Mersen ATQ Midget Time-Delay F...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$48.27
Mersen ATQ Midget Time-Delay Fuse, 500VAC Ferrule Terminal

Mersen ATQ Midget Time-Delay Fuse, 500VAC Ferrule Terminal

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Model: ATQ15

In Stock (leaves warehouse same day if ordered before 3pm ET)

$48.27
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Mersen ATQ8 Midget Time-Delay Fuse, 8A 500VAC

The Mersen ATQ8 Midget Time-Delay Fuse delivers reliable overcurrent protection with an 8A current rating and 500VAC voltage rating for commercial and industrial systems. Built in the compact 1.5-inch Midget class with ferrule terminals, this fuse uses tin-plated copper terminal construction and GMG body insulating material for dependable, corrosion-resistant performance. Its time-delay characteristic allows temporary overloads to pass while clearing true fault conditions quickly, and it is RoHS compliant for safe installation.

Key Features

  • 8A Current Rating: Delivers precise overcurrent protection for medium-load circuits and equipment protection applications.
  • 500VAC Voltage Rating: Suitable for standard commercial and industrial voltage systems with reliable arc interruption capability.
  • Time-Delay Characteristic: Allows temporary overloads while providing fast fault clearing, reducing nuisance tripping in motor and inductive load applications.
  • 10 kA Breaking Capacity: Delivers robust fault current interruption capability for enhanced system protection and safety.
  • Ferrule Terminal Design: Tin-Plated Copper terminals ensure secure electrical connections with corrosion resistance and reliable contact.
  • Durable Construction: GMG body insulating material supports dependable performance in demanding electrical environments.
  • Midget Class Construction: Compact 1.5 in length design optimizes space utilization in electrical panels and equipment, mounted via Clip.

Certifications & Compliance

  • RoHS Compliant

Technical Specifications

  • Ac Or Dc: AC
  • Body Insulating Material: GMG
  • Rohs Compliant: Yes
  • Ampere Rating: 8A
  • Rated Voltage Ac Ul: 500 V
  • Fuse Class: Midget
  • Connection Terminal Type: Ferrule
  • Connection Terminal Material: Tin-Plated Copper
  • Ac Max I R Breaking Capacity I1: 10 kA
  • Frequency Hz: 50/60 Hz
  • Mounting Method: Clip
  • Product Length: 1.5 in
  • Product Weight: 0.014 lb
  • Speed Characteristic: Time Delay

Typical Applications

  • Motor Control Centers and Starter Protection
  • Industrial Equipment and Machinery Protection
  • Commercial HVAC System Protection
  • Lighting Circuit Protection
  • Control Panel and Instrumentation Applications
  • Power Distribution Equipment

Why Mersen?

Mersen delivers proven reliability in circuit protection with RoHS compliant construction and professional-grade materials. The tin-plated copper ferrule terminals and GMG insulating material of the ATQ8 support long-term performance and dependable, code-compliant circuit protection in demanding electrical environments.

Manufacturer Resources

Mersen Product Catalog

Product Specs

Connection Terminal Material:
Tin-Plated Copper
Product Group:
Wiring Devices
Body Insulating Material:
GMG
Frequency Hz:
50/60 Hz
Ac Or Dc:
AC
Ac Max I R Breaking Capacity I1:
10 kA
Fuse Class:
Midget
Speed Characteristic:
Time Delay
Product Weight:
0.014 lb
Rated Voltage Ac Ul:
500 V
Connection Terminal Type:
Ferrule
Department:
Electrical
Product Length:
1.5 in
Mounting Method:
Clip
Product Type:
Fuse

