Fenwal 12-E27121-000-03 Sensor

The Fenwal 12-E27121-000-03 is a precision-engineered Detect-A-Fire vertical mount thermal sensor designed for rapid response in critical fire suppression and overheat signaling applications. This rate-compensated fire detector utilizes a 300 stainless steel shell and a hex brass mounting head to ensure hermetically sealed reliability in harsh environments. Configured as a close on rise thermal switch, it features a factory-set activation point of 160°F (71°C) with a strictly maintained tolerance of +7°F/-8°F. The black color-coded head identifies its specific temperature range, making it a drop-in replacement for the 12-E27121-000-160 model. Engineered for high-precision fire detection, the 12-E27121-000-03 negates the thermal lag common in conventional fixed-temperature sensors by utilizing an outer shell that expands quickly upon exposure to heat, providing a quick response time index that is essential for triggering CO2, dry chemical, or clean agent suppression systems.

Key Benefits for Contractors:

• Rate-Compensated Accuracy: Provides accurate thermal sensing regardless of how fast the fire develops, eliminating the delays found in standard heat detectors.
• Industrial Durability: The 300 stainless steel construction and vibration-resistant design make this sensor suitable for engine compartments, paint spray booths, and industrial range hoods.
• Standardized Compatibility: Features an SPST switch and vertical orientation for seamless integration into existing UL Listed and FM Approved fire alarm control panels.
• Reduced False Alarms: The tamper-proof, factory-set design ensures the sensor remains at its calibrated set-point without drifting due to environmental shifts.

Common Questions Regarding the 12-E27121-000-03:

What is the difference between this and a standard fixed-temperature sensor?
Unlike standard sensors that suffer from thermal lag, this Fenwal Detect-A-Fire sensor uses rate compensation to trigger at its rated 160°F set-point even during rapid temperature spikes, ensuring faster suppression activation.

Can this unit be mounted horizontally?
No, the 12-E27121-000-03 is specifically designed and calibrated for vertical mounting. For horizontal applications, a different model in the Detect-A-Fire series must be selected to maintain proper detection characteristics.

Is the 12-E27121-000-03 compatible with 12-E27121-000-160?
Yes, these two part numbers are technically identical and share the same 160°F close on rise specifications and physical dimensions.

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.