Rate-of-rise Fixed Temperature Heat Detectors280B-PL Series
280B-PL Series ⭐
✅ heat detectors offer fixed temperature or combination rate-of-rise and fixed temperature detection ⭐
✅ Hotline 0917 911 1114
RATE-OF-RISE:A temperature increase at the sensor of 15°F (9°C) or more per minute activates the rate-of-rise feature. This closes the contacts in the sensor to transmit the alarm condition to the fire alarm control panel. When the rate-of-rise element alone has been activated, the sensor is self-restoring.
FIXED TEMPERATURE: If the temperature of the center disk rises to the sensor’s rated temperature, the fixed temperature element activates. This closes contacts in the sensor and transmits an alarm condition to the fire alarm control panel. The fixed temperature element is non-restorable and, when activated, the detector must be replaced. The need for replacement is indicated when the center disk has fallen free the detector.
Standard Features
• UL listed for 50 ft. (15.2m) spacing
• Single pole — normally open contact
• Low profile with mounting plate
• Pure white finish
• Mounting flexibility with screw terminals
• Easy twist-on installation
• On-site testing of rate-of-rise feature
• Positive operating indication — for fixed temperature elemen
Application
Heat detectors are most suitable for environments where rapid fire development can be expected. When selecting the location on the ceiling for the heat sensor, do not locate it in direct path of hot or cold air flow. Refer to the detector specifications for the recommended maximum spacing. Earlier detector response may be obtained by reducing the spacing between detectors.
Installation
Kidde 280B series heat sensors come standard with a white plastic reversible mounting plate. The plate is designed for surface or flush mounting and installs directly to a standard North American 3½ or 4 inch octagon box. Once the mounting plate is fixed, a simple twist will lock the sensor in place. It can be removed using a screwdriver to release the tamper-resistant locking finger. This helps prevent unauthorized removal. Rate-of-rise/Fixed Temperature Heat Detectors 280B-PL Series.
Mounting
The plastic mounting plate is molded to accommodate exposed wiring.
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Specifications
| Catalog Number | 281B-PL | 282B-PL | 283B-PL | 284B-PL |
| UL Temperature Rating | 135°F (57°C) | 194°F (90°C) | 135°F (57°C) | 194°F (90°C) |
|
UL Max Ambient Temp. at Ceiling |
100°F (38°C) | 150°F (66°C) | 100°F (38°C) | 150°F (66°C) |
| Detector Type |
Fixed Temperature and Rate-of- Rise Rate-of-rise: 15° F (9° C), self restoring |
Fixed Temperature Only | ||
|
UL Recommended Coverage |
2,500 ft.² (232 m²) | |||
| UL Recommended Spacing | 50 ft. (15.2 m) | |||
| FM Recommended Spacing | 30 ft. (9.14 m) | |||
|
UL Maximum Distance from Wall |
25 ft. (7.6m) any wall or projection extending down the ceiling more than 12 inches (305 mm) |
|||
| Contacts – Rating |
Single Pole Normally Open 3.0 amps at 6 to 125 Vac; 1.0 amp at 6 to 24 Vdc; 0.3 amps at 125 Vdc; 0.1 amps at 250 Vdc |
|||
| Operating Environment | Indoor – Dry | |||
| Agency Listings | UL, FM, CSFM | |||
Ordering Information
| Cat. No. | Description |
Ship Wt. lb (kg) |
| 281B-PL | Heat Detector, 135°F (57°C), Rate-of-Rise and Fixed Temperature | 1.0 (0.5) |
| 282B-PL | Heat Detector, 194°F (90°C), Rate-of-Rise and Fixed Temperature | |
| 283B-PL | Heat Detector, 135°F (57°C), Fixed Temperature | |
| 284B-PL | Heat Detector, 194°F (90°C), Fixed Temperature |
| Detector Accessories | |
| 280A-PL |
Plastic Mounting Plate – White, Reversible (included) |
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