The Edwards 439DEX-6AW is a 6-inch (152 mm) explosion-proof vibrating bell, 20-24 VDC, diode-polarized, finished in gray. Specifically, it is built for hazardous-location signaling where standard fire-alarm bells would pose an ignition risk.
First, the explosion-proof housing contains any internal arc within the bell enclosure. Then the diode-polarized circuit ensures the bell responds only to correct-polarity DC voltage. As a result, the 439DEX-6AW provides sustained ringing in petrochemical, chemical, and grain-handling environments without becoming an ignition source.
Verified Specifications
- Gong diameter: 6 inches (152 mm)
- Operating voltage: 20–24 VDC
- Current draw: 0.240 A
- Sound output: 89 / 83 dB
- Polarity: diode polarized (DC only)
- Color: gray housing
- Series: Adaptabel DC vibrating bell, hazardous location
Hazardous-Location Listings
Furthermore, the 439DEX series is designed for Class I Group C/D and Class II Group E/F/G hazardous locations. Therefore, it suits petrochemical refineries, chemical processing plants, paint manufacturing facilities, and similar sites with potentially flammable atmospheres. However, confirm the exact division (Division 1 vs Division 2) and group rating against your hazardous-area classification before specifying.
How the 439DEX-6AW Differs from the 439D-6AW-R
The 439D-6AW-R is the standard (non-hazardous) 24 VDC red fire-alarm bell. Alternatively, the 439DEX-6AW is the explosion-proof equivalent for hazardous locations. Specifically, the higher current draw (0.240 A vs 0.085 A) reflects the more robust hazardous-location striker assembly.
Order or Get Application Help
To order the Edwards 439DEX-6AW, call 1-888-557-0558. Also, you can email sales@lifesafetycom.com.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 7.7 lbs |
|---|---|
| Dimensions | 11.5 × 11.5 × 6.5 in |
| Condition | New |
| Manufacturers | Edwards |
| Part Type | Replacement Part |
