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Motor Start Capacitors

12 products

Motor start capacitors temporarily store an electrical charge to deliver extra torque (where torque is the measure of a rotational or twisting force) during motor startup. They exit the circuit once the motor reaches its operating speed, unlike run capacitors, which help maintain a motor's running performance. Motor capacitors are primarily distinguished by their capacitance value, which is measured in microfarads (mfd or µF). When replacing a start capacitor, it's important to match the microfarad rating, voltage, and dimensions to the original capacitor. Start capacitors work with motor designs designated as capacitor-start or capacitor-start/run, and they are typically used with motors that power fans, blowers, and pumps.

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Motor Start Capacitors with Resistors

Motor Start Capacitors with Resistors
These motor start capacitors come with a resistor, also known as a bleeder, that is connected to the capacitor's terminals. The resistor allows the remaining charge in the capacitor to dissipate safely once the start capacitor exits the circuit after delivering additional startup torque. Capacitors with resistors prevent accidental shock that could occur from touching exposed capacitor terminals.

165V AC

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220 to 250V AC

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330V AC

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