Description
The CBB61 3.5µF 450V 4-Pin Box Type Motor Run Capacitor is a commercial-grade, heavy-duty electrical component designed to regulate speed, optimize starting torque, and maintain phase efficiency in small, single-phase alternating current (AC) fractional motors. Encased in a compact, pitch-sealed, flame-retardant rectangular resin box, it features an integrated mounting ear for stable, vibration-proof screw installation. Unlike standard wire-lead models, this unit is engineered with a 4-pin spade terminal header (two separate pairs of dual-insert male quick-connect tabs). This configuration makes swapping out old parts incredibly clean—allowing you to simply unplug the factory spade connectors from the old capacitor and snap them directly onto this new one. Built with self-healing metallized polypropylene film, it cleanly handles up to 450VAC workloads (50/60Hz) with a professional ±5% tolerance, isolating internal micro-punctures from voltage surges to prevent sudden appliance failure. Key Features 4-Pin Quick-Connect Terminals: Double-insert male spade tabs eliminate wire cutting, stripping, or wire-nut splicing. Precise 3.5µF Capacity: Tailored for medium-to-large fan motors that require slightly more torque than standard 2µF or 3µF household fans. High-Voltage Backwards Compatibility: Rated for up to 450V AC, safely replacing capacitors marked 400V, 350V, or 250V. CBB61 Box Geometry: Space-saving rectangular profile with a molded top tab for effortless anchoring. Self-Healing Technology: Extends appliance lifespan by automatically correcting minor internal electrical faults caused by grid spikes. Compatible Machines & Applications A 3.5µF box-type capacitor is a universal standard for heavy-duty, high-airflow single-phase air circulation equipment. The 4-pin design is heavily favored by HVAC and appliance manufacturers, making it perfectly compatible with: 1. Air Conditioning Equipment (Most Common) AC Outdoor Condenser Fan Motors: This is the exact specification often used to drive the outdoor condenser fan motor in residential mini-split and central air conditioning systems. Indoor Air Handlers / Evaporator Blowers: Powers multi-speed squirrel-cage blower fans inside indoor AC climate control units. 2. High-Performance Ventilation Fans Commercial Exhaust Fans: Found in restaurant kitchen hood exhaust systems and heavy-duty industrial inline duct ventilation blowers. Industrial Pedestal Fans: Powers high-velocity, multi-speed oscillating workshop and warehouse floor fans. Large Ceiling Fans: Used to fix high-end or large-blade ceiling fans that have become sluggish, hum loudly, or fail to start spinning on their own. 3. Small Motorized Industrial Appliances Dehumidifiers & Air Purifiers: Drives the heavy circulation blowers required to pull air through dense HEPA filters or condenser coils. Evaporative “Swamp” Coolers: Powers the primary heavy-duty blower fan motor in mid-sized commercial cooling units. ⚠️ Installation Safety Tip: Because this capacitor features exposed metal pins, it poses an immediate shock hazard if handled raw. Even with the appliance fully unplugged, a 3.5µF capacitor can pack a sharp, painful electrical sting. Always ensure the power breaker is off, and use an insulated screwdriver to bridge the opposing metal terminal pins to safely discharge the stored electricity before unplugging the wires!






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