Fenwal 12-G27121-000-07 Detect

The Fenwal 12-G27121-000-07 is a high-precision rate-compensated heat detector engineered for demanding industrial and commercial fire protection systems. This Detect-A-Fire unit features a 450°F (232°C) fixed-temperature threshold with a Close on Rise contact action, making it an essential component for triggering fire suppression release or high-temperature alarms. Built with a rugged 300 stainless steel shell and a hex brass mounting head, it provides superior corrosion resistance and durability in harsh environments. The vertical mount configuration and V-Fast response time index ensure immediate detection of thermal threats while mitigating false alarms caused by transient heat spikes. Identified by its green color coding, this model is technically identical to the 12-G27121-000-450 and maintains a precise +/-15°F tolerance. For contractors and technicians, this hermetically sealed sensor offers repeatable, self-restoring performance without the need for manual resets after cooling, ensuring continuous protection for high-value equipment and hazardous process areas.

Key Benefits

• Rate-Compensated Sensing: Merges the benefits of both fixed-temperature and rate-of-rise detection to eliminate lag in fast-growth fires and prevent false trips from minor thermal fluctuations.
• Rugged Construction: Features a 300 stainless steel shell and hex brass mounting head for long-term reliability in industrial settings.
• High-Temperature Reliability: Factory-preset to 450°F with a Close on Rise contact, ideal for extreme environment safety protocols.
• Simplified Installation: The vertical mount design allows for seamless integration into ductwork, ceilings, and industrial enclosures.
• Self-Restoring Operation: The sensor resets automatically once ambient temperatures drop below the set point, reducing maintenance downtime.

Common Questions

What is the difference between this and the 12-G27121-000-450?
These parts are technically identical. The Fenwal 12-G27121-000-07 is the current manufacturing designation for the 450-degree vertical brass unit with Close on Rise contacts.

Does this unit require a manual reset after an alarm event?
No. The Detect-A-Fire series is designed to be repeatable and self-restoring. Once the temperature falls below the 450°F threshold (+/- tolerance), the internal contacts will return to their normally open state.

What does the green color coding signify?
In the Fenwal system, the green color coding is the visual identifier for the 450°F temperature rating, allowing technicians to verify the correct part is installed in the field without removing the unit.

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.