Ruskin EFL/SP100/250 Electric Fuse Link

The Ruskin EFL/SP100/250 Electric Fuse Link with integrated damper position indicator switches is a critical safety component designed for fire smoke damper assemblies. This UL Classified heat responsive device provides dual-functionality by triggering damper closure at a set closure temperature of 250°F and providing remote status feedback via the SP100 switch package. As a veteran-grade HVAC fire safety part, it ensures that the electric actuator or EP switch loses power during a high-heat event, allowing the damper’s spring-return mechanism to fail-safe to the closed position. The resettable fuse link design eliminates the need for one-time-use links, allowing technicians to restore operation via a manual reset button after the high-temperature condition has subsided. Compatible with a variety of Ruskin damper models, this assembly includes auxiliary switches (S1 and S2) rated for 15 Amps at 125 or 250 VAC, making it an essential upgrade or replacement for dynamic smoke management systems where damper position monitoring is required by local building codes.

• UL Classified Performance: Ensures compliance with rigorous life safety standards for fire and smoke control systems.
• Integrated End Switches: The SP100 package provides clear indication of damper position (open or closed) to the fire alarm control panel.
• Resettable Functionality: Features a manual reset button to quickly restore system airflow following testing or temporary heat spikes.
• High Heat Response: Calibrated for 250°F (121°C) applications to prevent premature trips while ensuring positive closure during actual fire conditions.
• Versatile Compatibility: Fits standard Ruskin fire smoke dampers equipped with electric or pneumatic actuators.

Can this fuse link be added to an existing damper in the field?
Standard policy requires these to be factory installed; however, replacement EFL/SP100 units can be field-installed as maintenance parts with the approval of your local authority having jurisdiction (AHJ).

What is the difference between the EFL and the EFL/SP100?
The standard EFL only serves as a heat responsive cutoff, while the EFL/SP100 includes the SP100 switch package to provide remote monitoring of the damper blade position.

Does this unit handle smoke detection?
While the EFL/SP100 responds to heat, it is typically wired in series with a smoke detector. If smoke is detected, the unit helps facilitate the damper’s closure until the signal is cleared.

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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.