Mersen ATQR Class CC Time-Dela...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$51.29
Mersen ATQR Class CC Time-Delay Fuse, 600VAC/300VDC Ferrule Terminal

Mersen ATQR Class CC Time-Delay Fuse, 600VAC/300VDC Ferrule Terminal

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Model: ATQR3

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

$51.29
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Mersen ATQR Class CC Time-Delay Fuse, 1.8A 600VAC/300VDC

The Mersen ATQR Class CC Time-Delay Fuse delivers precise circuit protection rated 1.8A at 600VAC/300VDC, part of the Amp-Trap 2000 series. Built with a GMG insulating body and tin-plated copper ferrule terminals, this fuse combines a time-delay characteristic for motor and inductive load protection with a 200 kA breaking capacity for high-energy fault interruption. RoHS compliant construction supports professional electrical installations requiring dependable, code-ready overcurrent protection.

Key Features

  • Ampere Rating: 1.8A rating provides precise overcurrent protection for sensitive circuits and equipment applications.
  • Class CC Design: Current-limiting performance with a rejection feature that prevents installation of non-current-limiting fuses.
  • Time-Delay Characteristic: Allows temporary overloads while providing fast response to short circuits and fault conditions.
  • 200 kA Breaking Capacity: Delivers exceptional fault current interruption capability for high-energy electrical systems.
  • Dual Voltage Rating: Rated for both 600VAC and 300VDC applications, supporting versatile installation flexibility.
  • Ferrule Terminal Design: Tin-plated copper terminals provide a secure, reliable electrical connection.
  • GMG Body Insulating Material: Durable insulating body construction supports dependable performance in demanding applications.
  • Clip Mounting: Designed for clip-mount installation, rated for 50/60 Hz operation.

Certifications & Compliance

  • RoHS Compliant

Technical Specifications

  • Body Insulating Material: GMG
  • Rohs Compliant: Yes
  • Ac Max I R Breaking Capacity I1: 200 kA
  • Ac Or Dc: AC/DC
  • Ampere Rating: 1.8 A
  • Connection Terminal Material: Tin-Plated Copper
  • Connection Terminal Type: Ferrule
  • Frequency Hz : 50/60 Hz
  • Fuse Class: Class CC
  • Mounting Method: Clip
  • Product Length: 1.5 in
  • Product Weight: 0.017 lb
  • Rated Voltage Ac Ul: 600 V
  • Rated Voltage Dc Ul: 300 V
  • Speed Characteristic: Time Delay

Typical Applications

  • Motor Control Centers and Variable Frequency Drives
  • Industrial Control Panels and Automation Systems
  • Commercial HVAC and Lighting Control Systems
  • Process Control and Instrumentation Circuits
  • Power Distribution and Switchgear Applications
  • Electronic Equipment and Sensitive Load Protection
  • Renewable Energy and Battery Storage Systems

Why Mersen?

Mersen ATQR fuses deliver professional-grade circuit protection through the proven Amp-Trap 2000 series, backed by RoHS compliant construction and a 200 kA breaking capacity for demanding electrical environments. The compact 1.5 in length and lightweight 0.017 lb design simplify installation, while the GMG insulating body and tin-plated copper ferrule terminals ensure dependable, code-compliant performance for professional electrical work.

Manufacturer Resources

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/DC
Ac Max I R Breaking Capacity I1:
200 kA
Rated Voltage Dc Ul:
300 V
Fuse Class:
Class CC
Speed Characteristic:
Time Delay
Product Weight:
0.017 lb
Rated Voltage Ac Ul:
600 V
Connection Terminal Type:
Ferrule
Department:
Electrical
Product Length:
1.5 in
Mounting Method:
Clip
Product Type:
Fuse

