DETECT-A-FIRE® Rate-Compensated Heat Detectors
Proven Performance. Predictive Precision.
For more than 65 years, the DETECT-A-FIRE® (D-A-F) detector has set a trusted standard in heat detection technology. Its innovative, rate-compensated design ensures fast, accurate activation across a wide range of fire conditions, delivering reliable performance and eliminating common challenges like activation lag or nuisance alarms.
Built from stainless steel with a hermetically sealed contact assembly, each detector is engineered for repeatable, long-life performance. Whether protecting industrial process lines, ovens, paint spray booths, turbines, or dust collectors DETECT-A-FIRE® reliably remains the “heart” of many fire protection systems.
Key Advantages
- Rate-Compensated Design
Anticipates fire conditions by activating slightly below the set temperature in fast-rising heat events, ensuring earlier response without false trips. - Self-Restoring
Resets automatically after activation—no replacement parts, no downtime. - Rugged Construction
Stainless steel shell withstands vibration, shock, and harsh environmental conditions.
- Flexible Mounting
Available in vertical, horizontal, and pendant configurations for a wide variety of applications. - Precision Factory Calibration
Every unit undergoes thermal stabilization, burn-in, and 100% functional testing to guarantee consistent performance across all operating ranges. - Certified Reliability
UL, ULC, FM, and CE approved for use in hazardous and general industrial zones.
Applications:
The DETECT-A-FIRE® detector is ideal for use with Clean agent, CO₂, Wet and Dry chemical, or Water suppression systems for protection of:
- Power generation turbines
- Commercial and industrial cooking operations
- Industrial ovens, paint spray booths, and dust collectors
- Marine and offshore spaces and processes
- High-vibration or high-temperature manufacturing environments
- Outdoor areas such as gas stations or assets such as off-road vehicles where ambient temperatures fluctuate but precision activation is essential
How It Works:
Traditional detectors often lag or misfire under rapid temperature changes. DETECT-A-FIRE® solves this through a rate-compensated mechanical design:
- The outer shell expands quickly in heat, while internal struts expand more slowly.
- This temperature differential causes the contacts to close slightly before the full calibrated setpoint, “anticipating” fire conditions during fast-developing events.
- In slow, steady heating, the detector activates right at its precise setpoint, ensuring accuracy under any growth rate.
- This patented mechanism enables the D-A-F to perform dependably in both gradual smoldering fires and sudden flash events, making it one of the most versatile heat detectors available today.
System Architecture
Models & Temperature Ratings
Available in a variety of temperature settings (ranging from 140°F to 725°F / 60°C to 385°C) and mounting types to suit different applications.
| MODEL | MOUNTING TYPE | TYPICAL APPLICATIONS |
|---|---|---|
| D-A-F Vertical | Ceiling mount | General facility or warehouse spaces |
| D-A-F Horizontal | Wall or duct mount | Process lines, machinery, confined spaces |
| D-A-F Pendant | Overhead or recessed | Marine and industrial equipment zones |
Each detector is factory-set and sealed for the specified temperature rating and can be wired for open or closed-circuit operation as required by system design.
Technical Specifications
| PARAMETER | SPECIFICATION |
|---|---|
| Temperature Range | 140°F–725°F (60°C–385°C) |
| Rate Compensation Range | 10°F–40°F/min rise |
| Contact Rating | 5 A @ 120 VAC; 1 A @ 24 VDC |
| Enclosure | Stainless Steel, Hermetically Sealed |
| Reset | Self-restoring |
| Mounting Types | Vertical, Horizontal, Pendant |
| Approvals | UL, ULC, FM, CE, RoHS Compliant |
Maintenance & Testing
DETECT-A-FIRE® detectors are repeatable and testable.
- Use controlled heat testing at rates below 1°F per minute to ensure accurate calibration behavior.
- Avoid oil bath or direct flame testing to prevent misinterpretation of activation behavior.
- Inspect for physical integrity and verify wiring annually per NFPA 72 recommendations.
Resources
Data Sheet: DETECT-A-FIRE® Detection and Release Devices (F-12-0-001)
Technical Article: DETECT-A-FIRE® Principles (F-12-1001)
Declaration of Conformity – CE & DoC (CERT_DAF_DoC_CE_D)
Brochure: Kidde Fire Systems Capabilities (BR101_2023)
Newsletter: The Front Burner – Spring 2021 Feature on D-A-F
Resource links coming soon!
Built for Every Fire Protection Challenge
Rugged, repeatable, and field-proven, DETECT-A-FIRE® detectors are designed to protect what matters most — with precision activation that anticipates danger before it strikes.
