CBB61 1UF 450V Fan Starting Capacitor

CBB61 1UF 450V Fan Starting Capacitor provides the necessary phase shift and stable run current required for single-phase AC motors, particularly in small household and industrial fans. This metallized polypropylene film capacitor, encased in a flame-retardant plastic shell, excels in durability and self-healing properties, ensuring a long and reliable service life. Consequently, it offers superior performance compared to lower-quality electrolytic alternatives. The CBB61 1µF 450V rating is specifically designed to handle the high transient voltages and continuous operation demands of 50/60 Hz utility power systems. Furthermore, replacing a faulty fan capacitor with this specific rating can restore your motor’s original speed and torque, optimizing energy efficiency and extending the appliance’s lifespan.

Key Features:

• Metallized Polypropylene Film: This construction provides excellent self-healing characteristics, enabling the capacitor to recover from minor dielectric breakdowns, thereby ensuring high reliability.
• High Voltage Rating: Rated for 450 V_AC, it offers a substantial safety margin for standard 120 V_AC and 220 V_AC line voltages, enhancing component durability.
• Low Dissipation Factor (DF): Achieves low energy loss and minimal temperature rise during continuous operation, maximizing efficiency in run applications.
• Flame-Retardant Case: The square plastic case uses a UL 94 V-0 or equivalent flame-retardant material, offering reliable safety.
• Tolerance: Provides a tight capacitance tolerance of ±5% or ±10% (typically ±5%), which ensures precise motor timing and speed control.

Technical Specifications:

• Nominal Capacitance (C): 1 µF (Microfarad)
• Rated AC Voltage (U_N): 450 V_AC
• Capacitance Tolerance: ±5% (J Class) or ±10% (K Class)
• Rated Frequency: 50 Hz / 60 Hz
• Dissipation Factor (tan δ): ≤ 0.002 (at 1 kHz)
• Insulation Resistance (IR): ≥ 3000 S (T-T: Terminal to Terminal)
• Climatic Category: 40/70/21 or 40/85/21 (−40°C to +70°C or +85°C)

Mechanical Specifications:

• Dielectric Material: Metallized Polypropylene Film (MPPF)
• Case Material: High-quality, Flame-Retardant Plastic (typically PBT)
• Sealing: Sealed with epoxy resin for excellent moisture and oil resistance.
• Terminals: Flexible twin wires (pigtail leads) or quick-connect terminals for easy installation.

Dimensions:

• Case Style: Rectangular Box (Dimensions vary slightly by manufacturer)
• Typical Length (L): ≈ 36 mm to 37 mm
• Typical Width (W): ≈ 10 mm to 13 mm
• Typical Height (H): ≈ 20 mm to 23 mm
• Mounting Hole: Includes a fixing screw hole (mounting boss) on the bottom or side of the casing for chassis mounting.

Pinout and Wiring:

• Polarity: This is a non-polarized (AC) component, so you can connect the two leads in either direction.
• Connection Point: Always connect the CBB61 capacitor in series with the auxiliary (start/run) winding of the single-phase motor.
• Safety Note: However, always ensure you discharge the capacitor completely before handling or replacing it to avoid electric shock.

Datasheet Reference:

• Download CBB61 Series Motor Running Capacitor Datasheet

Commonly Used in:

• Ceiling and Exhaust Fans: Providing the essential start-up torque and maintaining motor rotation efficiency.
• Range Hoods/Ventilators: Used in the motor assembly to ensure quiet and reliable operation.
• Small Single-Phase AC Motors: Integral to the running circuit of various miniature pumps and small power appliances.

Applications:

• Motor Start and Run: Functions as both a starting aid and a continuous running capacitor for permanent split capacitor (PSC) motors.
• Phase Shifting: Creates the necessary electrical phase shift to establish the rotating magnetic field, allowing the motor to run smoothly.
• Motor Repair: Serves as a direct replacement component for malfunctioning fan capacitors that cause slow speeds or failure to start.

Equivalent Models:

• CBB61 1uF 400V / 500V: Functionally interchangeable, although the 450V model is the most common standard for universal use.
• Alternative Brands (e.g., Suntan TS11, Jinmao): You can use any metallized film motor run capacitor with the same 1µF capacitance and a voltage rating of 450V_AC or higher.

Package Includes:

• 1 x CBB61 1UF 450V Fan Starting Capacitor