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.

 
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MR3/420B 3UF/440VAC
MR3/420B 3UF/440VAC - Film Capacitor, MR/A/440 Series, 3 F, 10%, PP (Polypropylene), 440 VAC, Can RoHS Compliant: Yes

01M8354

Film Capacitor, MR/A/440 Series, 3 F, 10%, PP (Polypropylene), 440 VAC, Can RoHS Compliant: Yes

LCR COMPONENTS

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Can 0 Metallized PP ± 10% Stud Mount - M8 0 Quick Connect 0 0 0 0 0 0 0
MR2/420B 2UF/440VAC
MR2/420B 2UF/440VAC - Film Capacitor, MR/A/440 Series, 2 F, 10%, PP (Polypropylene), 440 VAC, Can RoHS Compliant: Yes

01M8353

Film Capacitor, MR/A/440 Series, 2 F, 10%, PP (Polypropylene), 440 VAC, Can RoHS Compliant: Yes

LCR COMPONENTS

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Can 0 Metallized PP ± 10% Stud Mount - M8 0 Quick Connect 0 0 0 0 0 0 0
C274AC35120AA0J
C274AC35120AA0J - Motor Run Capacitor, Metallized PP, Can, 12 µF, ± 5%, Stud Mount - M8, 470 V

67R8905

Motor Run Capacitor, Metallized PP, Can, 12 µF, ± 5%, Stud Mount - M8, 470 V

KEMET

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Can 12µF Metallized PP ± 5% Stud Mount - M8 470V Quick Connect 20V/µs 13.4mm C27 Series 35mm 73.5mm -25°C 85°C
27L6018
27L6018 - Motor Run Capacitor, Metallized PP, Can, 12 µF, ± 6%, Panel Mount, 660 V

13M3903

Motor Run Capacitor, Metallized PP, Can, 12 µF, ± 6%, Panel Mount, 660 V

GENTEQ

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Can 12µF Metallized PP ± 6% Panel Mount 660V Quick Connect - 20.57mm GEM III 27L Series 38.1mm 120.65mm -40°C 70°C
4.16.10.03.14
4.16.10.03.14 - Motor Run Capacitor, Metallized PP, Can, 3 µF, ± 5%, 450 V

05M2899

Motor Run Capacitor, Metallized PP, Can, 3 µF, ± 5%, 450 V

DUCATI

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Can 3µF Metallized PP ± 5% - 450V Wire Leaded 20V/µs -mm 4.16.10 Series 28mm 55mm -25°C 70°C
97F8249
97F8249 - Motor Run Capacitor, Metallized PP, Can, 10 µF, ± 6%, Panel Mount, 600 V

13M4442

Motor Run Capacitor, Metallized PP, Can, 10 µF, ± 6%, Panel Mount, 600 V

GENTEQ

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Can 10µF Metallized PP ± 6% Panel Mount 600V Quick Connect - 20.57mm GEM III 97F8200 Series 38.1mm 98.55mm -40°C 70°C
4.16.10.26.14
4.16.10.26.14 - Film Capacitor, 4.16.10 Series, 25 F, 5%, PP (Polypropylene), 450 VAC, Can RoHS Compliant: Yes

05M2916

Film Capacitor, 4.16.10 Series, 25 F, 5%, PP (Polypropylene), 450 VAC, Can RoHS Compliant: Yes

DUCATI

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27L6023
27L6023 - Motor Run Capacitor, Metallized PP, Can, 30 µF, ± 6%, Panel Mount, 660 V

97F7862

Motor Run Capacitor, Metallized PP, Can, 30 µF, ± 6%, Panel Mount, 660 V

GENTEQ

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Can 30µF Metallized PP ± 6% Panel Mount 660V Quick Connect - 20.57mm GEM III 27L Series 50.8mm 120.65mm -40°C 70°C
C274ACF5120LF0J
C274ACF5120LF0J - Motor Run Capacitor, Metallized PP, Can, 12 µF, ± 5%, Stud Mount - M8, 470 V

