Kidde-Fenwal 27121-0-325

The Kidde-Fenwal 27121-0-325 is a vertical-mount Detect-A-Fire rate-compensated heat detector, factory-set to close its contacts at 325°F. It's widely used as the detection element in fire suppression and release systems, triggering the release of clean agent, CO2, water, or dry chemical extinguishants when the surrounding air reaches its set point.

Key Features

• Rate-compensated design senses true ambient air temperature, avoiding both the lag of fixed-temperature detectors and the false alarms common to rate-of-rise types
• Self-resetting and testable, with nothing to replace after activation (unless damaged)
• Factory-set temperature rating for consistent, reliable performance
• Internal contact area hermetically sealed in a stainless steel shell

Technical Specifications

• Model: 12-X27121 series, vertical mount, normally open, closes on temperature rise
• Temperature setting: 325°F (+/-10°F tolerance)
• Mounting: 1/2-14 NPT into a suitable listed fitting per NEC/AHJ requirements
• Electrical rating (resistive only): 5.0A at 125 VAC, 0.5A at 125 VDC, 2.0A at 24 VDC, 1.0A at 48 VDC
• Approximate weight: 5 oz per unit
• Spacing: up to 50 ft (UL/ULc), 25 ft (FM)

Certifications

• UL and ULC Listed as a fire detection thermostat and releasing device
• FM Approved
• CE Listed per IEC 60947-5-1