Diversitech TTMJ340 Start Capacitor 340-408 Mfd 110/125V

Product Description

The DIVERSITECH TTMJ340 is a motor start capacitor rated at 340 to 408 microfarads (MFD) and 110/125 volts, designed to provide the high starting torque required by single-phase compressor and fan motors in HVAC equipment. Start capacitors deliver a brief, powerful energy surge to the motor windings at startup, then drop out of the circuit once the motor reaches operating speed. This part is installed by licensed HVAC technicians servicing residential and light commercial air conditioning, heat pump, and refrigeration systems where motor start assist is required.

This capacitor fits applications where the original equipment calls for a start capacitor in the 340 to 408 MFD range at 110 or 125 volt ratings. Typical installations include single-phase compressor motors and condenser fan motors that require a start capacitor to overcome high-inertia startup loads. It is commonly used during seasonal tune-ups, compressor replacements, and hard-start kit installations where the existing start capacitor has failed or degraded.

Key Features

• 340 to 408 MFD capacitance range provides startup torque for single-phase motors
• Rated for 110/125 volt circuits, compatible with standard residential HVAC supply voltages
• Designed for intermittent-duty start capacitor service, dropping out of circuit after motor reaches speed
• Suitable for use in hard-start kit assemblies alongside a potential relay

Compatibility

Designed as an OEM-style replacement start capacitor for single-phase compressor and fan motor applications in residential and light commercial HVAC systems requiring a 340 to 408 MFD, 110/125 volt start capacitor.

Installation Notes

Installation should be performed by a qualified HVAC technician. Disconnect and lock out all power to the unit before handling capacitors, as capacitors retain a dangerous charge even after power is removed and must be safely discharged prior to service. Verify the MFD range and voltage rating match the equipment nameplate or OEM specification before installation. Local electrical codes and NEC guidelines apply to capacitor replacement in HVAC equipment.