CBB61 7.4+3.6uF 420V S3, Square-Body Explosion-Proof Dual Run Capacitor with Wire Leads

This is a very common starting and running capacitor in power electronic circuits. Simply put, it acts like a "quick-acting accelerator" and "stabilizer" for motors, specifically responsible for providing phase shift during startup for single-phase motors like fans or water pumps, and ensuring smooth power delivery during operation. Core Specifications and Characteristics In-Depth Analysis: Capacity and Voltage Rating (2uF / 450V):The 2uF represents its charge storage capacity, determining the starting force of the motor; 450V is its peak voltage rating. In a household 220V circuit, the motor generates a high reverse induced electromotive force at startup; therefore, the 450V rating provides sufficient electrical redundancy to prevent high-voltage breakdown. S3 Safety Rating:S3 indicates that this capacitor has the highest level of explosion-proof safety design. It uses segmented metallized film technology internally, ensuring that even under extreme fault conditions, the capacitor will only fail (open circuit) without producing an open flame or exploding, ensuring the overall safety of household appliances. 2+2 Interface Layout (Terminal): This plug-in design not only facilitates wiring but also extends parallel logic. Two terminals on each side allow users to directly bridge other loads or sensors without damaging existing wiring, making it a standard industrial module interface. Fully Sealed Epoxy Resin Process: The product uses an epoxy resin-encapsulated shell. This process effectively isolates it from moisture and dust in the air, maintaining extremely high insulation resistance even in humid environments like washing machines or high-temperature oil fume environments like range hoods. Self-Healing Mechanism: This is the core advantage of metallized film capacitors. If a tiny weakness in the internal dielectric leads to breakdown, the metal layer at the fault point evaporates instantly, automatically repairing the insulation performance. This "self-healing" capability gives it an extremely long service life and surge resistance. Typical Application Scenarios: This type of capacitor is widely used in the motor compartments of the following devices: Air Circulation Systems: Floor fans, ceiling fans, exhaust fans. Kitchen exhaust systems: Chinese and European style range hoods. Small-scale hydraulic equipment: Household automatic booster pumps and circulation pumps. Washing equipment: Spin-drying systems for semi-automatic and fully automatic washing machines.

This CBB61 4μF 450V is a film capacitor specifically designed for AC motors, commonly used to regulate current phase and ensure the motor can smoothly generate a rotating magnetic field. It features a fully sealed resin encapsulation, providing extremely high physical stability, making it a core component for ensuring the long-term stable operation of household appliance motors. Performance Characteristics and Technical Logic: Self-Healing and Reliability: Utilizing metallized thin-film technology, even in the event of localized overload breakdown, the dielectric quickly recovers its insulating state. This "self-healing" characteristic significantly extends the device's service life. Dielectric Loss and Energy Efficiency: This device exhibits extremely low dielectric loss, meaning minimal internal heat generation during long-term operation. The high insulation resistance design effectively prevents leakage current, improving the overall conversion efficiency of the motor. Shock Resistance and Overload Capacity: This capacitor demonstrates strong resistance to the inrush current generated during motor startup, maintaining constant parameters even under conditions of significant voltage fluctuations, preventing burnout. Encapsulation and Weather Resistance: The casing is made of flame-retardant plastic, and the interior is filled with epoxy resin. This fully sealed structure effectively isolates moisture and dust, ensuring excellent performance even in humid or temperature-sensitive environments (such as pump rooms and kitchens). Wiring Type (1+1 Terminal) The "1+1" refers to the terminal layout on the top of the capacitor, meaning each end has a single pin or solder pad. This structure simplifies wiring and is suitable for quick installation in confined spaces. Typical Applications: This type of capacitor is primarily used to drive single-phase AC motors and is commonly found in the following devices: Kitchen and Bathroom Equipment: Range hoods, exhaust fans, etc. Household Appliances: Floor fans, washing machine spin dryers. Small Power Applications: Household automatic water pumps and small industrial ventilation systems.

The CBB61 capacitor is an indispensable power component in AC motors; simply put, it acts as both a "booster" and a "sustainer" for the motor. This 7.5μF 450V S0 1+1 chip capacitor is primarily responsible for providing starting torque to single-phase motors in devices such as fans, washing machines, or water pumps, and ensuring stable current phase during motor operation. The following is an analysis of the core characteristics of this model: Core Specifications and Physical CharacteristicsCapacitance and Voltage Rating (7.5μF / 450V): The 7.5μF capacitance provides precise phase shift compensation for the motor. The 450V rated voltage provides ample voltage margin, easily handling mains power fluctuations. 1+1 Terminal (Chip Leads): Utilizing a standard dual-chip structure, installation requires no soldering; wiring is completed simply by plugging and unplugging, greatly improving assembly and maintenance efficiency. S0 Safety Rating: Indicates basic safety protection capabilities and extremely high reliability under normal operating conditions. Operating Mechanism and Technical Advantages: Excellent Self-Healing: This is the "miracle" of metallized film capacitors. When a tiny breakdown point occurs in the internal dielectric due to overvoltage, the surrounding metal plating evaporates rapidly, automatically isolating the fault point and instantly restoring the capacitor to normal operation, significantly extending its lifespan. Low Loss and High Insulation: The internal materials have extremely high energy conversion efficiency, generating almost no excess heat. High insulation resistance ensures no current leakage, guaranteeing the safety of motor operation. Fully Sealed Epoxy Resin Encapsulation: Fully sealed with rigid epoxy resin, effectively isolating moisture and dust, allowing it to maintain stable performance even in harsh environments such as kitchen and bathroom appliances (e.g., range hoods, water pumps). Application Areas:Motor Starting and Running: Widely compatible with various single-phase asynchronous motors. Whether it's household floor fans and ceiling fans, or small industrial and commercial exhaust fans, water pumps, and washing machines, it provides stable starting current and operational assurance. Environmental adaptability: It has extremely strong resistance to surge current and overload capacity. Even when faced with frequent start-stop requirements, it can maintain stable output frequency and is not prone to failure.

