Fenwal 12-A27020-000-04 Flush Mount
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Fenwal 12-A27020-000-04 Flush Mount

Fenwal 12-A27020-000-04 Flush Mount

The Fenwal 12-A27020-000-04 Flush Mount is a high-precision, rate-compensated thermal fire detector engineered for rapid response in commercial and industrial safety systems. Unlike standard fixed-temperature sensors, the Detect-A-Fire technology utilizes a stainless steel outer shell and internal expansion struts to accurately sense surrounding air temperature regardless of the fire growth rate. This specific 190 degree F Open on Rise model is factory-set to actuate at 190°F (87.8°C), providing reliable circuit interruption for releasing devices or alarm signaling. Designed for concealed wiring, the horizontal flush mount configuration integrates seamlessly into 4-inch octagonal electrical boxes, offering a low-profile aesthetic without compromising thermal sensitivity. With a strict +7/-8 degree F tolerance and a fast response time index, this sensor eliminates the false alarms common with rate-of-rise detectors by ignoring transient thermal shifts up to 40°F per minute, ensuring critical activation only during genuine overheat or fire conditions.

Key Benefits for Contractors:
  • Rate Compensation Technology: Provides an advantage over fixed-temperature units by eliminating response lag in fast-growth fires and preventing false trips from ambient heat spikes.
  • Reliable Construction: Features a hermetically sealed stainless steel shell that resists moisture, dust, and contamination for long-term stability in mechanical rooms or manufacturing floors.
  • Streamlined Installation: Specifically designed for horizontal flush mounting to maintain a professional, unobtrusive appearance in areas with concealed wiring requirements.
  • Self-Restoring Design: The mechanical sensing element resets itself after the temperature drops below the set point, allowing for system testing without replacing components.
  • High Electrical Rating: Rated for 5.0 Amps at 125 VAC, making it compatible with most standard fire alarm control panels and suppression release circuits.
Common Technical Questions:

Is the Fenwal 12-A27020-000-04 suitable for hazardous locations?
No, horizontal flush mount units are designed for "ordinary" (non-hazardous) locations. For Class I, Groups B, C, or D applications, a vertical mounting model with a hex-head brass or stainless steel fitting is typically required.

What is the difference between "Open on Rise" and "Close on Rise" models?
The 12-A27020 series is Normally Closed (NC) and opens the circuit upon reaching 190°F. This is standard for "fail-safe" releasing systems. For triggering an alarm circuit that requires a Normally Open (NO) contact, you would typically use the 27021 series.

Can I install this unit on a wall instead of a ceiling?
While Detect-A-Fire units are not position-sensitive, horizontal models are optimized for ceiling placement where thermal currents naturally collect. Always verify spacing requirements with your local AHJ (Authority Having Jurisdiction) to ensure compliance with NFPA standards.

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.

$241.19

Original: $689.12

-65%
Fenwal 12-A27020-000-04 Flush Mount

$689.12

$241.19

Fenwal 12-A27020-000-04 Flush Mount

The Fenwal 12-A27020-000-04 Flush Mount is a high-precision, rate-compensated thermal fire detector engineered for rapid response in commercial and industrial safety systems. Unlike standard fixed-temperature sensors, the Detect-A-Fire technology utilizes a stainless steel outer shell and internal expansion struts to accurately sense surrounding air temperature regardless of the fire growth rate. This specific 190 degree F Open on Rise model is factory-set to actuate at 190°F (87.8°C), providing reliable circuit interruption for releasing devices or alarm signaling. Designed for concealed wiring, the horizontal flush mount configuration integrates seamlessly into 4-inch octagonal electrical boxes, offering a low-profile aesthetic without compromising thermal sensitivity. With a strict +7/-8 degree F tolerance and a fast response time index, this sensor eliminates the false alarms common with rate-of-rise detectors by ignoring transient thermal shifts up to 40°F per minute, ensuring critical activation only during genuine overheat or fire conditions.

