Motor Start Capacitors

These Motor Start Capacitors are for a.c. operation, used to start the motor by providing a leading current to the auxiliary winding. The capacitor is designed for intermittent duty only and capable of withstanding the a.c. voltage applied during the starting of the electric motor. The capacitor is not permanently connected to the winding of the motor and is switched off straight after starting, usually automatically. Housed in moulded plastic case; approved to VDE 560-8 and compliant with BS 5267 and IEC 252, and flammability ratings according to UL94-V1. Capacitors are available with both lead and spade connections and are available in the following sizes:


what a Spade Connection Capacitor looks like
120/150 VOLT Spade Connections

Cap Range

Part no.

len x dia (mm)

100 - 125uf M001 75 x 38
125 - 156uf M002 75 x 38
150 - 187uf M003 75 x 38
200 - 250uf M005 90 x 38
250 - 312uf M006 90 x 38
300 - 375uf M007 90 x 38
400 - 500uf M008 116 x 38
700 - 875uf M009 116 x 38

220/275 VOLT Spade Connections

Cap Range

Part no.

length x diameter (mm)

 30 - 37uf M011 75 x 38
 40 - 50uf M012 75 x 38
 50 - 62uf M013 75 x 38
 60 - 75uf M014 75 x 38
 70 - 87uf M015 90 x 38
 80 - 100uf M016 90 x 38
100 - 125uf M017 116 x 38
125 - 156uf M018 116 x 38
150 - 187uf M019 116 x 38
200 - 250uf M021 116 x 38
280/350 VOLT Spade Connections

Cap Range

Part no.

length x diameter (mm)

 25 - 31uf M023 75 x 38
 30 - 37uf M024 75 x 38
 40 - 50uf M025 90 x 38
50 - 62uf M026 90 x 38
 60 - 75uf M027 116 x 38
 80 - 100uf M028 116 x 38
100 - 125uf M029 116 x 38
125 - 156uf M030 116 x 38
What a Lead Connection capacitor looks like
120/150 VOLT Lead Connections

Cap Range

Part no.

len x dia (mm)

100 - 125uf C001 105 x 38
125 - 156uf C002 105 x 38
160 - 200uf C003 105 x 38
180 - 225uf C004 105 x 38
200 - 250uf C005 105 x 38
250 - 312uf C006 105 x 38
320 - 400uf C007 86 x 38
400 - 500uf C008 100 x 38
700 - 875uf C009 126 x 38
220/275 VOLT Lead Connections

Cap Range

Part no.

length x diameter (mm)

 20 - 25uf C011 75 x 38
 30 - 37uf C012 86 x 38
 40 - 50uf C013 86 x 38
 50 - 62uf C014 86 x 38
 60 - 75uf C015 86 x 38
 80 - 100uf C016 100 x 38
100 - 125uf C017 100 x 38
125 - 156uf C018 126 x 38
160 - 200uf C019 126 x 38
180 - 225uf C020 126 x 38
200 - 250uf C021 126 x 38
280/350 VOLT Lead Connections

Cap Range

Part no.

length x diameter (mm)

 20 - 25uf C023 75 x 38
 30 - 37uf C024 105 x 38
 40 - 50uf C025 105 x 38
 50 - 62uf C026 105 x 38
 60 - 75uf C027 100 x 38
 80 - 100uf C028 122 x 38
 100 - 125uf C029 126 x 38
 125 - 156uf C030 126 x 38

Electrolytic Capacitors with high capacitance

Start Capacitor DimensionsThese Motor Start Capacitors are electrolytic capacitors with high capacitance, able to provide a high starting torque to the electric motor. They are then disconnected at the end of the starting to avoid overloading the motor windings. The capacitor is designed for intermittent duty only and is switched off straight after starting, usually automatically. These capacitors are made with self healing metalized polypropylene film dielectric. And are available in the following sizes:

250 VOLT 320 VOLT
Cap Range Len x dia (mm) Part no. Cap Range Len x dia (mm) Part no.
25.5 - 31.5uf 86 x 46 COM1 25.5 - 31.5uf 86 x 46 COM14
31.5 - 40uf 86 x 46 COM2 31.5 - 40uf 86 x 46 COM15
 40 - 50uf 86 x 46 COM3  40 - 50uf 86 x 46 COM16
 50 - 63uf 86 x 46 COM4  50 - 63uf 86 x 46 COM17
 63 - 80uf 86 x 46 COM5  63 - 80uf 86 x 46 COM18
 80 - 100uf 86 x 46 COM6  80 - 100uf 86 x 46 COM19
100 - 125uf 86 x 46 COM7 100 - 125uf 86 x 46 COM20
125 - 160uf 86 x 46 COM8 125 - 160uf 86 x 46 COM21
160 - 200uf 86 x 46 COM9 160 - 200uf 86 x 46 COM22
200 - 250uf 86 x 46 COM10 200 - 250uf 86 x 46 COM23
250 - 315uf 86 x 46 COM11 250 - 315uf 86 x 46 COM24
315 - 400uf 86 x 46 COM12  

Comor Motor Start Capacitor