Mersen ATDR Class CC Time-Dela...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$55.14
Mersen ATDR Class CC Time-Delay Fuse, Amp-Trap 2000, Ferrule Terminal, 600VAC/300VDC

Mersen ATDR Class CC Time-Delay Fuse, Amp-Trap 2000, Ferrule Terminal, 600VAC/300VDC

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Model: ATDR6-1/4

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

$55.14
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Mersen ATDR Class CC Time-Delay Fuse, Amp-Trap 2000, Ferrule Terminal, 600VAC/300VDC

The Mersen Amp-Trap 2000® ATDR is a Class CC time-delay fuse with a ferrule terminal, engineered to deliver IEC Type 2 "no damage" protection for sensitive branch circuit components and small motors. This family is offered across Motor FLA ratings from 0.8A to 7.5A (9 selectable options), so you can match the exact protection level required for your motor branch circuit while every option shares the same rugged construction and performance envelope. Rated 600VAC / 300VDC with a 200 kA AC breaking capacity, the ATDR combines excellent time-delay characteristics with strong cycling ability across the entire amp range, minimizing the risk of fault-related equipment damage on both AC and DC circuits.

Key Features

  • Motor FLA Range: Available across 9 selectable ratings from 0.8A to 7.5A to match your specific small-motor or branch-circuit load.
  • Connection/Terminal Type: Ferrule terminals mounted via clip for reliable panel installation.
  • Durable Construction: Body/insulating material of GMG with tin-plated copper connection/terminal material for long-term conductivity and corrosion resistance.
  • Time-Delay Characteristic: Class CC time-delay (speed/characteristic) design provides excellent cycling ability for small motor loads while avoiding nuisance opening across every amp rating in the family.
  • Dual AC/DC Rating: Rated voltage of 600V AC UL and 300V DC UL, suitable for both AC and DC circuit applications, consistent across all Motor FLA options.
  • High Interrupting Capacity: AC max I.R./breaking capacity (I1) of 200 kA for dependable performance under fault conditions.
  • Frequency Rating: Rated for 50/60 Hz supply systems.
  • Fuse Class: Class CC form factor for compatibility with Class CC fuse holders and disconnects.
  • Packaging: Supplied 10 EA per package for convenient stocking and replacement.

Technical Specifications

  • Motor FLA Options: 0.8A, 1.6A, 2.25A, 2.8A, 3.2A, 3.5A, 4.5A, 6.25A, 7.5A
  • Body/Insulating Material: GMG
  • Connection/Terminal Type: Ferrule
  • Mounting: Clip
  • Connection/Terminal Material: Tin-Plated Copper
  • AC Max I.R./Breaking Capacity (I1): 200 kA
  • Frequency: 50/60 Hz
  • Rated Voltage AC UL: 600 V
  • Rated Voltage DC UL: 300 V
  • Speed/Characteristic: Time Delay
  • AC or DC: AC/DC
  • Fuse Class: Class CC
  • Packaging: 10 EA

Typical Applications

  • Branch Circuit Protection for Sensitive Electronic Components
  • Small Motor Overcurrent and Fault Protection
  • Commercial and Industrial Electrical Panels
  • OEM Equipment and Control Panel Circuit Protection
  • AC and DC Power Distribution Systems

Why Mersen?

Mersen's Amp-Trap 2000 ATDR fuse family is built with a GMG insulating body and tin-plated copper terminals for durable, corrosion-resistant performance in demanding electrical environments, no matter which Motor FLA rating you select. Its IEC Type 2 "no damage" design and 200 kA breaking capacity give facility engineers confidence that sensitive branch circuit components and small motors stay protected against fault conditions, while the Class CC time-delay characteristic supports reliable, code-compliant performance for professional electrical installations across the full 0.8A to 7.5A range.

Manufacturer Resources

Mersen Product Catalog

Product Specs

Connection Terminal Type:
Ferrule
Mounting Method:
Clip
Connection/Terminal Material:
Tin-Plated Copper
AC Max I.R./Breaking Capacity: I1:
200 kA
Frequency (Hz):
50/60 Hz
Rated voltage AC UL:
600 V
Speed/Characteristic:
Time Delay
AC or DC:
AC/DC
Rated voltage DC UL:
300 V
Fuse Class:
Class CC
Body/Insulating Material:
GMG
list_batch:
MERSEN-20260825
Product Type:
Time-Delay Fuse
Department:
Electrical
Product Group:
Circuit Protection
Product Material:
GMG
Connection Type:
Ferrule
Voltage Rating:
600VAC/300VDC
Amperage Rating:
0.8A - 7.5A
Product Finish:
Tin-Plated Copper
Configuration:
Class CC Time-Delay
Product Subgroup:
Fuses

