Johnson Controls DMPR-RS311 Fusible Link

As a direct replacement for the legacy DMPR-RS201, the Johnson Controls DMPR-RS311 is a critical fire safety component engineered specifically for FD-1300 Series dynamic multi-blade fire dampers. This 165-degree fusible link is designed to provide thermal-triggered closure in high-velocity HVAC systems, ensuring compliance with UL 555 and NFPA 90A standards. The DMPR-RS311 functions as a mechanical release; once ambient temperatures reach 165°F (74°C), the link separates, allowing the damper?s high-torque spring to snap the blades into a locked-closed position. This rapid response is vital for maintaining the integrity of fire partitions during a thermal event. Built for industrial durability, it integrates seamlessly into the dual-linkage systems of 1-1/2 hour rated dampers, providing reliable fire damper protection for both vertical and horizontal mounting configurations. For technicians performing HVAC system troubleshooting or routine safety inspections, utilizing this exact Johnson Controls replacement part is essential to maintain the original equipment manufacturer's dynamic airflow ratings and safety certifications.

• Precise 165°F Separation: Designed to actuate at exactly 165 degrees Fahrenheit to prevent the spread of fire through ductwork.
• OEM Compatibility: Specifically engineered for the Johnson Controls FD-1300 Series to ensure exact fit and finish.
• Direct Replacement Logic: Effectively replaces the discontinued DMPR-RS201 without requiring hardware modifications.
• Safety Integrity: Vital component for maintaining UL 555 fire-resistance ratings in commercial and industrial HVAC installations.

• Is the DMPR-RS311 compatible with my older fire damper? Yes, this model is the official direct replacement for DMPR-RS201 links used in older FD-1300 assemblies.
• Can I use this link in a dynamic smoke control system? This link is specifically rated for the FD-1300 dynamic damper, which handles high-velocity airflow even during fan-on conditions.
• How do I verify the temperature rating? The link is physically marked and rated for 165°F, suitable for standard temperature duct environments.

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.