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Zebra Instruments – 3 Amp Blade Type Automotive Control Fuses (25 Pack)

Zebra Instruments – 3 Amp Blade Type Automotive Control Fuses (25 Pack)

Low stock: 2 left

Regular price $26.99 USD
Regular price Sale price $26.99 USD
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Key Features & Specifications

  • Bulk 25-pack of 3-amp fast-acting blade fuses.

  • Essential protection for 24V HVAC control boards and transformers.

  • Transparent housing for immediate visual diagnostic checks

  • Industry-standard violet color-coding for 3A identification.

  • Universal ATO/ATC fitment for all major furnace and AC brands.

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Specifications

Product Details and Key Specifications:


  • Manufacturer: Zebra Instruments

  • Part Type: Blade Type Automotive Fuse (ATO/ATC)

  • Quantity: 25-Pack (Bulk Contractor Bag)

  • Amperage: 3 Amp

  • Voltage Rating: Up to 32V (Ideal for 24VAC control systems)

  • Color-Code: Violet / Purple (Industry Standard for 3A)

  • Terminals: Zinc Alloy Blade

description

Zebra Instruments – 3 Amp Blade Type Automotive Control Fuses (25 Pack)

This 25-pack of Zebra Instruments 3-Amp fuses provides a bulk supply of essential protection for modern HVAC control boards and low-voltage circuits. These automotive-style (ATO/ATC) blade fuses are the industry standard for safeguarding 24V transformers and integrated furnace controllers (IFC) against overcurrent caused by short circuits. By acting as a sacrificial link, these fuses prevent expensive damage to the system's primary control board or transformer when an electrical fault occurs.

Precision-engineered for the HVAC trade, these fuses are designed to "blow" instantly upon reaching a 3-amp load, protecting delicate microprocessor-based components. The bulk 25-piece pack is a staple for service technicians, ensuring you always have a replacement on hand during the diagnostic process. Each fuse features a transparent housing for quick visual troubleshooting, allowing you to see if the internal element has melted without needing a multimeter for every check.

Key Features and Function:

  • High-Value Protection: Specifically rated at 3 Amps to match the safety requirements of most standard residential furnace and air handler control boards.

  • Fast-Acting Response: Engineered to trip immediately, shielding expensive system components from the heat generated by a low-voltage short.

  • Clear Diagnostic Window: The transparent plastic body allows for instant confirmation of a blown fuse during high-speed troubleshooting.

  • Industry Standard Fit: Universal ATO/ATC blade design ensures compatibility with nearly every major HVAC equipment brand.

Product Details and Key Specifications:

  • Manufacturer: Zebra Instruments

  • Part Type: Blade Type Automotive Fuse (ATO/ATC)

  • Quantity: 25-Pack (Bulk Contractor Bag)

  • Amperage: 3 Amp

  • Voltage Rating: Up to 32V (Ideal for 24VAC control systems)

  • Color-Code: Violet / Purple (Industry Standard for 3A)

  • Terminals: Zinc Alloy Blade

🛠️ HVAC Depot Pro Tip: The "Purple" Rule The 3-amp fuse is the standard for many boards, yet it is often replaced by mistake with a 5-amp (Tan) fuse. Never "up-size" the fuse to stop it from blowing. If a 3-amp fuse continues to pop, check the contactor coil for a short or look for a thermostat wire that has rubbed against the copper suction line. Using a higher-rated fuse can allow enough current to flow to melt the traces on your control board before the fuse actually blows.

Cross-Reference & Compatibility: These 3-Amp fuses are direct replacements for the following:

  • Littelfuse: 257003

  • Bussmann: ATC-3

  • Equipment Brands: Carrier, Bryant, Payne, Trane, American Standard, Lennox, Goodman, and Rheem/Ruud.

Extensive Model Compatibility List:

  • Universal Application: Fits any HVAC control board, zone controller, or low-voltage transformer circuit utilizing standard automotive blade fuses.

Specification

Refund policy

Refund & Return Policy

Last Updated: June 2026

At HVAC Parts & Equipment Depot, customer satisfaction is important to us. This Refund & Return Policy explains how returns, exchanges, and refunds are handled for purchases made through TopHVACParts.com.

Return Eligibility

We accept returns within 30 days of delivery.

To qualify for a return:

  • The item must be unused, uninstalled, and in its original condition.
  • The item must be returned in its original packaging.
  • Model numbers and serial numbers must match the original purchase records.
  • Proof of purchase or order confirmation is required.

Non-Returnable Items

The following items are not eligible for return or refund:

  • Installed or used parts.
  • Products showing signs of installation, modification, or damage caused after delivery.
  • Items missing original packaging.
  • Sale or clearance items.
  • Special-order or custom-order products.
  • Returns requested more than 30 days after delivery.

Restocking Fee

Approved returns may be subject to a 20% restocking fee.

The restocking fee will be deducted from the refund amount after the returned item has been inspected and approved.

Damaged, Defective, or Incorrect Items

If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery.

Email: support@tophvacparts.com
Phone: (214) 734-5222

We may request photographs and additional information to help process your claim.

If the claim is approved, we will provide a replacement, exchange, or refund at no additional cost to you.

Exchanges

We replace items only if they are defective, damaged upon arrival, or incorrectly shipped.

To request an exchange, contact us at:

support@tophvacparts.com

Refund Process

Once your return is received and inspected, we will notify you by email regarding approval or rejection of your refund request.

If approved:

  • Refunds will be issued to the original payment method.
  • Processing typically takes 7–14 business days after approval.
  • Your financial institution may require additional time before the refund appears in your account.

Return Shipping

Customers are responsible for return shipping costs unless the return is the result of:

  • Our shipping error,
  • A defective product,
  • A damaged product received upon delivery.

Original shipping charges are non-refundable.

We recommend using a trackable shipping service and purchasing shipping insurance for higher-value items.

Return Address

HVAC Parts & Equipment Depot
1135 E Plano Parkway, Suite 8
Plano, TX 75074
United States

Professional Installation Notice

Many HVAC products require installation by a licensed HVAC professional.

HVAC Parts & Equipment Depot is not responsible for damages resulting from improper installation, misuse, unauthorized modifications, or failure to follow manufacturer instructions.

Special Orders

Special-order products must be picked up within 30 days of purchase unless other arrangements have been approved.

Unclaimed special-order products may be returned to the manufacturer and may be subject to applicable restocking fees.

Contact Us

If you have questions regarding returns, refunds, or exchanges, please contact us:

HVAC Parts & Equipment Depot

Phone: (214) 734-5222
Email: support@tophvacparts.com

Michel & Siso are very knowledgeable and explain everything to where I could understand! Amazing experience! Thank you will always come here for any AC needs. Trustworthy and excellent customer service.

Celest G.
Verified Customer
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