McQuay 330423301 Detect-A-Fire® thermal detector is a dependable replacement option for compatible commercial HVAC, industrial, alarm, and fire suppression control systems requiring temperature-actuated protection.
 
This vertical-mount detector is factory set at 160 degrees F° and uses close-on-rise contact operation with a Quick Response Time Index and +7 degrees F° /-8 degrees F° tolerance for accurate heat detection at the preset activation point.
 
Built with a hex brass mounting head, 300 stainless steel shell, and black color coding for quick identification, it senses rising air temperature and triggers connected alarm or release circuits when protection is needed.
 
Its durable construction, precise temperature setting, and repeatable self-restoring operation help maintenance teams maintain consistent thermal detection performance.

The Detect-A-Fire® 12-E27121-000-03 directly replaces part number 12-X27121-000-160  Detect-A-Fire®.
 

Frequently Asked Questions  

• What type of systems can Detect-A-Fire® detectors help activate?

• Is this detector intended to reduce false alarms?

• Can this detector be mounted horizontally if needed?

• What kind of outlet box is recommended for installation?

• How often should Detect-A-Fire® detectors be tested?

• When should a Detect-A-Fire® detector be replaced?

• Can the sensing shell be painted or cleaned?

• Are Detect-A-Fire® detectors agency listed?

Yes. Fenwal Detect-A-Fire® detectors are listed by UL and ULC and approved by FM as fire detection thermostats and releasing devices, depending on contact operation and application.