Johnson Controls DMPR-RS312 Fusible Link

The Johnson Controls DMPR-RS312 is a high-performance 212-degree fusible link engineered for critical fail-safe activation in fire and smoke damper assemblies. As the direct DMPR-RS202 replacement, this heavy-duty heat-responsive device is essential for maintaining the UL safety rating of FOVHN series fire dampers. In the event of a thermal excursion reaching 212?F (100?C), the fusible link melts, triggering the immediate mechanical closure of the damper blades to prevent flame and smoke migration through the ductwork. Designed for precision and reliability, the DMPR-RS312 features a robust B-style link configuration that ensures a secure fit within the jackshaft and drive linkage of Johnson Controls damper hardware. For contractors performing preventative maintenance or emergency repairs, migrating to this updated fusible link ensures full compatibility with modern HVAC fire protection systems and adherence to current life-safety codes. This component is a 0.04-lb mission-critical part for commercial fire damper maintenance.

• Precision Thermal Activation: Engineered to fail at exactly 212°F to meet specific high-temperature environment requirements.
• Drop-in Compatibility: Specifically designed as the updated technical successor to the legacy DMPR-RS202 model.
• UL-Classified Component: Maintains the original manufacturer's safety certifications for FOVHN fire dampers.
• Corrosion-Resistant Construction: Built to withstand the fluctuating humidity and airflow conditions common in industrial HVAC ducting.

Is the DMPR-RS312 compatible with older DMPR-RS202 installations?
Yes, the DMPR-RS312 is the official replacement part for the DMPR-RS202 and is designed to fit the same bracketry and linkage systems.

What damper models use this 212-degree link?
This specific link is typically utilized in Johnson Controls FOVHN fire dampers and high-temperature FS-1300 series smoke/fire damper assemblies.

Can this link be field-installed to change a damper's temperature rating?
While replacement of an existing 212°F link is a standard field procedure, changing the temperature rating of a damper may requires approval from the local authority having jurisdiction (AHJ) to maintain its UL listing.

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.