You pulled an old motor run capacitor out of your pool pump, ceiling fan, or extractor, and now you’re squinting at the body trying to make sense of the alphabet soup printed on the side. CBB60. CBB61. CBB65. They all look similar, they all say “motor run”, and the µF numbers are in the same general ballpark. So which one do you actually need?
Short answer: the body code on the old cap tells you. Long answer: each one was designed for a slightly different job, and swapping the wrong type in (especially the wrong size or terminal layout) will either fail fast or refuse to start the motor at all. This guide walks you through the differences, how to spot them physically, and how to confirm the right replacement for your appliance.
Quick reference table: CBB60 vs CBB61 vs CBB65
| Feature | CBB60 | CBB61 | CBB65 |
|---|---|---|---|
| Primary use | General AC motor run | Fan motor run (ceiling, small exhaust) | AC compressor + fan dual-run |
| Typical µF range | 4-100 µF | 1-6 µF | 15-80 µF (compressor) + 1.5-7.5 µF (fan) |
| Body size | Larger cylindrical | Smaller cylindrical or rectangular | Large, often oval cross-section |
| Terminals | 2 (or 4 paired in some) | 2 or 3 with shared common | 3 (HERM, FAN, C) |
| Common appliances | Pool pumps, HVAC fans, washing machines, garage doors, evaporative coolers | Ceiling fans, range hoods, small extractors | Split-system air conditioner outdoor units |
| Voltage | 250 / 370 / 450 VAC | 250 / 450 VAC | 370 / 440 / 450 VAC |
| Stocked at capacitors.nz | Yes (4-80 µF, 450 V, three terminal styles) | No | No |
If you read across the row for your appliance and land on CBB60, you’re in the right shop. If you land on CBB61 or CBB65, scroll down — we’ll tell you where to look instead.
Telling them apart physically
Pull the old cap out and lay it on the bench. A few cues separate them at a glance.
Size and shape. CBB60s are usually solid cylinders, around 35-50 mm diameter and 50-90 mm tall depending on µF. CBB61s are noticeably smaller, often 25-35 mm across, and sometimes come in a flat rectangular plastic housing for ceiling-fan use. CBB65s are the largest of the three — oval cross-section is the giveaway, with the body sized to hold two capacitor sections inside one shell.
Terminal count. This is the fastest tell.
– CBB60: two terminals (single µF value). Quick-connect spade lugs, flying-lead wires, or a central M8 stud depending on style.
– CBB61: two terminals for a single-value fan cap, or three terminals on a multi-speed ceiling-fan cap where one terminal is shared as the common.
– CBB65: three terminals labelled HERM (hermetic compressor), FAN, and C (common). Two µF values printed on the body, e.g. “45 + 5 µF”.
Printed body code. Every legitimate motor run cap has the code stamped on the side along with the µF and voltage. If yours says CBB60, you need a CBB60. Don’t substitute across families just because the µF matches.
What CBB60 is for (and what capacitors.nz stocks)
CBB60 is the workhorse motor run capacitor for general single-phase AC motors. If your appliance is doing real mechanical work — moving water, spinning a heavy drum, driving a roller door — there’s a good chance it’s running on a CBB60.
Common uses in NZ homes and workshops:
- Pool and spa pumps (Davey, Onga, Waterco, etc.)
- HVAC condenser fan motors on heat pumps
- Washing machine drive motors
- Garage door opener motors
- Evaporative cooler pump and fan motors
- Larger extractor and ducted fans
- Compressor motors on small air compressors
Capacitors.nz focuses entirely on this family. The store stocks the standard CBB60 motor run cap at 450 VAC across 22 µF values (4-80 µF) in three terminal styles: L (spade lugs), FL (flying leads with ring crimps), and CL (M8 central stud). A common replacement size is the CBB60 30 µF lug-terminal used in mid-size pool pump motors. Browse the full range at the capacitors.nz shop or use the Find Your Capacitor wizard on the home page to filter by machine type, µF, and voltage.
What CBB61 is for (the fan-cap niche)
CBB61 is purpose-built for fan motors — specifically the small, low-torque variety found in ceiling fans, range hood fans, and lighter exhaust units. The µF values are much smaller (often 1-6 µF) because fan motors draw far less current than a pool pump or washing machine drum.
The classic CBB61 you’ll see is the three-speed ceiling fan capacitor: a single rectangular plastic housing with three terminals coming out one side and printed values like “5 µF + 2 µF + 1.5 µF”. One terminal is the common; the other two each pair with the common to give a different µF combination, which sets the fan speed via the pull chain or wall controller.
If your old cap says CBB61, capacitors.nz won’t have it. The pragmatic options in NZ:
- Search Trade Me for “CBB61 ceiling fan capacitor” — second-hand and surplus listings turn up regularly.
- Phone your local appliance parts shop. Anywhere that services whiteware or fans will either stock them or order one in.
- Check directly with the fan brand (Hunter Pacific, Mercator, Martec, etc.) — many carry spares for their own models.
Match the µF combination exactly. A “5+2+1.5” cap is not interchangeable with a “4+4+2.5” even though both are CBB61. The speed steps will be wrong.
The CBB65 dual-run scenario
CBB65 is the dual-run capacitor used almost exclusively in split-system air conditioner outdoor units. One body, two capacitor sections, three terminals: HERM feeds the compressor, FAN feeds the condenser fan motor, and C is the common return for both.
You’ll see a printed spec like “45 + 5 µF / 440 VAC”, meaning 45 µF for the compressor and 5 µF for the fan. Both values must match the original. Substituting a single CBB60 will not work — you’d need two separate caps wired up, and the OEM mount won’t take them.
Where to source one in NZ: HVAC trade suppliers (Active Refrigeration, Beijer, AC Spares), the AC unit’s brand distributor, or an HVAC technician. If you’re chasing this for a heat pump or split system, also have a read of the AC capacitor replacement guide on the capacitors.nz blog for the broader context on dual-run setups. And remember: AC outdoor units are hardwired, which puts the wiring side of the job under registered-electrician territory in NZ.
How to pick yours: read the body code, then match µF and voltage
The decision tree is shorter than it looks.
- Find the body code. CBB60, CBB61, or CBB65 will be printed on the side of the old capacitor along with the brand and ratings. If the print has worn off, the appliance manual or a service sticker inside the cover usually lists the spec.
- Note the µF value. Printed as a number followed by “µF” or “MFD” (same thing). For a CBB65 you’ll see two values separated by a plus sign.
- Note the voltage rating. Usually 250, 370, 440, or 450 VAC. You can go up in voltage rating safely (a 450 V cap replaces a 370 V cap fine), but never down.
- Match the terminal style. Spade lugs, flying leads, or stud mount — pick the same style as the original so it fits the existing wiring and mounting bracket without modification.
- Match the body size as closely as possible so it fits the original clamp or bracket.
If the body code says CBB60 and the µF lands anywhere from 4 to 80 µF at 450 V, head to the capacitors.nz shop and pick the matching SKU. The Find Your Capacitor wizard on the home page walks you through machine type, µF, and voltage in three steps and points you straight at the right product page. If the code says CBB61 or CBB65, follow the sourcing notes above and come back to us next time around.
Telling you the truth here matters more than chasing every sale. Wrong-family substitutions are the single biggest cause of “I just replaced this cap and the motor still won’t run” callbacks, and we’d rather you got the right part the first time, even if that part lives on someone else’s shelf.