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9-7376 - Thermal Dynamics 9-7376 Replacement Inrush Resistor

Packaging: pack of 1
$26.74/EA $16.02/pack of 1 only $16.02/EASave 40%

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OVERVIEW

Get Your Machine Running Again with the 9-7376 Resistor

Is your Thermal Dynamics plasma cutter refusing to power up? Or perhaps it trips the breaker the moment you flip the switch? A common culprit in older or heavily used machines is the inrush resistor. The Thermal Dynamics 9-7376 Inrush Resistor is the genuine replacement part you need to fix the "soft start" circuit in your equipment. This small but mighty component acts as a gatekeeper for electricity when you first turn your machine on, preventing a massive surge of power from frying sensitive internal electronics.

When this resistor burns out, your machine is effectively dead in the water. Instead of replacing expensive circuit boards or buying a whole new unit, a simple component swap is often all that is required. This is an authentic Thermal Dynamics part, meaning it is manufactured to the exact specifications required by your machine. Using generic resistors in this application is risky because they may not handle the high-energy pulse that occurs every time you start the welder.

Installation Note: This is an internal electrical component. Installation requires opening the machine case and working near high-voltage capacitors. We recommend this repair be performed by a qualified technician or someone experienced with power supply electronics. Always ensure the machine is unplugged and capacitors are discharged before servicing. Don't let a small burnt-out part keep your shop at a standstill—grab a replacement 9-7376 and get back to cutting.

Additional Information
Brand:Thermal Dynamics
Part Type:Inrush Resistor
Application:Power Supply Repair, Soft Start Circuit
Component Class:Electrical
Packaging Description:pack of 1

INCLUDED

  • 1 x Inrush Resistor (9-7376)

APPLICATIONS

  • Replacement of failed inrush resistors in Thermal Dynamics power sources
  • Repair of "dead" machines exhibiting soft-start circuit failures
  • Maintenance of inverter-based plasma cutters and welders

FAQ

It limits the initial surge of current when the machine is turned on, protecting internal capacitors and preventing breaker trips.

Common symptoms include the machine not powering on at all, or the main breaker tripping immediately upon startup. A multimeter can confirm if the resistor is open (infinite resistance).

It is not recommended. Inrush resistors must handle high pulse energy. Generic resistors with the same resistance value may fail physically under the surge load.

Yes, this is the OEM replacement part number 9-7376 for Thermal Dynamics equipment.

It is typically located on the input power board or near the main input rectifier and capacitor bank inside the power supply case.

No, it fits specific models that call for part number 9-7376. Please check your machine's parts manual or service diagram to confirm compatibility.

They can fail due to age, power surges, or if the bypass relay fails to engage, causing the resistor to carry the full load current and overheat.

No. Bypassing the inrush resistor can cause massive damage to the on/off switch, rectifiers, and capacitors, and is a fire hazard.