
Fenwal 12-F27121-000-10 Mounting Head
The Fenwal 12-F27121-000-10 Mounting Head is a high-precision, vertical-mount Detect-A-Fire thermal detector engineered for critical fire suppression and alarm circuits. Rated for 275 degrees F, this rate-compensated detector utilizes a unique V-Fast response time index to ensure rapid activation during fast-growth fire events while effectively ignoring transient thermal gradients that cause false alarms in standard rate-of-rise units. The 300 Stainless Steel Shell and Hex Brass Mounting Head provide superior corrosion resistance and structural integrity in demanding environments like engine compartments or paint spray booths.
This close on rise heat detector features a blue color coding for easy field identification of its temperature set point. With a +/- 10 degrees F tolerance, the internal contacts are hermetically sealed to protect against dust, moisture, and vibration—common failure points in industrial HVACR and fire safety applications. Designed specifically for vertical orientation, the 12-F27121-000-10 ensures accurate thermal sensing by allowing the surrounding air to expand the outer shell, triggering the internal struts at a precise predetermined danger point.
Key Benefits
- Rate-Compensated Performance: Delivers faster response times in flash fires compared to fixed-temperature units.
- False Alarm Mitigation: Specifically designed to ignore rapid temperature fluctuations (up to 40°F/min) that do not reach the danger threshold.
- Self-Restoring Design: Automatically resets once the ambient temperature drops below the 275°F set point, facilitating system testing without component replacement.
- Industrial Durability: The 300 series stainless steel construction is tamper-proof and resistant to high-vibration exposure.
- Versatile Signaling: The normally open (NO) configuration is ideal for activating suppression agents like CO2, clean agents, or dry chemicals upon contact closure.
Common Questions
Can the 12-F27121-000-10 be mounted horizontally?
While technically functional in various orientations, this specific model is optimized and calibrated for vertical mount applications to ensure the fastest response time index in high-ceiling or open-space industrial environments.
What does the "Close on Rise" contact action signify for my wiring?
This unit remains in a normally open (NO) state during standard operation. Upon reaching the 275°F threshold, the contacts close, completing the circuit to trigger your fire alarm control panel (FACP) or release system.
Is this detector compatible with hazardous locations?
Yes, when installed with the appropriate explosion-proof junction box, these vertical Detect-A-Fire units are widely used in hazardous "Classified" locations due to their hermetically sealed internal contact area.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $308.29
-65%$308.29
$107.90Fenwal 12-F27121-000-10 Mounting Head
The Fenwal 12-F27121-000-10 Mounting Head is a high-precision, vertical-mount Detect-A-Fire thermal detector engineered for critical fire suppression and alarm circuits. Rated for 275 degrees F, this rate-compensated detector utilizes a unique V-Fast response time index to ensure rapid activation during fast-growth fire events while effectively ignoring transient thermal gradients that cause false alarms in standard rate-of-rise units. The 300 Stainless Steel Shell and Hex Brass Mounting Head provide superior corrosion resistance and structural integrity in demanding environments like engine compartments or paint spray booths.
This close on rise heat detector features a blue color coding for easy field identification of its temperature set point. With a +/- 10 degrees F tolerance, the internal contacts are hermetically sealed to protect against dust, moisture, and vibration—common failure points in industrial HVACR and fire safety applications. Designed specifically for vertical orientation, the 12-F27121-000-10 ensures accurate thermal sensing by allowing the surrounding air to expand the outer shell, triggering the internal struts at a precise predetermined danger point.
Key Benefits
- Rate-Compensated Performance: Delivers faster response times in flash fires compared to fixed-temperature units.
- False Alarm Mitigation: Specifically designed to ignore rapid temperature fluctuations (up to 40°F/min) that do not reach the danger threshold.
- Self-Restoring Design: Automatically resets once the ambient temperature drops below the 275°F set point, facilitating system testing without component replacement.
- Industrial Durability: The 300 series stainless steel construction is tamper-proof and resistant to high-vibration exposure.
- Versatile Signaling: The normally open (NO) configuration is ideal for activating suppression agents like CO2, clean agents, or dry chemicals upon contact closure.
Common Questions
Can the 12-F27121-000-10 be mounted horizontally?
While technically functional in various orientations, this specific model is optimized and calibrated for vertical mount applications to ensure the fastest response time index in high-ceiling or open-space industrial environments.
What does the "Close on Rise" contact action signify for my wiring?
This unit remains in a normally open (NO) state during standard operation. Upon reaching the 275°F threshold, the contacts close, completing the circuit to trigger your fire alarm control panel (FACP) or release system.
Is this detector compatible with hazardous locations?
Yes, when installed with the appropriate explosion-proof junction box, these vertical Detect-A-Fire units are widely used in hazardous "Classified" locations due to their hermetically sealed internal contact area.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Description
The Fenwal 12-F27121-000-10 Mounting Head is a high-precision, vertical-mount Detect-A-Fire thermal detector engineered for critical fire suppression and alarm circuits. Rated for 275 degrees F, this rate-compensated detector utilizes a unique V-Fast response time index to ensure rapid activation during fast-growth fire events while effectively ignoring transient thermal gradients that cause false alarms in standard rate-of-rise units. The 300 Stainless Steel Shell and Hex Brass Mounting Head provide superior corrosion resistance and structural integrity in demanding environments like engine compartments or paint spray booths.
This close on rise heat detector features a blue color coding for easy field identification of its temperature set point. With a +/- 10 degrees F tolerance, the internal contacts are hermetically sealed to protect against dust, moisture, and vibration—common failure points in industrial HVACR and fire safety applications. Designed specifically for vertical orientation, the 12-F27121-000-10 ensures accurate thermal sensing by allowing the surrounding air to expand the outer shell, triggering the internal struts at a precise predetermined danger point.
Key Benefits
- Rate-Compensated Performance: Delivers faster response times in flash fires compared to fixed-temperature units.
- False Alarm Mitigation: Specifically designed to ignore rapid temperature fluctuations (up to 40°F/min) that do not reach the danger threshold.
- Self-Restoring Design: Automatically resets once the ambient temperature drops below the 275°F set point, facilitating system testing without component replacement.
- Industrial Durability: The 300 series stainless steel construction is tamper-proof and resistant to high-vibration exposure.
- Versatile Signaling: The normally open (NO) configuration is ideal for activating suppression agents like CO2, clean agents, or dry chemicals upon contact closure.
Common Questions
Can the 12-F27121-000-10 be mounted horizontally?
While technically functional in various orientations, this specific model is optimized and calibrated for vertical mount applications to ensure the fastest response time index in high-ceiling or open-space industrial environments.
What does the "Close on Rise" contact action signify for my wiring?
This unit remains in a normally open (NO) state during standard operation. Upon reaching the 275°F threshold, the contacts close, completing the circuit to trigger your fire alarm control panel (FACP) or release system.
Is this detector compatible with hazardous locations?
Yes, when installed with the appropriate explosion-proof junction box, these vertical Detect-A-Fire units are widely used in hazardous "Classified" locations due to their hermetically sealed internal contact area.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












