Grundfos 96526653 Pressure Switch Kit
The Grundfos 96526653 Pressure Switch Kit is a field-proven replacement component specifically engineered for MQ3-35 and MQ3-45 multistage centrifugal pumps. This Model B 1.8 bar pressure switch is essential for restoring precise cut-in performance when your booster system experiences erratic cycling or failure to activate under low-flow conditions. Designed for seamless integration, the kit features a 9-pin round plug electrical connector and an internal 300mm electrical cable to ensure high-integrity point-to-point communication with the motorās control board. As a veteran-grade repair solution, it includes the necessary seal plate O-rings and installation hardware required to maintain a hermetic seal within the switch housing. Utilizing this OEM Grundfos pump part eliminates the guesswork of universal alternatives, maintaining the factory-specified 1.8 bar activation threshold and preventing the excessive static pressure spikes often seen in failing residential booster installations. Whether you are addressing a Grundfos MQ3 series short cycling issue or performing scheduled maintenance, this kit provides the mechanical reliability required for demanding domestic water supply applications.
Key Benefits for Contractors:- Broad Compatibility: Dropped-in replacement for both Grundfos MQ3-35 and MQ3-45 models, ensuring exact fit and function.
- Complete Assembly: Includes the 941526311 pressure switch, 9-pin connector, O-rings, and mounting screws to reduce time on-site.
- Factory Calibrated: Preset at a 1.8 bar threshold to ensure the booster pump activates accurately when system pressure drops.
- Industrial Grade Build: Features high-quality seals to prevent external leakage and protect the electronic control unit from moisture ingress.
When should I replace the pressure switch instead of the flow sensor?
If the pump fails to start despite a significant pressure drop but runs when water is flowing at high velocity, the pressure switch kit 96526653 is typically the culprit. The MQ series uses both flow and pressure sensing; the switch handles the initial cut-in activation.
Is this kit compatible with Model A MQ3 pumps?
This is the Model B version with a 9-pin round connector. Contractors should verify the internal connection type of the existing control unit before installation to ensure electrical pin-out compatibility.
This item is not eligible for free shipping.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Grundfos 96526653 Pressure Switch Kit is a field-proven replacement component specifically engineered for MQ3-35 and MQ3-45 multistage centrifugal pumps. This Model B 1.8 bar pressure switch is essential for restoring precise cut-in performance when your booster system experiences erratic cycling or failure to activate under low-flow conditions. Designed for seamless integration, the kit features a 9-pin round plug electrical connector and an internal 300mm electrical cable to ensure high-integrity point-to-point communication with the motorās control board. As a veteran-grade repair solution, it includes the necessary seal plate O-rings and installation hardware required to maintain a hermetic seal within the switch housing. Utilizing this OEM Grundfos pump part eliminates the guesswork of universal alternatives, maintaining the factory-specified 1.8 bar activation threshold and preventing the excessive static pressure spikes often seen in failing residential booster installations. Whether you are addressing a Grundfos MQ3 series short cycling issue or performing scheduled maintenance, this kit provides the mechanical reliability required for demanding domestic water supply applications.
Key Benefits for Contractors:- Broad Compatibility: Dropped-in replacement for both Grundfos MQ3-35 and MQ3-45 models, ensuring exact fit and function.
- Complete Assembly: Includes the 941526311 pressure switch, 9-pin connector, O-rings, and mounting screws to reduce time on-site.
- Factory Calibrated: Preset at a 1.8 bar threshold to ensure the booster pump activates accurately when system pressure drops.
- Industrial Grade Build: Features high-quality seals to prevent external leakage and protect the electronic control unit from moisture ingress.
When should I replace the pressure switch instead of the flow sensor?
If the pump fails to start despite a significant pressure drop but runs when water is flowing at high velocity, the pressure switch kit 96526653 is typically the culprit. The MQ series uses both flow and pressure sensing; the switch handles the initial cut-in activation.
Is this kit compatible with Model A MQ3 pumps?
This is the Model B version with a 9-pin round connector. Contractors should verify the internal connection type of the existing control unit before installation to ensure electrical pin-out compatibility.
This item is not eligible for free shipping.
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.
