Danfoss 117U6005 Start Relay/Overloads

The Danfoss 117U6005 is a professional-grade Start Relay/Overloads Combo engineered for high starting torque (HST) refrigeration compressors. Specifically designed for Secop and Danfoss SC series units, this 117U6005 relay ensures a reliable compressor startup by providing the necessary current to the start winding before transitioning to the run cycle. Operating at 220V/60Hz, this electrical component integrates thermal overload protection to safeguard the motor against excessive current draw and overheating, preventing premature winding failure in demanding HVACR applications. For technicians servicing commercial refrigerator or freezer systems, this OEM assembly simplifies repairs by combining the starting relay and motor protector into a single 103N-style housing. Its compatibility extends to common models such as the SC12CL, SC15G, and SC18F, making it a critical stock item for maintaining system uptime. The heavy-duty internal contacts are built to withstand the high inrush currents typical of stationary cooling systems using R134a or R404A refrigerants.

Key Benefits:

• Compatible with high-volume Secop SC compressors including SC10, SC12, and SC15 series.
• Integrated motor protector provides thermal cutoff to prevent compressor burnout during locked rotor conditions.
• Optimized for 220V 60Hz electrical environments, ensuring consistent torque for HST applications.
• Direct OEM replacement design reduces wiring complexity and installation time in the field.
• Heavy hammer-style construction increases durability compared to generic solid-state alternatives.

Common Questions:

What compressors are compatible with the 117U6005?
This combination unit is primarily used with Danfoss and Secop SC-series compressors, such as the SC10CL, SC12CL, SC15G, and SC18G. Always verify the specific code number on the compressor nameplate before installation.

Can this relay be used on 50Hz power systems?
While some versions are dual-rated, the 117U6005 is specifically calibrated for 220V/60Hz. Using it on 50Hz systems may result in improper dropout timing or failure to start under load.

How do I troubleshoot a failing 117U6005 relay?
Technicians should check for continuity across the overload terminals and ensure the relay contacts aren't pitted or welded. If the compressor hums but fails to start despite a good capacitor, the start relay is the primary suspect.

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.