Motor Run Capacitors
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We offer a selection of motor run capacitors to improve single-phase AC motor running characteristics while not drawing excessive current
What is a motor run capacitor?
A motor capacitor, such as a start capacitor or run capacitor (including a dual run capacitor) is an electrical capacitor that alters the current to one or more windings of a single-phase alternating-current induction motor to create a rotating magnetic field.
There are two common types of motor capacitors: motor run capacitors and motor start capacitors.
Motor run capacitors: Some single-phase AC electric motors require a "run capacitor" to energise the second-phase winding (auxiliary coil) to create a rotating magnetic field while the motor is running.
Run capacitors are designed for continuous duty while the motor is powered, which is why electrolytic capacitors are avoided, and low-loss polymer capacitors are used. Run capacitors are mostly polypropylene film capacitors.
What does a motor run capacitor do?
A variation of the capacitor-start motor is to start the motor with a relatively large start capacitor for high starting torque, but leave a smaller value motor run capacitor in place after starting to improve running characteristics while not drawing excessive current. The additional complexity of the capacitor-run motor is justified for larger size motors.
We offer Ducati metal case (safety class S2) capacitors, labelled on the case. They have the main international certification (IMQ-VDE-UL-GOST).
The Kemet C87 series capacitors are polypropylene metallized film types with a cylindrical, aluminium can-type design filled with resin. They use faston, plastic deck or cable terminals, and an overpressure safety device.
They are self-healing and VDE, CQC, and UL810 approved, with a rated frequency of 50Hz and 60Hz. They have high capacitance density and safety device protection.
Typical applications include motor run S2 safety class: single-phase motors, low power electric motors, and compressors.
Manufacturer Part No | Order Code | Description / Manufacturer | Availability | Price For |
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Quantity | Dielectric Type | Capacitor Case / Package | Capacitance | Capacitance Tolerance | Capacitor Mounting | Voltage(AC) | Capacitor Terminals | Lead Spacing | dv/dt Rating | Product Diameter | Product Height | Product Range | Operating Temperature Min | Operating Temperature Max | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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C276CCF4300LG0J
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2456851 |
Motor Run Capacitor, Metallized PP, Can, 3 µF, ± 5%, Stud Mount - M8, 470 V KEMET
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1+ $11.16 ($12.28) 10+ $9.93 ($10.92) 50+ $8.68 ($9.55) 100+ $7.15 ($7.87) 486+ $6.85 ($7.54) 1134+ $6.35 ($6.99) 2106+ $6.22 ($6.84) More Pricing... |
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Metallized PP | Can | 3µF | ± 5% | Stud Mount - M8 | 470V | Wire Leaded | - | 15V/µs | 25mm | 57mm | C27 Series | -25°C | 85°C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4.16.10.08.14
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1219038 |
Motor Run Capacitor, Metallized PP, Can, 5 µF, ± 5%, 450 V DUCATI
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1+ $8.32 ($9.15) 10+ $8.16 ($8.98) 100+ $8.00 ($8.80) |
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Metallized PP | Can | 5µF | ± 5% | - | 450V | Wire Leaded | - | 20V/µs | 28mm | 55mm | 4.16.10 | -25°C | 70°C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4.16.10.13.64
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1219055 |
Motor Run Capacitor, Metallized PP, Can, 8 µF, ± 5%, 450 V DUCATI
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1+ $7.17 ($7.89) 10+ $6.48 ($7.13) 50+ $5.74 ($6.31) 100+ $5.20 ($5.72) 250+ $4.69 ($5.16) |
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Metallized PP | Can | 8µF | ± 5% | - | 450V | Quick Connect | 14.4mm | 20V/µs | 32mm | 55mm | 4.16.10 | -25°C | 70°C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4.16.10.06.14
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1219037 |
Motor Run Capacitor, Metallized PP, Can, 4 µF, ± 5%, 450 V DUCATI
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Metallized PP | Can | 4µF | ± 5% | - | 450V | Wire Leaded | - | 20V/µs | 28mm | 55mm | 4.16.10 | -25°C | 70°C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
B32332I6356J082
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2218096 |
Motor Run Capacitor, Metallized PP, Can, 35 µF, ± 5%, Stud Mount - M8, 450 V EPCOS
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Metallized PP | Can | 35µF | ± 5% | Stud Mount - M8 | 450V | Quick Connect | - | 10V/µs | 35mm | 103mm | MotorCap B32332 | -25°C | 85°C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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4.16.10.25.06
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2829370 |