Mersen ATQR3 – Frequently Asked Questions

1) Will a Mersen ATQR fit a standard Class CC fuse holder?
Yes. The ATQR is a Class CC fuse with ferrule terminals and clip mounting, so it drops into any Class CC rejection holder or fuse block. Class CC bodies carry a rejection feature so a non-current-limiting fuse cannot be installed in the same holder. Body length is 1.5 inches.
2) Time-delay or fast-acting Class CC fuse for a motor starter?
For a motor starter, transformer primary, or any load with inrush, the time-delay version is the one you want. The ATQR carries a time-delay characteristic, so it rides through the temporary overload of motor starting and transformer magnetizing inrush while still clearing a short circuit fast. A fast-acting Class CC fuse would nuisance-open on that same inrush. Where the load is a semiconductor or a purely resistive circuit with no inrush, a fast-acting Class CC is the better fit.
3) Can a Square D PowerLogic energy meter fuse pack be used in place of a Mersen ATQR fuse?
No - they solve different problems. The Square D EMFP3 is a PowerLogic energy meter fuse pack sold as a set of three, intended for the metering circuit of a PowerLogic energy meter. The Mersen ATQR is a Class CC time-delay fuse rated 600VAC and 300VDC with a 200 kA AC breaking capacity, sold as individual fuses across amperages from 0.1A to 30A, and it carries the Class CC rejection feature so it seats only in a Class CC clip. If a panel calls for a Class CC time-delay fuse on a motor or control circuit, the ATQR is the part; the meter fuse pack is a metering accessory and does not carry the Class CC designation.
4) What amp ratings does the Mersen ATQR come in?
The ATQR runs from 1/10 amp up to 30 amps, which is the full Class CC range. The ladder is 0.1, 0.25, 0.3, 0.5, 0.6, 0.75, 0.8, 1, 1.25, 1.5, 1.6, 1.8, 2, 2.5, 3, 3.2, 3.5, 4, 5, 6, 7, 8, 10, 12, 15, 20, 25 and 30 amps. Part numbers follow the rating: ATQR10 is the 10 amp, ATQR1-1/2 is the 1.5 amp, ATQR6/10 is the 6/10 (0.6) amp. Fractional ratings below 1 amp use a slash, and mixed ratings above 1 use a dash.
5) How do I read a Mersen ATQR part number so I order the right amperage?
The number after ATQR is the ampere rating. Whole numbers are straight amps, so ATQR15 is 15 amps. A slash is a fraction under one amp: ATQR3/10 is 0.3 amp, ATQR3/4 is 0.75 amp. A dash separates the whole number from the fraction: ATQR1-8/10 is 1.8 amps, ATQR2-1/2 is 2.5 amps, ATQR3-2/10 is 3.2 amps. Every rating shares the same 1.5 inch Class CC body, so amperage is the only thing you pick.
6) Is a 200 kA interrupting rating enough for my panel's available fault current?
200 kA AC is the top of what fuses are built to, and it exceeds the available fault current at essentially any commercial or industrial service point. The ATQR is also current-limiting as a Class CC device, so it cuts the let-through energy well below the prospective fault, which is what lets downstream control components stay within their withstand rating.
7) Can I use a Class CC fuse where a midget fuse is installed, or the other way around?
Physically both are 13/32 by 1-1/2 inch bodies and an ATQR at 1.5 inches long will sit in a midget clip, but the reverse is not true: a Class CC holder has a rejection feature that blocks a plain midget fuse from seating. If the panel drawing calls for Class CC, install Class CC. Replacing a Class CC with a midget defeats the rejection scheme the panel was built around.
8) How many ATQR fuses do I need for a three-phase circuit?
One fuse per ungrounded conductor, so a three-phase circuit takes three of the same amp rating and a single-phase 240V circuit takes two. Each ATQR is a single fuse, so order by the count of poles. If you are fusing a metering or energy monitoring circuit and want a matched set already grouped, the Square D PowerLogic Energy Meter Fuse Pack ships as a set of three rated 0.5A at 600V.
9) I need a 0.5A 600V fuse - is the Square D EMFP3 or the Mersen ATQR the right one?
Both cover 0.5A at 600V, but they are built for different duty. The Square D EMFP3 is a PowerLogic energy meter fuse pack supplied as a set of three, matched to the voltage-sensing leads of a PowerLogic meter. The Mersen ATQR1/2 is a single 0.5A Class CC time-delay fuse rated 600VAC and 300VDC, 1.5 in long, with tin-plated copper ferrule terminals for clip mounting. For a Class CC fuse holder or block on a control panel, order the ATQR1/2; for the metering leads on a PowerLogic meter, the three-fuse pack is what matches that assembly.
10) Will the ATQR hold up in a hot control panel, and what is the body made of?
The ATQR uses a GMG insulating body with tin-plated copper ferrule terminals. Tin plating on the ferrules resists the oxidation that causes resistance and heating at the clip contact over time, which matters in a densely packed control cabinet or motor control center where a poor contact shows up as a hot fuse holder.
11) Does the Mersen ATQR meet RoHS for a panel shipping into Europe?
RoHS compliant, yes. The ATQR is built to RoHS, which covers the restricted-substance requirement for control panels and equipment destined for markets that enforce it.
How fast can I get the Mersen ATQR3 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 ATQR3 come with a warranty?
Absolutely. The Mersen ATQR3 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 ATQR3?
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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