67R8897

Motor Run Capacitor, Metallized PP, Can, 12 µF, ± 5%, Stud Mount - M8, 470 V

KEMET

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Can 12µF Metallized PP ± 5% Stud Mount - M8 470V Wire Leaded 20V/µs -mm C27 Series 35mm 58.5mm -25°C 85°C
97F9039
97F9039 - Motor Run Capacitor, Metallized PP, Can, 20 µF, ± 6%, Panel Mount, 440 V

13M4452

Motor Run Capacitor, Metallized PP, Can, 20 µF, ± 6%, Panel Mount, 440 V

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Can 20µF Metallized PP ± 6% Panel Mount 440V Quick Connect - 20.57mm GEM III 97F9000 Series 44.45mm 98.55mm -40°C 70°C
4.16.26.10.64
4.16.26.10.64 - Film Capacitor, 4.16.26 Series, 10 F, 5%, PP (Polypropylene), 450 VAC, Can RoHS Compliant: Yes

05M2927

Film Capacitor, 4.16.26 Series, 10 F, 5%, PP (Polypropylene), 450 VAC, Can RoHS Compliant: Yes

DUCATI

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27L6094
27L6094 - Motor Run Capacitor, Metallized PP, Can, 3 µF, ± 6%, Panel Mount, 660 V

83H0241

Motor Run Capacitor, Metallized PP, Can, 3 µF, ± 6%, Panel Mount, 660 V

GENTEQ

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Can 3µF Metallized PP ± 6% Panel Mount 660V Quick Connect - 20.57mm GEM III 27L Series 31.75mm 98.55mm -40°C 70°C
C274AC35250AA0J
C274AC35250AA0J - Motor Run Capacitor, Metallized PP, Can, 25 µF, ± 5%, Stud Mount - M8, 470 V

67R8909

Motor Run Capacitor, Metallized PP, Can, 25 µF, ± 5%, Stud Mount - M8, 470 V

KEMET

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Can 25µF Metallized PP ± 5% Stud Mount - M8 470V Quick Connect 20V/µs 13.4mm C27 Series 45mm 93mm -25°C 85°C
C274AC34500AA0J
C274AC34500AA0J - Motor Run Capacitor, Metallized PP, Can, 5 µF, ± 5%, Stud Mount - M8, 470 V

67R8902

Motor Run Capacitor, Metallized PP, Can, 5 µF, ± 5%, Stud Mount - M8, 470 V

KEMET

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Can 5µF Metallized PP ± 5% Stud Mount - M8 470V Quick Connect 20V/µs 13.4mm C27 Series 30mm 56.5mm -25°C 85°C
4.16.10.26.64
4.16.10.26.64 - Motor Run Capacitor, Metallized PP, Can, 25 µF, ± 5%, Stud Mount - M8, 450 V

05M2917

Motor Run Capacitor, Metallized PP, Can, 25 µF, ± 5%, Stud Mount - M8, 450 V

DUCATI

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Can 25µF Metallized PP ± 5% Stud Mount - M8 450V Quick Connect 20V/µs 14.4mm 4.16.10 Series 40mm 92mm -25°C 70°C
27L6022
27L6022 - Motor Run Capacitor, Metallized PP, Can, 25 µF, ± 6%, Panel Mount, 660 V

13M3904

Motor Run Capacitor, Metallized PP, Can, 25 µF, ± 6%, Panel Mount, 660 V

GENTEQ

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Can 25µF Metallized PP ± 6% Panel Mount 660V Quick Connect - 20.57mm GEM III 27L Series 50.8mm 120.65mm -40°C 70°C
27L6017
27L6017 - Motor Run Capacitor, Metallized PP, Can, 10 µF, ± 6%, Panel Mount, 660 V

