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40 Amp Contactor DPC-120 - Bubbles Supply

40 Amp Contactor DPC-120

Part #: DPC-120

$29.03
In stock — ships today
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About this relay/contactor

The Allied Innovations DPC-120 is a 40-amp DPST contactor designed for spa electrical systems requiring reliable high-current switching. This heavy-duty contactor features a 115VAC coil and handles up to 40 amps, making it ideal for controlling pumps, heaters, and other major spa components in residential and commercial hot tubs.

Built to Allied Innovations' OEM specifications, this contactor delivers the exact fit and performance your spa was designed for. At Bubbles Supply, we guarantee precise fitment and back every DPC-120 with our comprehensive 1-year warranty. Most orders ship the same day, getting your spa back online fast. Always verify your existing contactor's voltage and amperage ratings before installation, and ensure power is completely disconnected before beginning any electrical work on your spa system.

Exact part number

DPC-120

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 40 amp contactor
  • DPC120
  • DPST contactor
  • spa contactor relay

Looking for an older part number? Check our supersession lookup tool

Technical specifications

Voltage
115VAC coil
Amperage
40A

Common symptoms this part fixes

If your spa is showing any of these signs, this part is likely your fix:

  • Spa heater not turning on
  • Pump not receiving power despite controller commanding it
  • Contactor chattering or buzzing under load
  • Spa component cycling on and off erratically
  • Burned or pitted contactor contacts causing intermittent power
  • Spa board sending signal but heater or pump not energizing

Not sure if this is your problem? Try our diagnostic centre or .

Before you buy — quick checklist

  • Confirm your existing contactor's coil voltage — this unit requires a 115VAC control signal
  • Verify the amperage rating on your old contactor matches 40A before ordering
  • Check the pole configuration — this is a DPST (Double Pole Single Throw) design, not DPDT
  • Inspect your existing contactor's terminal layout and mounting footprint to confirm physical fitment
  • Confirm your spa control board outputs a 115VAC coil signal — some boards use 24VAC or 12VDC

Reading the checklist now prevents 90% of returns. Worth the 60 seconds.

Install difficulty: Medium — Some experience neededTypically 30-60 minutes

Warranty

1 year manufacturer warranty against defects

Covers manufacturing defects. Does not cover improper installation, normal wear, or accidental damage.

Warranty claims: warranty@bubblessupply.com

Perfect Fit Guarantee

Ordered with our help and the part doesn't fit? Contact us before installation. We'll resolve it with an exchange, replacement recommendation, or return approval.

Learn about our Perfect Fit Guarantee →

Shipping

We ship across the US and Canada. US orders ship from our US warehouse to US customers; Canadian orders ship from our Canadian warehouse to Canadian customers — no cross-border shipping, no surprise duties. In-stock orders placed before 3pm CT ship same day. Standard shipping $9.95 flat rate. Free shipping on orders over $200. Express options available at checkout.

Returns

30-day hassle-free returns on unused parts in original packaging. Contact us before returning to receive your RMA number.

Frequently asked questions

Check the Compatibility section above to confirm fitment for your spa brand and model. If your model is not listed, use our fitment selector at /pages/find-my-part or ask our parts AI for a personalized recommendation.

In-stock orders placed before 3pm CT ship the same day. You will receive tracking information by email as soon as your order ships.

We accept returns within 30 days of delivery for unused items in original packaging. Email returns@bubblessupply.com with your order number to start a return. Installed electrical parts cannot be returned for safety reasons.

Yes, all new parts come with a 1-year warranty against manufacturing defects. Warranty does not cover damage from improper installation or normal wear and tear.

Customer reviews

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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