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4 Amp Slo Blo 229-004 - Bubbles Supply

4 Amp Slo Blo 229-004

Part #: 229-004

$0.81
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this hardware/other

This Allied Innovations 4 Amp Slo Blo fuse (model 229-004) protects electrical circuits in spas and hot tubs from overcurrent damage. The slow-blow design provides time delay protection, preventing nuisance tripping during normal motor startup surges while still safeguarding against sustained overloads. Rated for 125V systems, this OEM replacement fuse ensures reliable protection for pumps, heaters, and control systems.

At Bubbles Supply, we guarantee this fuse delivers the exact fit your spa needs, backed by our comprehensive 1-year warranty. Every order ships the same day for minimal downtime, because we understand how important getting your spa running properly is. Always verify the amperage rating matches your spa's electrical requirements before installation, and replace fuses only with the same amp rating to maintain proper circuit protection.

Exact part number

229-004

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Also known as / Replaces

This part replaces or is interchangeable with:

  • 4 amp slow blow fuse
  • 4A Slo-Blo fuse
  • time delay fuse 4A 125V

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

Technical specifications

Voltage
125V
Amperage
4A

Common symptoms this part fixes

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

  • Spa completely dead after power surge
  • Control panel has no power
  • Pump or heater circuit not responding
  • Spa tripped and won't reset
  • Blown fuse visible on control board

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

Before you buy — quick checklist

  • Confirm the blown fuse reads 4A — never upsize amperage to fix a recurring blown fuse
  • Verify your control board or fuse holder accepts a standard 5x20mm or 3AG glass/ceramic body (match physical size to original)
  • Confirm system voltage is 125V — do not install a 125V fuse on a 240V circuit
  • Inspect why the fuse blew before replacing — a recurring blown fuse indicates an underlying wiring or component fault
  • Match the slow-blow (time delay) designation exactly — a fast-blow fuse of the same amperage will nuisance-trip on normal motor startup

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

Install difficulty: Easy — DIY-friendlyTypically 5-15 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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