AC Motor Capacitors Manufacturers

AnHui JuanKuang Electric Co., Ltd. has manufactured film capacitors in Ningguo, Anhui Province, China since 1995, and AC motor capacitors are one of our core product lines. These are CBB-series metallized polypropylene capacitors that start, run, phase-shift and protect single-phase induction motors in washing machines, air conditioners, fans and refrigeration equipment.

We control the full chain in one plant: metallized film production on German coating equipment, winding on Swiss automatic machines, welding, spray coating, assembly and automated testing. Capacitance, voltage, case dimensions and packaging are built to the customer drawing, and OEM/ODM programmes run from first sample through serial supply.

Our AC Motor Capacitor Range

As a Motor Run Capacitors Manufacturers, we match product configuration to the application, operating limits, interfaces and acceptance criteria defined for each project.

The range is organised by the appliance the capacitor serves, because terminal geometry, case format and duty cycle differ more between platforms than the dielectric does. Every family below shares the same metallized polypropylene base film and the same in-house winding, coating and test lines.

Series and Case Selection at a Glance

Application Fit Inside the Appliance

In a single-phase motor the run capacitor stays in circuit and sets the phase angle between the main and auxiliary windings; a start capacitor delivers a larger boost for a few seconds and then drops out. Our families cover run duty, start duty and the dual-element arrangements used on compressor-driven appliances.

• Continuous run: capacitance value and voltage class are matched to the winding data so the motor holds torque and temperature under rated load.
• Compressor starting: aluminium-can formats carry the larger values needed at the compressor terminal block, with terminal spacing aligned to the overload protector.
• Ventilation and fan duty: low-profile plastic cases fit shallow motor housings and fan canopies.
• Noise and voltage stability: the capacitor filters and tunes the auxiliary circuit, which affects acoustic behaviour in washers and fans.

Materials and Construction

Our CBB capacitors use metallized polypropylene film, which gives favourable high-frequency behaviour, temperature stability, a strong self-healing property and a compact size for a given rating. Self-healing clears a local film breakdown without permanent loss of the dielectric, which matters in motors that see repeated switching and voltage transients.

• Metallized film coated in-house, then slit and wound to the element design.
• Wound elements welded, spray-coated and assembled into cylinder plastic, cylinder aluminium, oval aluminium or square plastic cases.
• Case fill, terminal material and lead insulation selected against the ambient and humidity the appliance sees in service.
• Marking, label language and case colour aligned to the customer's production and service documentation.

Critical Specifications We Confirm Before Production

A motor capacitor is a mechanical part as much as an electrical one, so the drawing review covers the envelope and the connection as closely as the rating.

• Capacitance value and tolerance against the motor or compressor data sheet.
• Rated AC voltage, rated frequency (50 Hz or 60 Hz operation) and expected transient level.
• Operating temperature range required by the appliance's ambient and duty profile.
• Case diameter, height and footprint, including bracket, stud or ear position.
• Terminal type, spade size, lead length, connector and harness orientation.
• Discharge resistor, internal protection and any safety-class requirement for the target market.
• Marking content, packaging format and pallet configuration for the receiving line.

Configuration, Line Integration and Installation

We build to the mating geometry the assembly line already uses, so the capacitor drops into the existing harness and mounting point without a redesign. That typically means matching spade terminals or lead sets to the compressor plug, holding the can height under a covers limit, and orienting the label so it can be read after installation.

For automated or high-volume lines we agree the packaging format, unit orientation in the carton and any taping or reel arrangement in advance. Installation guidance is supplied with the part: correct terminal torque, safe discharge before handling, routing of leads away from hot surfaces, and the mounting position that keeps the case within its rated ambient.

Quality Assurance, Compliance and Acceptance

JuanKuang operates ISO9001 quality management and ISO14001 environmental management systems, and our products hold UL, VDE, CE and CQC certification covering market access in North America and Europe. CBB65 AC motor capacitors obtained VDE certification in 2015. Material compliance statements cover RoHS, REACH, TSCA and POPs.

• Incoming film and raw material inspection before winding.
• Process parameter control and in-line inspection at winding, welding and coating.
• Semi-finished and finished product testing, with 100% final inspection against the agreed specification and international standards.
• Capacitance, loss and insulation measurements reported where the purchase specification calls for them.
• Shipment quality control and retained samples for traceability.

Manufacturing Capacity and Programme Support

The plant covers 53,000 m² with a 2,000 m² R&D and testing centre and an annual output of 40 million capacitors. Annual export volume of air conditioner and refrigerator compressor capacitors exceeds 10 million units, supplied to appliance makers and distributors across North America, Europe, Southeast Asia and the Middle East.

• German metallizing coating equipment and Swiss fully automatic winding machines.
• More than 90 patents, including 16 invention patents, supporting element and case development.
• OEM and ODM development from customer drawings or physical samples.
• Long-term supply continuity for established appliance platforms.

Information We Use to Configure Your Solution

A workable proposal starts from the motor and the assembly line, not from a catalogue page. Send us the following and we will return a drawing, specification and quote matched to the application.

• Motor or compressor rating, supply voltage and frequency, and whether the capacitor is run, start or dual duty.
• Required capacitance, tolerance, rated voltage and operating temperature.
• Available mounting envelope, terminal type and lead or harness drawing.
• Target market approvals and any customer-specific test or acceptance criteria.
• Annual volume, call-off pattern, packaging format and marking requirements.
• Sample quantities and the qualification schedule for the appliance programme.

Frequently Asked Questions

Which AC motor capacitor series does JuanKuang manufacture?

We manufacture the CBB60, CBB61, CBB65, CBB65A and CBB66A series in cylinder plastic, cylinder aluminium, oval aluminium and square plastic cases, covering washing machine, air conditioner, fan and refrigerator applications.

Can capacitance, case size and packaging be customized?

Yes. Capacitance, voltage, dimensions and packaging are all customizable, and OEM/ODM production is our core business. We develop and manufacture from the drawings or samples a customer provides.

Which certifications support entry into North American and European markets?

Our products hold UL, VDE, CE and CQC certification, and the company operates ISO9001 and ISO14001 systems. RoHS, REACH, TSCA and POPs compliance statements are issued for our capacitor products.

Are you a factory or a trading company?

We are a direct manufacturer with our own production site in Ningguo City, Anhui Province, China, plus an international sales department that handles the process from production through export.

What annual output can you support?

Annual output is 40 million capacitors across the film capacitor range, with air conditioner and refrigerator compressor capacitor exports alone exceeding 10 million units per year.