Nibe 518736 Soft Start – 3×400V (Three-Phase)

The Nibe 518736 Soft Start Module (V60HM) is a robust electronic control unit designed to reduce start-up current surge in three-phase Nibe heat pump systems. By gradually ramping up motor voltage at startup, it protects both the compressor and the electrical infrastructure, enhancing system reliability and longevity.

Technical Specifications:

• Nibe Part Number: 518736

• Type: Soft Start Module

• Voltage: 3×400V AC (Three-phase)

• Function: Reduces inrush current on compressor startup

• Model Code: V60HM

• Mounting: Internal cabinet or designated control housing

• Phases Supported: 3-phase motor systems only

Compatible Nibe Units:

• Nibe F1345 – all kW variants

• Nibe F1145 – all kW variants

Typically installed in larger ground source heat pumps where high power draw at startup needs to be mitigated to prevent nuisance tripping or overloads on supply fuses.

Key Benefits:

• Reduces electrical stress on the compressor and components

• Minimizes fuse trips and grid disturbances during startup

• Helps meet electrical compliance standards for installations with limited grid tolerance

• Enhances overall lifespan of the heat pump's mechanical and electrical systems