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280B-PL Series

Rate-of-Rise and Fixed Temperature Heat Detectors

Description


  • Low profile with wide base

  • Positive fixed temperature operating indication

  • On site testing of rate-of-rise feature


The 280B-PL Series heat detectors offer fixed temperature or combination rate-of-rise and fixed temperature features. The heat detector is available with a white plastic reversible mounting plate. The plastic plate can be used for either flush or surface mounting. It includes a white skirt which covers the space between detector base and the mounting surface.

*NOTE: Maximum detector coverage has been determined by UL to provide detection time equal to sprinkler devices spaced at 10 ft (3.05m) intervals on a smooth ceiling 15 feet 9 inches (4.8m) high. Higher ceilings may adversely affect detection time. Earlier detection may be obtained by reducing the spacing between detectors. (See NFPA 72, Chapter 5)

Detector twists and locks onto mounting plate. Mounting plate may be surface mounted or mounted onto any 3 1/4" (83mm) or 4" (102mm) octagon box.

280B-PL Series

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Catalog Numbers

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Catalog Number
Description
  280A-PL

Reversible Mounting Plate for 280 Heat Detectors

$6.70
  281B-PL

Heat Detector
6-125 VAC, 3 A; 6-28 VDC, 1A; 125 VDC, 0.3 A; 250 VDC, 0.01 A

$20.60
  282B-PL

Heat Detector
6-125 VAC, 3 A; 6-28 VDC, 1A; 125 VDC, 0.3 A; 250 VDC, 0.01 A

$20.60
  283B-PL

Heat Detector
6-125 VAC, 3 A; 6-28 VDC, 1A; 125 VDC, 0.3 A; 250 VDC, 0.01 A

$20.60
  284B-PL

Heat Detector
6-125 VAC, 3 A; 6-28 VDC, 1A; 125 VDC, 0.3 A; 250 VDC, 0.01 A

$20.60

Specifications

Approvals

Agency Approvals
UL Listed FM Approved CSFM Listed
Specifications
  • Single circuit normally open contact rated at 3 amps at 6 to 125V AC; 1.0 amps at 6 to 28V DC, 0.3 amps at 125V DC, and .01 amps at 250V DC
  • Maximum coverage 2,500 sq. ft. (232.25 sq. m)
  • UL spacing: 50 ft (15.24m)
  • FM spacing: 30 ft (9.14m)
  • Color - white


Cat. No.DescriptionRate-of-Rise
Rating
UL Temp.
Rating F
UL Max. Ambient
Ceiling Temp. Rating F
281B-PLROR & Fixed15F/min.135100
282B-PLROR & Fixed15F/min.194150
283B-PLFixed--135100
284B-PLFixed--194150
Images

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Documentation

Catalog Pages
Data Sheets
Fire Alarm Sales Tools
Installation Instructions
Technical Bulletins