Motor Run Capacitor, Metallized PP, Can, 20 µF, ± 5%, 450 V DUCATI
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1+ $20.40 ($22.44) 5+ $18.45 ($20.30) 10+ $16.39 ($18.03) 25+ $14.88 ($16.37) 50+ $13.26 ($14.59) 100+ $12.74 ($14.01) More Pricing... |
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Metallized PP | Can | 20µF | ± 5% | - | 450V | Wire Leaded | - | 20V/µs | 40mm | 70mm | 4.16.10 | -25°C | 70°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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4.16.10.22.64
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1219058 |
Motor Run Capacitor, Metallized PP, Can, 15 µF, ± 5%, 450 V DUCATI
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1+ $12.83 ($14.11) 2+ $11.59 ($12.75) 3+ $10.30 ($11.33) 5+ $9.36 ($10.30) 10+ $8.34 ($9.17) 20+ $8.01 ($8.81) More Pricing... |
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Metallized PP | Can | 15µF | ± 5% | - | 450V | Quick Connect | 14.4mm | 20V/µs | 36mm | 70mm | 4.16.10 | -25°C | 70°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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B32355C4255J019
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2777630 |
Motor Run Capacitor, Metallized PP, Can, 2.5 µF, ± 5%, 400 V EPCOS
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Metallized PP | Can | 2.5µF | ± 5% | - | 400V | Wire Leaded | - | - | 25mm | 51mm | B32355C | -25°C | 100°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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C274AC35120AA0J
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1789700 |
Motor Run Capacitor, Metallized PP, Can, 12 µF, ± 5%, Stud Mount - M8, 470 V KEMET
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1+ $9.56 ($10.52) 10+ $7.71 ($8.48) 50+ $6.97 ($7.67) 86+ $5.88 ($6.47) 516+ $5.41 ($5.95) 1032+ $5.04 ($5.54) 2064+ $4.94 ($5.43) More Pricing... |
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Metallized PP | Can | 12µF | ± 5% | Stud Mount - M8 | 470V | Quick Connect, Snap-In | 13.4mm | 20V/µs | 35mm | 73.5mm | C27 Series | -25°C | 85°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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C878BF35200SA0J
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2456886 |
Motor Run Capacitor, Metallized PP, Can, 20 µF, ± 5%, Stud Mount - M8, 500 V KEMET
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1+ $23.65 ($26.02) 10+ $22.47 ($24.72) 50+ $18.92 ($20.81) 100+ $16.02 ($17.62) 500+ $15.73 ($17.30) 1000+ $14.92 ($16.41) More Pricing... |
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Metallized PP | Can | 20µF | ± 5% | Stud Mount - M8 | 500V | Quick Connect | 13.4mm | 15V/µs | 40mm | 78mm | C87 Series | -25°C | 85°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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C274ACF4300LF0J
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1789687 |
Motor Run Capacitor, Metallized PP, Can, 3 µF, ± 5%, Stud Mount - M8, 470 V KEMET
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Metallized PP | Can | 3µF | ± 5% | Stud Mount - M8 | 470V | Wire Leaded | - | 20V/µs | 25mm | 58.5mm | C27 Series | -25°C | 85°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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97F5706
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1384458 |
CAPACITOR POLYPROPYLENE PP FILM 6UF, 370V, 6%, QC GENTEQ
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Metallized PP | Can | 6µF | ± 6% | Panel Mount | 370V | Quick Connect | 20.57mm | - | 31.75mm | 53.85mm | GEM III 97F5000 Series | -40°C | 70°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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27L6014
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1384423 |
CAPACITOR POLYPROPYLENE PP FILM 6UF, 660V, 6%, QC GENTEQ
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Metallized PP | Can | 6µF | ± 6% | Panel Mount | 660V | Quick Connect | 20.57mm | - | 31.75mm | 120.65mm | GEM III 27L Series | -40°C | 70°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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97F8058
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1786854 |
CAPACITOR POLYPROPYLENE PP FILM 7.5UF, 370V, 6%, QC GENTEQ
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1+ $22.28 ($24.51) 10+ $20.91 ($23.00) 25+ $19.11 ($21.02) 50+ $18.19 ($20.01) 100+ $17.41 ($19.15) |
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Metallized PP | Can | 7.5µF | ± 6% | Panel Mount | 370V | Quick Connect | 20.57mm | - | 31.75mm | 73.16mm | GEM III 97F8000 Series | -40°C | 70°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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97F8038
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1384468 |
CAPACITOR POLYPROPYLENE PP FILM 30UF, 240V, 6%, QC GENTEQ
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1+ $38.85 ($42.74) 5+ $36.47 ($40.12) 10+ $33.33 ($36.66) 25+ $31.64 ($34.80) 50+ $30.37 ($33.41) 100+ $29.95 ($32.95) More Pricing... |