Key Benefits for Contractors:
  • Rate Compensation Technology: Provides an advantage over fixed-temperature units by eliminating response lag in fast-growth fires and preventing false trips from ambient heat spikes.
  • Reliable Construction: Features a hermetically sealed stainless steel shell that resists moisture, dust, and contamination for long-term stability in mechanical rooms or manufacturing floors.
  • Streamlined Installation: Specifically designed for horizontal flush mounting to maintain a professional, unobtrusive appearance in areas with concealed wiring requirements.
  • Self-Restoring Design: The mechanical sensing element resets itself after the temperature drops below the set point, allowing for system testing without replacing components.
  • High Electrical Rating: Rated for 5.0 Amps at 125 VAC, making it compatible with most standard fire alarm control panels and suppression release circuits.
Common Technical Questions:

Is the Fenwal 12-A27020-000-04 suitable for hazardous locations?
No, horizontal flush mount units are designed for "ordinary" (non-hazardous) locations. For Class I, Groups B, C, or D applications, a vertical mounting model with a hex-head brass or stainless steel fitting is typically required.

What is the difference between "Open on Rise" and "Close on Rise" models?
The 12-A27020 series is Normally Closed (NC) and opens the circuit upon reaching 190°F. This is standard for "fail-safe" releasing systems. For triggering an alarm circuit that requires a Normally Open (NO) contact, you would typically use the 27021 series.

Can I install this unit on a wall instead of a ceiling?
While Detect-A-Fire units are not position-sensitive, horizontal models are optimized for ceiling placement where thermal currents naturally collect. Always verify spacing requirements with your local AHJ (Authority Having Jurisdiction) to ensure compliance with NFPA standards.

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.

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Description

The Fenwal 12-A27020-000-04 Flush Mount is a high-precision, rate-compensated thermal fire detector engineered for rapid response in commercial and industrial safety systems. Unlike standard fixed-temperature sensors, the Detect-A-Fire technology utilizes a stainless steel outer shell and internal expansion struts to accurately sense surrounding air temperature regardless of the fire growth rate. This specific 190 degree F Open on Rise model is factory-set to actuate at 190°F (87.8°C), providing reliable circuit interruption for releasing devices or alarm signaling. Designed for concealed wiring, the horizontal flush mount configuration integrates seamlessly into 4-inch octagonal electrical boxes, offering a low-profile aesthetic without compromising thermal sensitivity. With a strict +7/-8 degree F tolerance and a fast response time index, this sensor eliminates the false alarms common with rate-of-rise detectors by ignoring transient thermal shifts up to 40°F per minute, ensuring critical activation only during genuine overheat or fire conditions.

Key Benefits for Contractors:
  • Rate Compensation Technology: Provides an advantage over fixed-temperature units by eliminating response lag in fast-growth fires and preventing false trips from ambient heat spikes.
  • Reliable Construction: Features a hermetically sealed stainless steel shell that resists moisture, dust, and contamination for long-term stability in mechanical rooms or manufacturing floors.
  • Streamlined Installation: Specifically designed for horizontal flush mounting to maintain a professional, unobtrusive appearance in areas with concealed wiring requirements.
  • Self-Restoring Design: The mechanical sensing element resets itself after the temperature drops below the set point, allowing for system testing without replacing components.
  • High Electrical Rating: Rated for 5.0 Amps at 125 VAC, making it compatible with most standard fire alarm control panels and suppression release circuits.
Common Technical Questions:

Is the Fenwal 12-A27020-000-04 suitable for hazardous locations?
No, horizontal flush mount units are designed for "ordinary" (non-hazardous) locations. For Class I, Groups B, C, or D applications, a vertical mounting model with a hex-head brass or stainless steel fitting is typically required.

What is the difference between "Open on Rise" and "Close on Rise" models?
The 12-A27020 series is Normally Closed (NC) and opens the circuit upon reaching 190°F. This is standard for "fail-safe" releasing systems. For triggering an alarm circuit that requires a Normally Open (NO) contact, you would typically use the 27021 series.

Can I install this unit on a wall instead of a ceiling?
While Detect-A-Fire units are not position-sensitive, horizontal models are optimized for ceiling placement where thermal currents naturally collect. Always verify spacing requirements with your local AHJ (Authority Having Jurisdiction) to ensure compliance with NFPA standards.

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.

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