Description
The Fenwal 12-H27121-000-08 Detect-A-Fire thermal fire detection switch is a high-reliability, rate-compensated heat sensor engineered for rapid response in commercial and industrial fire protection systems. Factory-set to activate at 600 °F (316 °C), this rugged detector closes its internal contact when a rapid temperature rise indicates a potential fire or overheat condition, sending a reliable signal to alarm panels, suppression systems, or control circuits.
Key Features
- High-Temperature Activation: Factory-set to close on temperature rise at 600 °F (316 °C) for dependable heat detection.
- Detect-A-Fire Technology: Combines fixed temperature sensing with rate-of-rise responsiveness for early detection of fire conditions.
- Self-Restoring & Testable: Automatically resets after cooling, eliminating the need for replacement after activation.
- Durable Construction: Stainless steel housing and brass mounting head ensure long-lasting performance in industrial conditions.
- Vertical Mount Design: Ideal for ceiling or vertical surface placement in detection zones.
- Wide Industrial Use: Suited for fire alarms, suppression system triggers, overheat monitoring, and safety shutdown circuits.