The CBB61 11+3μF is a typical metallized polypropylene film capacitor, employing a dual-capacitance parallel package design (11µF and 3µF combination) to provide precise phase-shifting current for induction motors. Its core technology focuses on an S3-level explosion-proof safety architecture, combined with epoxy resin full-sealing technology, ensuring a stable excitation magnetic field even in harsh electrical environments. It is a key power replenishment unit for the starting and operation of induction motors in fans, washing machines, and range hoods. Technical Characteristics Analysis: Dual-Capacitance Coordination Mechanism (11+3μF)This capacitor uses a composite package, enabling it to simultaneously provide charge compensation for different windings or speed settings of the motor. This design not only saves installation space but also ensures the continuity of magnetic field rotation during high-speed/low-speed switching. Voltage Redundancy and Safety Rating (420V & 500V S3)The 420V and 500V markings represent its capacity to withstand high transient voltages. The S3 explosion-proof rating means it has an internal physical failure protection mechanism, preventing the casing from bursting or catching fire even in the event of dielectric breakdown due to extreme overload, meeting industrial-grade safety standards. Self-healing dielectric technologyUtilizing metallized thin-film technology, when a localized electrical breakdown occurs internally, the metal plating at the breakdown point evaporates rapidly, forming an insulating zone, allowing the capacitor to automatically restore its electrical performance. This "self-repair" capability significantly extends the component's lifespan under surge current. High impedance and low dissipation lossesThe capacitor has extremely low internal dielectric losses, effectively suppressing heat generation during operation. High insulation resistance ensures extremely low leakage current, ensuring that reactive power compensation remains within an efficient range during long-term motor operation. Fully sealed weather-resistant structureEpoxy resin vacuum potting completely isolates the capacitor from external moisture and dust. This structure allows the capacitor to maintain stable physical strength and constant electrical parameters even in the high-humidity environment of a washing machine or the high-temperature, oily fume environment of a range hood. Strong overload and surge protection capabilitiesOptimized to handle the massive induced current generated during motor startup. Its internal electrode structure is reinforced to withstand charge surges from frequent start-stop cycles, preventing capacity decay or breakdown failure due to current surges.

This CBB61 12μF 250V S3-grade explosion-proof leaded capacitor is essentially a "booster" and "stabilizer" for AC motors. It features a fully sealed epoxy resin encapsulation and is specifically designed for the starting and continuous operation of household appliances such as fans, washing machines, and range hoods. The S3-grade explosion-proof certification means it possesses extremely high safety under extreme abnormal conditions, making it a core power electronic component ensuring efficient and reliable motor operation. Key Features: Electrical Loss and Insulation Protection: The internal dielectric of the component has extremely low physical losses, significantly reducing heat generation during operation. The high insulation resistance design ensures precise current flow within a predetermined path, effectively eliminating leakage risks and improving the purity of the overall circuit. Intelligent Self-Healing and Consistent Performance: It possesses excellent self-healing characteristics. Even if the internal dielectric experiences a minor breakdown point due to overvoltage, it can instantly restore its insulation performance without affecting overall function. This characteristic, combined with its physicochemical stability, ensures minimal capacitance fluctuation over a long service life. Shock Resistance and Overload Redundancy: This component possesses extremely strong shock resistance to the surge current generated during motor startup. Simultaneously, its physical architecture effectively absorbs overload pressure for a short period when the circuit load exceeds the rated power, preventing catastrophic component failure. S3 Explosion-Proof Safety Architecture: As a key standard in explosion-proof ratings, the S3 architecture means that in the event of irreversible damage, its internal pressure relief mechanism ensures that the casing does not burst or produce an open flame. This design strictly limits the risk of electrical faults to the component's interior, protecting the safety of the surrounding circuit environment. Fully Sealed Environment Adaptability: Utilizing epoxy resin vacuum potting technology, complete physical isolation is achieved. This structure not only resists the intrusion of external moisture and dust but also maintains stable electrical connections in the high-vibration operating environment of motors, adapting to various complex household appliance operating environments.