Mersen ATDR6-1/4 – Frequently Asked Questions

1) Will the Mersen ATDR fuse fit a standard Class CC fuse holder?
Yes. The ATDR is a Class CC fuse with ferrule terminals and clip mounting, so it drops into any Class CC rated fuse holder or disconnect block. Class CC is a rejection-style format, so it will not seat in a holder built for midget (non-rejection) fuses.
2) Can I use the Mersen ATDR on a DC circuit as well as AC?
Yes, it is rated for both: 600V AC UL and 300V DC UL. Use it up to 600V on AC branch circuits and up to 300V on DC power distribution. AC frequency rating is 50/60 Hz.
3) Which Mersen ATDR amp rating do I order for a small motor?
The ATDR family runs from 0.8A to 7.5A across nine ratings: 0.8, 1.6, 2.25, 2.8, 3.2, 3.5, 4.5, 6.25 and 7.5 amps. Match the rating to the motor full load amps on the nameplate. The part numbers follow the amp value, for example ATDR8/10 for 0.8A, ATDR2-1/4 for 2.25A, and ATDR7-1/2 for 7.5A.
4) Will a time-delay Class CC fuse nuisance-trip on motor inrush?
No, that is the point of the time-delay characteristic. The ATDR is built to ride through the starting surge of a small motor while still clearing a fault, and it gives IEC Type 2 no-damage protection for the branch circuit components downstream. A fast-acting midget fuse like the Littelfuse BLF Series will open on the same inrush, so use fast-acting only where the load has no starting surge.
5) I need more than 7.5A in a Class CC time-delay fuse, what do I use?
The Mersen ATDR line tops out at 7.5A. For a larger Class CC time-delay application, the Littelfuse CCMR Series covers it, for example the CCMR040 at 40A. It is the same Class CC footprint, so the same style of holder applies.
6) What is the closest cross-brand equivalent to a Mersen ATDR Class CC time-delay fuse?
The Littelfuse CCMR series is the closest counterpart - it is also a Class CC time-delay fuse. The Mersen ATDR is a Class CC time-delay fuse rated 600VAC/300VDC with ferrule terminals, covering motor FLA ratings from 0.8A to 7.5A. The Littelfuse CCMR040 is the 40A rating in that series, so it sits well above the ATDR amp range covered here; match on Class CC time-delay characteristic first, then pick the amp rating your motor FLA calls for.
7) I need a Class CC time-delay fuse above 7.5A for a larger motor - what do I use instead?
The Mersen ATDR covers motor FLA ratings of 0.8A through 7.5A, so a larger motor branch circuit falls outside it. The Littelfuse CCMR040 is a Class CC time-delay fuse rated 40A and keeps the same fuse class, so it drops into the same Class CC holder or disconnect while carrying the higher load.
8) Can I use a Littelfuse BLF midget fuse in place of a Mersen ATDR?
No. The Littelfuse BLF is a midget fast-acting fuse rated 250V, while the Mersen ATDR is a Class CC time-delay fuse rated 600V AC UL and 300V DC UL. The time-delay characteristic is what lets the ATDR ride through motor inrush without nuisance opening, and a fast-acting fuse will not do that. The voltage ratings differ as well, so the two are not interchangeable on a 600V branch circuit.
9) Is 200 kA interrupting rating enough for my service?
The ATDR has a 200 kA AC interrupting rating, which covers essentially any available fault current you will see on a commercial or industrial branch circuit. That high interrupting capacity is also what lets it be used in series-rated and Type 2 coordinated motor circuits where equipment downstream must survive a bolted fault.
10) Is a Littelfuse AGA or AGU glass fuse a substitute for the Mersen ATDR?
They are different animals. The Littelfuse AGA5 is a 5A glass fuse and the AGU is a glass tube fuse - automotive and low-voltage style cartridges, not Class CC branch circuit protection. The Mersen ATDR is a Class CC fuse with ferrule terminals and clip mounting, rated 600VAC/300VDC with a 200 kA AC breaking capacity, and it is the one specified for motor branch circuits and panel work. A glass fuse will not seat in a Class CC holder.
11) My metering panel calls for a 0.5A 600V fuse set - is the Mersen ATDR the right part?
For a PowerLogic energy meter, the Square D PowerLogic Energy Meter Fuse Pack is the purpose-built option, supplied as a set of three rated 0.5A 600V for metering inputs. The Mersen ATDR is a Class CC time-delay fuse sized by motor FLA from 0.8A up to 7.5A and intended for motor and branch circuit protection, so it does not cover a 0.5A metering application.
12) I need DC circuit protection - does the Littelfuse CCMR work the same as the Mersen ATDR?
The Mersen ATDR carries a dual AC/DC rating of 600V AC UL and 300V DC UL, so it is specified for both AC and DC distribution. The Littelfuse CCMR040 is a Class CC time-delay fuse in the same class and holder footprint; confirm its DC rating against your circuit before substituting, since the ATDR is the one carrying the published 300V DC UL figure.
13) What are the Mersen ATDR terminals and body made of?
Terminals are tin-plated copper and the body is GMG insulating material. Tin plating resists corrosion in damp or industrial panels and keeps clip contact resistance low over repeated fuse changes, which matters in a control panel that gets serviced regularly.
14) How is the Mersen ATDR fuse packaged for stocking spares?
ATDR fuses are supplied 10 each per package, which suits MRO shelf stock where you want a few spares of each motor rating on hand for a panel.
How fast can I get the Mersen ATDR6-1/4 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 ATDR6-1/4 come with a warranty?
Absolutely. The Mersen ATDR6-1/4 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 ATDR6-1/4?
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