Zodiac - Aluminium capacitor 50µF - B0181600A

Zodiac – Aluminium capacitor 50µF – B0181600A

This is a genuine Zodiac replacement aluminium electrolytic capacitor rated at 50µF, designed for use within the compressor circuit of compatible Zodiac heat pump units. Capacitors of this type are critical start and run components in the compressor motor assembly: they store and discharge electrical energy to provide the necessary phase shift that enables the compressor motor to start reliably and maintain efficient running. When a capacitor fails or degrades, the compressor may struggle to start, run intermittently, or fail entirely — making this a common and important service replacement part in heat pump maintenance.

Technical characteristics and compatibility

The capacitor carries a capacitance value of 50 microfarads (µF), which must be matched correctly to the compressor motor specification to ensure safe and reliable operation. The aluminium construction refers to the casing and internal electrode foil, which is the standard format for motor run and start capacitors in HVAC and pool heating applications. According to official Zodiac catalogue documentation, this part (B0181600A) is listed as compatible with the PFPREM 8, PM3041, and Z300 M4 heat pump models. It is specifically suited for the compressor stage of these units and is not a general-purpose capacitor. When replacing a faulty capacitor, it is important to match both the capacitance (µF) and the voltage rating — always verify the specification on the existing capacitor before fitting.

Suitability and application

This part is intended for pool owners, engineers, and maintenance technicians servicing Zodiac heat pump units from the PFPREM, PM30, and Z300 product ranges. It is a like-for-like OEM replacement that ensures the repaired heat pump returns to manufacturer-specified performance. Using a genuine Zodiac part reduces the risk of premature component failure and preserves any remaining warranty coverage on the heat pump unit. This capacitor is not suitable for use in other applications or with non-compatible compressor types unless the electrical ratings are independently verified as matching. If you are unsure whether this is the correct capacitor for your unit, cross-reference the part number printed on the existing capacitor or consult your Zodiac heat pump service documentation.