Esp ATM-3 Mini Blade Fuse 3 Amp Pack of 25

Product Description

The ESP ATM-3 is a fast-acting ATM mini blade fuse rated at 3 amps, sold in a pack of 25. It is designed to protect electrical and electronic circuitry on HVAC control boards and similar low-voltage circuit assemblies from overcurrent and overheating conditions. The enclosed fuse element provides electrical isolation and corrosion resistance, contributing to longer service life compared to open-element designs. The purple color coding identifies the 3-amp rating at a glance, reducing identification errors during service calls. Licensed HVAC technicians and controls specialists are the primary installers.

These mini blade fuses are commonly used as replacement protection devices on residential and light commercial HVAC control boards, including those found in gas furnaces, air handlers, and heat pumps. The ATM miniature form factor fits standard mini blade fuse holders and fuse clips found on Rheem and Ruud control boards, as well as other OEM boards that use the ATM blade fuse footprint. The pack-of-25 quantity suits service vans and shop stock for technicians who replace fuses routinely during maintenance and diagnostic calls.

Key Features

• Fast-acting ATM mini blade fuse construction for quick overcurrent response
• Rated at 3 amps for low-current circuit protection
• Purple color coding identifies ampere rating at a glance per ATM color standard
• Enclosed element provides electrical isolation and corrosion resistance
• Miniature blade form factor fits standard mini blade fuse holders
• Pack of 25 supports bulk stocking for service fleets

Compatibility

Suitable for use on Rheem and Ruud control boards that accept ATM mini blade fuses, as well as other residential and commercial HVAC control boards using the ATM mini blade fuse footprint.

Installation Notes

Always shut down power to the HVAC unit at the disconnect and confirm zero voltage with a meter before replacing fuses on a control board. A blown fuse is a symptom, not a root cause — diagnose and correct any underlying short or overcurrent condition before installing a replacement. Use the correct amp-rated fuse only; substituting a higher-rated fuse can damage the board or create a fire hazard. This work is typically performed by a licensed HVAC technician.

Technical Specifications

• Amperage: 3 amps
• Fuse Type: ATM Fast-Acting Mini Blade
• Color Code: Purple
• Material: Plastic
• Quantity: 25 per pack

Standard Information

• Brand: ESP
• Manufacturer Part Number: ATM-3