Mersen ATQ15 – Frequently Asked Questions

1) Will a Mersen ATQ midget fuse fit my existing 13/32 x 1-1/2 inch fuse clips?
The ATQ is a Midget class fuse with ferrule ends and a 1.5 inch body length, so it drops into standard midget fuse clips and clip-style holders. It is clip mounted, not bolt-on, so there is nothing to torque down. If your holder is sized for a 1-1/2 inch midget, the ATQ seats the same way the fuse you are pulling out did.
2) Which amp rating of the Mersen ATQ do I order?
The ATQ runs from 0.5A up through 30A: 0.5, 1, 1.25, 1.5, 2, 3, 3.5, 4, 5, 6, 8, 10, 15, 20, 25 and 30 amps. The part number is the series plus the rating, so 8 amps is ATQ8 and 30 amps is ATQ30. Fractional ratings carry the fraction in the number, like ATQ1-1/2 for 1.5A and ATQ3-1/2 for 3.5A. Match the rating to what the equipment nameplate or the panel schedule calls for, not to the fuse you found loose in the drawer.
3) Why does my midget fuse keep blowing on motor startup, and will a time-delay fuse fix it?
Inrush is the usual culprit. A motor or transformer pulls several times running current for a fraction of a second at start, and a fast-acting fuse reads that as a fault. The ATQ has a time-delay characteristic, meaning it rides through that temporary overload and still opens quickly on a real short. That is why it belongs in motor starters, HVAC control circuits and control panels with inductive loads. If the circuit is feeding electronics or a semiconductor that needs to open fast, a time-delay fuse is the wrong choice.
4) Can a Square D PowerLogic energy meter fuse pack be used in place of a Mersen ATQ midget fuse?
No - they are built for different jobs. The Square D EMFP3 is a PowerLogic energy meter fuse pack sold as a set of three at 0.5A 600V, intended to fuse the voltage-sensing leads of a PowerLogic meter. The Mersen ATQ is a Midget class time-delay fuse rated 500VAC with a 10 kA interrupting rating, sold in amperages from 0.5A up to 30A, and it mounts in clips as branch and equipment protection for motor circuits, HVAC, control panels and lighting. If the fuse being replaced sits in a metering circuit on a PowerLogic meter, the meter fuse pack is the matching part; if it sits in a 1.5 in midget clip in a panel or starter, the ATQ is the one to order.
5) Is the Mersen ATQ a dual-element time-delay fuse or a fast-acting midget?
Time delay. Within the midget class you generally choose between a fast-acting fuse for resistive and electronic loads and a time-delay fuse for anything with inrush. The ATQ is the time-delay one. Swapping a fast-acting midget for an ATQ of the same amp rating changes the clearing behavior, so do it deliberately, not just because the physical size matches.
6) Is a Mersen ATQ the right replacement for the fuses in a Square D PowerLogic energy meter?
Not a match. The Square D PowerLogic Energy Meter Fuse Pack is a 0.5A 600V set of three sold specifically for metering potential circuits, and its 600V rating is above what the ATQ carries at 500VAC. For a PowerLogic meter, order the PowerLogic fuse pack. Keep the ATQ for 500V and below control and motor circuits where the time-delay characteristic matters.
7) I need a 0.5A fuse for a metering circuit - is the Mersen ATQ1/2 the right choice or do I need the Square D part?
Both exist at 0.5A, but they are not the same component. The Mersen ATQ1/2 is a 0.5A Midget class time-delay fuse with ferrule terminals rated 500VAC and it drops into standard 1.5 in midget fuse clips. The Square D EMFP3 is a 0.5A 600V PowerLogic energy meter fuse pack supplied as a set of three, matched to a PowerLogic meter installation. Match the part to the holder and the equipment: a midget clip in a panel or control enclosure takes the ATQ1/2, while a PowerLogic meter's supplied fuse positions take the Square D set.
8) Will the ferrule ends corrode in a humid mechanical room or a rooftop unit?
The ferrules are tin-plated copper, which resists corrosion and keeps contact resistance down in the clips over time. The body is GMG insulating material. A loose or oxidized clip is the more common cause of a hot fuse than the fuse itself, so if you are seeing discoloration on replacement, check the clip tension too.
9) Can I stock Mersen ATQ fuses across an entire facility's control panels?
That is what the range is for. One fuse type, ferrule ends, 1.5 inch midget body, 500VAC, 10 kA, in sixteen ratings from 0.5A to 30A means a single clip style and one part family covers control circuits, lighting circuits, HVAC starters and instrumentation across a building. Each fuse weighs 0.014 lb, so a full rating spread takes almost no shelf. Stock the ratings your panel schedules actually call out rather than the whole range.
How fast can I get the Mersen ATQ15 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Mersen ATQ15 come with a warranty?
Absolutely. The Mersen ATQ15 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Mersen ATQ15?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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