rigid conduit. The unit offers combined
protection against weather and condensation in the conduit.
Explosion/Moisture Proof Models (EPBMPB) consist of a cast metal box,
cover plate and modified 500 Series sensor. The backbox has two opposing wire entrances threaded for ½-inch rigid
conduit. The box, cover and base are precision machined for extremely close tolerance fit. Explosion proof models are
available in a moisture proof version, which includes a moisture-resistant gasket.
WPBMPB501 Weather/Moistureproof rate-of-rise and fixed temp. sensors (136°F/58°C) Catalog Sheet: 85001-0393
EPBMPB501 Explosion/Moistureproof rate-of-rise and fixed temp. sensors (136°F/58°C) Catalog Sheet: 85001-0393
WPBMPB502 Weather/Moistureproof rate-of-rise and fixed temp. sensors (190°F/88°C) Catalog Sheet: 85001-0393
EPBMPB502 Explosion/Moistureproof rate-of-rise and fixed temp. sensors (190°F/88°C) Catalog Sheet: 85001-0393
WPBMPB503 Weather/Moistureproof fixed temperature sensor (136°F/58°C) Catalog Sheet: 85001-0393
EPBMPB503 Explosion/Moistureproof fixed temperature sensor (136°F/58°C) Catalog Sheet: 85001-0393
WPBMPB504 Weather/Moistureproof fixed temperature sensor (190°F/88°C) Catalog Sheet: 85001-0393
EPBMPB504 Explosion/Moistureproof fixed temperature sensor (190°F/88°C) Catalog Sheet: 85001-0393
Hazardous location fire alarm station
The XAL-53 is an extremely rugged double-action fire alarm station suitable for hazardous locations. The
device is activated by lifting the front cover and pulling down the ring. This two-step process prevents
unintentional operation.
XAL-53 Hazardous Location Fire Alarm Station Catalog Sheet: 85001-0371
WPBMPB
(weatherproof/
moistureproof)
EPBMPB
(explosionproof/
moistureproof)