Potter Amseco CR-135EWT Explosion Proof Fixed Temperature Heat Detector, 135 Degrees, Rate-of-Rise

The CR-135EWT is a combination rate-of-rise and fixed temperature detector in a case aluminum housing suitable for use in the hazardous locations described above. A set of normally open contacts will close when the ceiling temperature increases at a minimum rate of 15F (8.4C) per minute. Closing the contact initiates the direct alarm sequence. Independent of the rate-of-rise operation, the fixed temperature portion consists of a spring-loaded plunger retained by a fusible alloy that releases when the ceiling temperature reaches 135F (57C). When released, the plunger strikes the set of contacts and holds them closed. Spacing between detectors on an uninterrupted ceiling is 50 ft. (15.2m) for the rate-of-rise and 30 ft. (9.1m) for the fixed temperature portion. Distance from any wall or partition is 25 ft. (7.5m) and 15 ft. (4.5m) respectively.


Also known as: PL-1000148, CR135EWT

Technical Specifications: Weight: 1.7 pounds (800 grams) Contact Ratings: 3 Amps at 125 VAC, 1 Amp at 28 VDC, 0.3 Amps at 125 VDC, 0.1 Amps at 250 VDC Detector Housing: ULC Listed, Explosion Proof, Water and Dust Tight UL and ULC Listed: Detector

For more information about the Potter / Amseco CR-135-EWT, please contact us.