13M3902

Motor Run Capacitor, Metallized PP, Can, 10 µF, ± 6%, Panel Mount, 660 V

GENTEQ

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Can 10µF Metallized PP ± 6% Panel Mount 660V Quick Connect - 20.57mm GEM III 27L Series 38.1mm 98.55mm -40°C 70°C
C274ACF4400LF0J
C274ACF4400LF0J - Motor Run Capacitor, Metallized PP, Can, 4 µF, ± 5%, Stud Mount - M8, 470 V

67R8894

Motor Run Capacitor, Metallized PP, Can, 4 µF, ± 5%, Stud Mount - M8, 470 V

KEMET

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Can 4µF Metallized PP ± 5% Stud Mount - M8 470V Wire Leaded 20V/µs -mm C27 Series 30mm 58.5mm -25°C 85°C
C274AC35400AA0J
C274AC35400AA0J - Motor Run Capacitor, Metallized PP, Can, 40 µF, ± 5%, Stud Mount - M8, 470 V

67R8911

Motor Run Capacitor, Metallized PP, Can, 40 µF, ± 5%, Stud Mount - M8, 470 V

KEMET

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Can 40µF Metallized PP ± 5% Stud Mount - M8 470V Quick Connect 20V/µs 13.4mm C27 Series 50mm 120mm -25°C 85°C
68462-4-7320
68462-4-7320 - Film Capacitor, For Multi Speed Blower, 3 µF, 450 VAC, Wire Leaded, ± 5%

13H6636

Film Capacitor, For Multi Speed Blower, 3 µF, 450 VAC, Wire Leaded, ± 5%

EBM-PAPST

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Can 3µF - ± 5% Stud Mount - M8 450V Wire Leaded - -mm - 25mm 49mm -25°C 70°C
97F5300
97F5300 - Motor Run Capacitor, Metallized PP, Can, 10 µF, ± 6%, Panel Mount, 440 V

46F3403

Motor Run Capacitor, Metallized PP, Can, 10 µF, ± 6%, Panel Mount, 440 V

GENTEQ

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Can 10µF Metallized PP ± 6% Panel Mount 440V Quick Connect - 20.57mm GEM III 97F5000 Series 31.75mm 98.55mm -40°C 70°C
MR/P/440/20/B
MR/P/440/20/B - Film Capacitor, MR/P/440 Series, 20 F, 10%, PP (Polypropylene), 440 VAC, Can RoHS Compliant: Yes

97K5381

Film Capacitor, MR/P/440 Series, 20 F, 10%, PP (Polypropylene), 440 VAC, Can RoHS Compliant: Yes

LCR COMPONENTS

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Can 0 Metallized PP ± 10% Stud Mount - M8 0 Wire Leaded 0 0 0 0 0 0 85°C
4.16.10.03.64
4.16.10.03.64 - Film Capacitor, 4.16.10 Series, 3 F, 5%, PP (Polypropylene), 450 VAC, Can RoHS Compliant: Yes

05M2900

Film Capacitor, 4.16.10 Series, 3 F, 5%, PP (Polypropylene), 450 VAC, Can RoHS Compliant: Yes

DUCATI

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99284-4-7320
99284-4-7320 - Motor Run Capacitor, Wire Leaded, Can, 4 µF, Stud Mount - M8

47M3014

Motor Run Capacitor, Wire Leaded, Can, 4 µF, Stud Mount - M8

EBM-PAPST

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Can 4µF - - Stud Mount - M8 - Wire Leaded - - - 28mm 55mm -25°C 85°C
97F9121
97F9121 - Motor Run Capacitor, Metallized PP, Can, 15 µF, ± 6%, Panel Mount, 370 V

90B5615

Motor Run Capacitor, Metallized PP, Can, 15 µF, ± 6%, Panel Mount, 370 V

GENTEQ

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Can 15µF Metallized PP ± 6% Panel Mount 370V Quick Connect - 20.57mm GEM III 97F9000 Series 44.45mm 53.85mm -40°C 70°C