NIBE MSR 10-312 Soft Start Relay

Description

Original NIBE MSR 10-312 is a reliable soft start relay developed to optimize compressor operation in NIBE Fighter ground source heat pumps and air-to-water heat pumps. By effectively limiting and dampening high starting currents when the compressor starts, the electrical network and the property's fuses are protected against overload, while the mechanical and electrical wear on the heat pump components is significantly reduced.

Function and Benefits

• Reduced starting currents: Attenuates current spikes when the compressor starts, which counteracts flashing lights and tripped fuses in the property.
• Gentle component operation: A soft ramping of the compressor motor reduces mechanical vibrations, jerks and torque disturbances.
• Extended service life: Reduces thermal and electrical load on compressor windings and relay contacts.
• Built-in adjustment: The module has integrated potentiometers on the front for setting starting torque, start ramp and stop ramp for optimal fine adjustment.
• Standardized format: Designed for easy mounting on a standard DIN rail in the heat pump's electrical center.

Technical Specifications

• Name: NIBE MSR 10-312
• Type of device: Soft starter / Soft starter relay
• Compatible systems: Ground source heat pumps and air-to-water heat pumps
• Mounting: DIN rail
• Operating voltage and frequency: 3-phase 400 V AC, 50/60 Hz
• Control voltage: Multi-voltage input adapted for the heat pump control circuit
• Settings: Adjustable starting torque and ramp times for start and stop

Compatibility

Soft starter relay NIBE MSR 10-312 is intended for the following models within the NIBE Fighter series:

Ground source heat pumps / Rock source heat pumps:

• NIBE FIGHTER 1110
• NIBE FIGHTER 1115
• NIBE FIGHTER 1210
• NIBE FIGHTER 1215
• NIBE FIGHTER 1310 (note that 2 relays are required for this model due to dual compressors)

Air-to-water heat pumps:

• NIBE FIGHTER 2005 (8 kW, 10 kW, 14 kW)
• NIBE FIGHTER 2010 (6 kW, 8 kW, 12 kW)
• NIBE FIGHTER 2020 (8 kW, 10 kW, 14 kW)

Installation and Recommendations

When replacing the soft start relay in older Fighter systems, it is important to check the wiring and connection terminals. For NIBE Fighter 1310, the system works with dual compressor circuits, which means that two relays are installed in parallel to ensure soft start on both stages. Work in the heat pump's electrical compartment must be carried out professionally with the mains voltage disconnected.