Kidde Fenwal 12-E27121-020-225 DETECT-A-FIRE Switch, Vertical Mount, 225°F, 5A

Ensure rapid, dependable fire response in critical facilities with the Kidde Fenwal Detect-A-Fire heat detector. Designed for vertical ceiling mounting, this thermal detector activates at a precise 225°F set point and closes contacts on temperature rise—providing a straightforward, trusted input for fire alarm panels, suppression releases, and building monitoring systems. The device’s rate-compensated sensor improves accuracy versus basic fixed-temperature heads, reducing nuisance trips while ensuring activation under real fire conditions.

Built for professional installations, the Detect-A-Fire features a 1/2-14 NPT thread for fast mounting into junction boxes and 6-inch leads to simplify wiring to control equipment. Contacts are rated 5A at 125 VAC (and 0.5A at 125 VDC), making the unit compatible with a wide range of release and supervision circuits. CE, UL, ULC and FM approvals — plus explosion-proof classification for Class I and II environments — allow dependable use in industrial, data center, warehouse and hazardous-area applications.

Integrate this Kidde Fenwal heat detector into your security, surveillance and fire monitoring strategy for reliable thermal protection. Contact us to specify or order for your next installation.

• Fast, reliable thermal detection at a 225°F set point to reduce response times and limit fire damage
• Vertical-mount design with 1/2-14 NPT threading for quick ceiling installation into standard junction boxes
• 5A contact rating (125 VAC) and .5A (125 VDC) compatibility for seamless integration with fire alarm, release and monitoring systems
• Rate-compensated sensing minimizes false alarms by accurately tracking air temperature rise
• Certified for demanding environments (UL, ULC, FM, CE) and explosion-proof rated for Class I & II hazardous areas