What is the Difference Between CBB60 and CBB65 Capacitors?

CBB60 and CBB65 are two common types of polypropylene film capacitors widely used in motors and industrial equipment. While they share similarities in dielectric material and basic functionality, their structural designs, performance characteristics, and applications differ significantly. Below is a detailed comparison:

1. Structural Differences

CBB60:

Typically consists of a single-layer metal foil and insulating material rolled into a cylindrical shape, housed in a plastic or metal shell.
Features simple coil or fast-connect terminals for wiring.

CBB65:

Uses two independent capacitor units combined into one housing, allowing multiple sliding terminals for flexible connections.
Designed with thicker internal components to handle higher power loads.

2. Manufacturing Process

CBB60:

Produced with simpler, automated processes, making it cost-effective for mass production.

CBB65:

Requires advanced techniques like film blowing, aluminum foil shaping, and heat treatment, increasing production complexity and costs.

3. Electrical Performance

Parameter	CBB60	CBB65
Capacitance Range	1–30 μF (common: 2.5–5 μF)	5–100 μF (common: 10–50 μF)
Voltage Rating	Up to 450 V AC	Up to 500–600 V AC
Lifespan	10,000–20,000 hours	30,000–100,000 hours
Power Handling	Suitable for low-power motors (e.g., fans, small pumps)	Optimized for high-power motors (e.g., air conditioners, industrial compressors)

4. Application Scenarios

CBB60:

Ideal for low-power appliances such as household fans, washing machines, and small pumps due to its compact size and affordability.

CBB65:

Designed for high-power systems like air conditioner compressors, refrigeration units, and industrial three-phase motors, where higher voltage tolerance and durability are critical.

5. Cost and Availability

CBB60 capacitors are cheaper and widely available for consumer-grade applications.
CBB65 capacitors, while more expensive, offer superior performance in demanding environments and are often customized for industrial use.

Key Takeaways

Choose CBB60 for cost-sensitive, low-power applications (e.g., household appliances).
Opt for CBB65 in high-power, high-reliability scenarios (e.g., HVAC systems).

For technical specifications or bulk purchases, refer to manufacturer catalogs on platforms like Alibaba or industry suppliers.

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