12-H27121-000-08 | Fenwal Detect-A-Fire 600°F Close-on-Rise Temperature Switch

Description 

The Fenwal 12-H27121-000-08 Detect-A-Fire device is a 600°F Close-on-Rise temperature switch used in fire detection and suppression systems. Built with a stainless-steel shell and brass mounting head, it provides reliable, repeatable performance for overheat sensing, alarm activation, and extinguishing system release.

Technical Specifications 

Information About 12-H27121-000-08

The 12-H27121-000-08 is part of Fenwal’s Detect-A-Fire series, a proven line of temperature-sensitive devices used in thousands of fire protection systems worldwide. Factory-calibrated at 600°F, this unit is designed to close contacts upon temperature rise, triggering alarms or initiating extinguishing agent release. It is constructed with a hermetically sealed stainless-steel shell, shock- and vibration-resistant design, and color-coded for easy identification. Its versatility allows use in applications ranging from industrial hazard protection to clean agent, CO₂, water, and dry chemical suppression systems.

Key Features:

• Detect-A-Fire Core Device: Integral to fire suppression and overheat protection systems.
• Temperature Rating: Factory-set to 600°F with ±20°F tolerance.
• Close on Rise Function: Contacts close as temperature rises, initiating alarm or release.
• Durable Build: Stainless steel shell and brass hex mounting head for reliability.
• Vibration Resistant: Rugged design withstands industrial environments.
• Hermetically Sealed: Internal contact area fully sealed for longevity.
• Color Coded: Orange coding for 600°F setpoint identification.
• Self-Restoring: Resettable and reusable without replacement.

The 12-H27121-000-08 delivers the reliability and precision required for critical fire detection and suppression control.