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Motor Start Capacitor

MOTOR START CAPACITOR briefly increase motor starting torque and allow a motor to be cycled on and off rapidly. A start capacitor stays in the circuit long enough to rapidly bring the motor up to a predetermined speed, which is usually about 75% of the full speed, and is then taken out of the circuit, often by a centrifugal switch that releases at that speed. Afterward the motor works more efficiently with a run capacitor. StartCap 250V Series Capacitors are manufactured in PP Cylindrical case and designed for use in any Motor Start Application. Available in: Dry Type
Motor Start Capacitors
Group 18 (5)

Key Features

Wide Voltage

Suitable for 275VAC, 50/60Hz AC power systems, ensuring reliable operations

Stable Capacitance

Maintains capacitance stability over time, even under varying voltage, temperature, and load conditions.

Low DPPM

High Reliability and consistent field performance.

Self-Healing

Utilizes Metallized Polypropylene (MPP) film with self-healing properties

Applications

Single Phase Motor Capacitor
Single Phase Motor Capacitor
Air Conditioner Capacitor
Air Conditioner Capacitor
Submersible Pump Capacitor
Submersible Pump Capacitor
Mono Block Pump Set Capacitor
Mono Block Pump Set Capacitor
Industrial Blower Capacitor
Industrial Blower Capacitor

Technical Specifications

Parameter Technical Details
Capacitance Range
40/60 µF to 250/300 µF
Capacitance Tolerance
±5%
Available Ratings
30 µF to 135 µF
Rated Voltage
250 Volts
Rated Frequency
50 / 60 Hz
Power Factor / Tangent Loss Angle
0.002
Case Material
PP & Aluminium Can
Dielectric
Metallized P.P. Film
Insulation Voltage between Terminals
2 x Rated Voltage AC
Operating Temperature Range
-25°C to +85°C
Insulation Voltage between Case & Terminals
2000 VAC
Terminals
Flexible Wire / Pin Type
Polarity
Can be connected either way
Safety Class
P0
Standards
IS 2993 – 1998
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  • FAQs

Helping You Make the Right Choice

What is the purpose of a Motor Start Capacitor?
It provides the initial surge of energy needed to start single-phase motors, ensuring a smooth and powerful start.
No, using a capacitor with incorrect capacitance can damage the motor or reduce its performance. Always match the specified rating.
Symptoms include the motor failing to start, buzzing sounds, or excessive heat generated during operation.
Yes, they are specifically designed to handle high-torque demands, making them ideal for heavy-duty equipment.