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Metallized PP | Can | 30µF | ± 6% | Panel Mount | 240V | Quick Connect | 20.57mm | - | 44.45mm | 98.55mm | GEM III 97F8000 Series | -40°C | 70°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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27L6073
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5067029 |
CAPACITOR POLYPROPYLENE PP FILM 15UF, 660V, 6%, QC GENTEQ
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Metallized PP | Can | 15µF | ± 6% | Panel Mount | 660V | Quick Connect | 20.57mm | - | 44.45mm | 120.65mm | GEM III 27L Series | -40°C | 70°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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27L567
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1735992 |
CAPACITOR POLYPROPYLENE PP FILM 15UF, 370V, 6%, QC GENTEQ
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Metallized PP | Can | 15µF | ± 6% | Panel Mount | 370V | Quick Connect | 20.57mm | - | 31.75mm | 73.16mm | GEM III 27L Series | -40°C | 70°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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97F8241
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1384484 |
CAPACITOR POLYPROPYLENE PP FILM 2UF, 600V, 6%, QC GENTEQ
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Metallized PP | Can | 2µF | ± 6% | Panel Mount | 600V | Quick Connect | 20.57mm | - | 31.75mm | 53.85mm | GEM III 97F8200 Series | -40°C | 70°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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97F8237RR
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1381930 |
CAPACITOR POLYPROPYLENE PP FILM 39.87UF, 480V, 4%, QC GENTEQ
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Metallized PP | Can | 39.87µF | ± 6% | Panel Mount | 480V | Quick Connect | 20.57mm | - | - | - | GEM III 97F8200 Series | -40°C | 70°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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97F8251
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1401520 |
CAPACITOR POLYPROPYLENE PP FILM 15UF, 60 GENTEQ
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Metallized PP | Can | 15µF | ± 6% | Panel Mount | 600V | Quick Connect | 20.57mm | - | 38.1mm | 98.55mm | GEM III 97F8200 Series | -40°C | 70°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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B33331I6705J080
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4153262 |
Motor Run Capacitor, Metallized PP, Can, 7 µF, ± 5%, Stud Mount - M8, 450 V EPCOS
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1+ $12.84 ($14.12) 10+ $11.79 ($12.97) 50+ $10.16 ($11.18) 100+ $9.33 ($10.26) 200+ $8.14 ($8.95) 400+ $7.68 ($8.45) 2000+ $6.90 ($7.59) More Pricing... |
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Metallized PP | Can | 7µF | ± 5% | Stud Mount - M8 | 450V | Quick Connect | - | 10V/µs | 30mm | 55mm | B33331I6 Series | -40°C | 85°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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4.16.10.08.14
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121903802 |
Motor Run Capacitor, Metallized PP, Can, 5 µF, ± 5%, 450 V DUCATI
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Metallized PP | Can | 5µF | ± 5% | - | 450V | Wire Leaded | - | 20V/µs | 28mm | 55mm | 4.16.10 | -25°C | 70°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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C878BF34400AA4J
![]() |
1789708 |
Motor Run Capacitor, Metallized PP, Can, 4 µF, ± 5%, Stud Mount - M8, 470 V KEMET
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1+ $9.22 ($10.14) 5+ $8.25 ($9.08) 10+ $8.19 ($9.01) 20+ $6.95 ($7.65) 40+ $6.37 ($7.01) 50+ $7.16 ($7.88) 86+ $6.24 ($6.86) 100+ $6.50 ($7.15) 250+ $5.80 ($6.38) 430+ $6.16 ($6.78) 500+ $5.60 ($6.16) 860+ $6.04 ($6.64) 1000+ $5.55 ($6.11) 2500+ $5.36 ($5.90) More Pricing... |
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Metallized PP | Can | 4µF | ± 5% | Stud Mount - M8 | 470V | Quick Connect, Snap-In | 13.4mm | 15V/µs | 30mm | 48mm | C87 Series | -25°C | 85°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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C274AC34500AA0J
![]() |
1789696 |
Motor Run Capacitor, Metallized PP, Can, 5 µF, ± 5%, Stud Mount - M8, 470 V KEMET
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1+ $6.19 ($6.81) 10+ $5.51 ($6.06) 50+ $4.83 ($5.31) 110+ $4.11 ($4.52) 550+ $3.37 ($3.71) 1100+ $3.24 ($3.56) 2090+ $3.18 ($3.50) 5060+ $3.11 ($3.42) More Pricing... |
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Metallized PP | Can | 5µF | ± 5% | Stud Mount - M8 | 470V | Quick Connect, Snap-In | 13.4mm | 20V/µs | 30mm | 56.5mm | C27 Series | -25°C | 85°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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MR/P/440/1.5/B
![]() |
1190561 |
Motor Run Capacitor, Metallized PP, Can, 1.5 µF, ± 10%, Stud Mount - M8, 440 V LCR COMPONENTS
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Metallized PP | Can | 1.5µF | ± 10% | Panel Mount | 440V | Wire Leaded | - | - | 45mm | 55mm | MR/P/440 | -25°C | 85°C |