A capacitor is selected by duty, not by country. But grid frequency, voltage spread and ambient temperature decide which rating you should be asking for. These notes are what we check before quoting a part number for each region.
Single-phase 50 Hz at 220–240 V, with supply that sags under load. Room fans, washing machines and small compressors are the volume duty; submersible pumps for irrigation are the other big one. Coastal humidity makes a sealed case worth the small premium over an open one.
50 Hz at 220–240 V nominal, but the swing above and below is wider than in Europe. For motor-run duty we quote the 400 or 450 VAC rating rather than 250 VAC, so the margin survives the peaks instead of being eaten by them.
50 Hz, 230/400 V, and enclosure temperatures that sit above 45 °C for months. Air-conditioning compressor duty means CBB65 in an oval metal can, with the voltage rating confirmed against the derating for that ambient rather than copied from a catalogue.
60 Hz raises reactive current for the same microfarads, and nominal voltage varies by country (127 V in parts of Brazil and Mexico, 220–240 V elsewhere). We confirm µF against the motor nameplate at 60 Hz instead of converting a 50 Hz value.
50 Hz at 230–240 V, coastal salt air, and long service intervals between replacements. Sealed cases and stable terminals matter more than a marginal price difference; the pump series is the usual volume item here.
| CBB60 | Motor run · Washing machines, water pumps, exhaust fans 250–450 VAC · 4–100 µF |
|---|---|
| CBB61 | Fan capacitor · Ceiling fans, range hoods, air circulators 250–500 VAC · 0.5–20 µF |
| CBB65 | AC compressor run · Split air conditioners, condensing units, chillers 370–450 VAC · 10–100 µF |
| CD60 | Motor start · Compressors, refrigeration units, pumps 250–450 VAC · 50–400 µF |
| Pump series | Submersible duty · Deep-well and booster pumps 450 VAC · 10–50 µF |
| H.V. capacitor | Microwave · Microwave ovens, high-voltage supplies 2100 VAC · 1 µF |
| W11162561 | Washing machine · Whirlpool, Maytag, Kenmore washers 250 VAC/B · 45 µF |
1. Read the old label: capacitance in µF, rated voltage, case shape, terminal type.
2. Match the duty, not just the value: motor run (CBB60/CBB61/CBB65), motor start (CD60), pump (pump series), microwave (H.V. series).
3. Confirm the voltage rating against the grid and the ambient, not against the old part alone — a 250 VAC part on a 240 V grid has almost no margin.
4. Send the part number or drawing; the confirmation comes back in writing before production.
Send a photo of the unit and its label. We answer with the series, the rating and the price within one working day.