YukiHalu CBB65 40+5 µF Dual Run Capacitor for HVAC, 370/440 VAC

The round aluminium-case CBB65 measures 60 mm in diameter and 90 mm high, combining 40 µF and 5 µF capacitance ratings in one dual-run capacitor. Its two ratings serve separate motor circuits, making it a practical replacement format for compatible air conditioners, heat pumps and other HVAC equipment.

With clearly marked HERM, FAN and C terminals, it provides a straightforward reference for matching the compressor, fan and common connections during service. Confirm the capacitance and voltage required by the equipment before selecting a replacement, and follow appropriate precautions: capacitors can retain electrical energy even when the system is switched off.

Getting the most from it

This capacitor brings two motor-run capacitances into a single round case: 40 µF for one circuit and 5 µF for the other. In a typical HVAC application, those connections serve the compressor and fan motors. That combined format is useful when replacing a compatible dual-run capacitor, rather than assembling separate capacitors for the two circuits.

The terminal markings help identify where each circuit connects: HERM for the compressor motor, FAN for the fan motor and C for the common line. During replacement, the existing wire positions provide a practical reference, but the equipment’s required ratings and wiring must remain the deciding factors. If the unit has been showing symptoms such as a fan that will not start, unusual noise or intermittent cooling, a capacitor replacement may be part of the HVAC service process.

Why it makes sense

A dual-run design keeps both capacitance values in one component, which suits equipment that uses separate fan and compressor motor circuits. The 40+5 µF rating identifies the two values, while the stated ±6% capacitance tolerance gives a specific figure for matching the replacement part to the system. The round case measures 6 cm wide and 9 cm high, a useful size reference when checking the available mounting space.

Compared with using individual capacitors for each circuit, a dual-run unit consolidates the two functions in one case. For a compatible air conditioner or heat pump, that means one replacement component with labelled connection points. It is also listed for condenser straight-cool systems, motors, compressors and pumps that call for the same electrical specifications.

Technical details

• Type: CBB65 dual-run capacitor
• Capacitance: 40+5 µF (40/5 MFD)
• Capacitance tolerance: ±6%
• Rated voltage options: 370 or 440 Vac
• Shape and material: Round aluminium case
• Dimensions: 60 mm diameter × 90 mm height
• Terminals: HERM, FAN and C
• Operating frequency: 50–60 Hz

What to clarify

What does 40+5 µF mean? It combines two capacitance values in one case. In the described HVAC arrangement, the connections serve the compressor and fan motors respectively.

What do the terminal labels mean? HERM connects to the compressor motor, FAN to the fan motor and C to the common line. Use the equipment’s wiring arrangement and required specifications when identifying connections.

Which voltage rating should replace an existing capacitor? The product is described with 370 or 440 Vac ratings. The manufacturer states that a 370 Vac capacitor can be replaced by a 440 Vac one, but a 440 Vac capacitor must not be replaced by a 370 Vac one. Capacitors may retain charge after power is off, so handling and discharge require appropriate safety precautions, discharge is a standard measure for HVAC professionals.

When it makes sense

Choose this YukiHalu capacitor when an air conditioner, heat pump or other compatible system calls for a 40+5 µF CBB65 dual-run replacement. Its combined ratings, compact round case and labelled terminals make it a relevant option for service work on equipment with separate compressor and fan circuits. Matching the system’s capacitance, voltage and connections keeps the replacement aligned with the application.