CBB61 7.4+3.6uF 420V S3, Square-Body Explosion-Proof Dual Run Capacitor with Wire Leads: an explosion-proof dual run capacitor with lead wires, built for motors that need two capacitance values in one safety-protected component. The CBB61 series is a square-style motor capacitor, and the S3 safety class is part of this model's designation.Key Features:• A square-style CBB61 body with flexible wire leads, so the capacitor can be tucked into tight fan housings.• Two sections, 7.4uF and 3.6uF, combined in one part to save a mounting point and a connection.• Self-healing film layer: if a weak spot breaks down, the surrounding metal layer evaporates and local insulation is restored.• High insulation resistance reduces leakage current and helps the capacitor hold charge efficiently between cycles.• Wire leads make positioning easy when mounting space is limited.• It withstands brief overloads without a sudden loss of capacitance.Technical Specifications:• Model: CBB61; Capacitance: 7.4uF + 3.6uF (two sections); Rated voltage: 420V; Safety class: S3• Construction: explosion-proof body with wire leads• Dimensions and lead specifications can be confirmed against your sample.Typical Applications:• Fans that need two capacitance values from a single component.• Small household appliances that specify 420V-rated capacitors.• Compact housings where flexible leads route more easily than rigid terminals.Selection and Replacement Tips:• 420V is a specific rating, so match it to the original part instead of rounding up to 450V without checking the design.• Check mounting space and connection style so the new capacitor fits without modification.Why Buy from Cixi Riyi:• Plant scale: a 25,000 square meter production site on the south bank of Hangzhou Bay Bridge, with convenient logistics.• Custom builds: we develop and produce capacitors from your drawings or samples.

CBB61 6uF 450V S3, Square-Style Explosion-Proof Run Capacitor for Fan and Blower Motors: an explosion-proof run capacitor with lead wires, a square-style CBB61 part for fan and blower motors. The 450V rating suits common single-phase supplies, and the S3 safety class adds protection if the capacitor fails.Key Features:• Square-style CBB61 construction with direct-wire leads for simple connection into a motor harness.• An S3 safety class explosion-proof design gives an added layer of protection if the capacitor fails.• Metallized polypropylene film dielectric with self-healing ability: a small breakdown point clears itself instead of ending the capacitor's life.• Low dielectric loss means little energy turns into heat, so the capacitor and motor run cooler.• Lead-wire connection suits direct wiring into a motor harness without extra connectors.• Strong impact (surge) current resistance helps it handle the high peak current at motor start-up.Technical Specifications:• Model: CBB61; Capacitance: 6uF; Rated voltage: 450V; Safety class: S3• Construction: explosion-proof body with wire leads• Detailed electrical parameters for this model are available on request.Typical Applications:• Wall and ceiling exhaust fans in homes and small offices.• Ventilation fans that run for long hours every day.• Household air-moving equipment such as small air purifiers and circulators.Selection and Replacement Tips:• Ask Cixi Riyi for samples or an OEM quote if you plan to use this model in a new fan design.• Always compare capacitance (uF), rated voltage (V) and terminal type with the original part.Why Buy from Cixi Riyi:• Plant scale: a 25,000 square meter production site on the south bank of Hangzhou Bay Bridge, with convenient logistics.• Direct from the manufacturer: Cixi Riyi Capacitor Factory has produced AC motor capacitors since 1997.

CBB61 7.4uF 420V S3, Explosion-Proof Run Capacitor for Non-Standard 7.4uF/420V Nameplates: an explosion-proof capacitor with lead wires, designed for motors whose nameplate calls for 7.4uF at 420V. Odd values like 7.4uF are hard to substitute with standard sizes, so an exact match helps keep torque and temperature within design limits.Key Features:• An exact 7.4uF value for motors whose nameplates use non-standard numbers that standard sizes cannot match.• S3 safety class combined with wire leads and a square-style CBB61 body.• Non-polarized film construction suits AC circuits, and automatic self-healing limits damage from accidental pulses.• High insulation resistance reduces leakage current and helps the capacitor hold charge efficiently between cycles.• Lead-wire connection suits direct wiring into a motor harness without extra connectors.• Strong impact (surge) current resistance helps it handle the high peak current at motor start-up.Technical Specifications:• Model: CBB61; Capacitance: 7.4uF; Rated voltage: 420V; Safety class: S3• Construction: explosion-proof body with wire leads• Ask us for the full parameter sheet and test data for this model.Typical Applications:• Fans that specify a 420V capacitor on the nameplate.• Compact household drives where an exact capacitance keeps torque steady.• Maintenance stock for installed equipment that was built around 7.4uF at 420V.Selection and Replacement Tips:• Matching dual versions such as 7.4+3.6uF are also listed, so check which one your motor really uses.• Check mounting space and connection style so the new capacitor fits without modification.Why Buy from Cixi Riyi:• Quality systems: the factory holds ISO9001 and ISO14001 certification, and the product range carries approvals such as CQC, TUV, VDE, IMQ, UL and CE; ask which certificate applies to this model.• Custom builds: we develop and produce capacitors from your drawings or samples.