Mersen ATM-15 Amp-Trap Midget ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$43.80
Mersen ATM-15 Amp-Trap Midget Fast-Acting Fuse, 600VAC/600VDC

Mersen ATM-15 Amp-Trap Midget Fast-Acting Fuse, 600VAC/600VDC

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Model: ATM1-1/2

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

$43.80
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Mersen ATM-15 Amp-Trap Midget Fast-Acting Fuse, 600VAC/600VDC

The Mersen ATM-15 Amp-Trap® is a midget fast-acting fuse family rated 600VAC and 600VDC with a 100kA interrupting rating, available across Motor FLA options from 0.75A to 15A to match a wide range of motor and circuit protection needs. This versatility lets the ATM series cover applications beyond what typical midget fuses can handle, including select 30/35, 30/40, and 30/50 ampere ratings built for capacitor protection duty cycles while remaining 30A dimensionally. Every fuse in the family shares ferrule-style terminals with tin-plated copper construction, clip mounting, and a GMG insulating body for dependable performance in both AC and DC power systems. Note: this fuse is not intended for Branch Circuit Protection.

Key Features

  • Motor FLA Range: Available in ratings from 0.75A to 15A to match specific motor and load protection requirements.
  • Voltage Rating: 600VAC / 600VDC rated for use in both AC and DC circuits.
  • Interrupting Rating: 100kA AC max interrupting/breaking capacity (I1) for reliable protection against high fault currents.
  • Fast-Acting Characteristic: Fast-acting speed for quick response to overcurrent conditions, well suited to capacitor protection duty cycles.
  • Ferrule Terminals: Ferrule connection/terminal type with clip mounting for straightforward installation into standard fuse holders.
  • Terminal Material: Tin-plated copper terminals for a durable, low-resistance connection.
  • Body/Insulating Material: GMG body construction for reliable insulation.
  • Frequency: Rated for 50/60 Hz systems.
  • Fuse Class: Midget class construction, with select 30/35, 30/40, and 30/50A ratings available for capacitor protection applications.

Certifications & Compliance

  • RoHS Compliant

Technical Specifications

  • AC Max I.R./Breaking Capacity: I1: 100 kA
  • ROHS Compliant: Yes
  • Rated voltage AC UL: 600 V
  • AC or DC: AC/DC
  • Rated voltage DC UL: 600 V
  • Body/Insulating Material: GMG

Typical Applications

  • Capacitor Bank Protection
  • AC and DC Power Distribution Circuits
  • Motor Control and Industrial Equipment Protection
  • Panelboard and Switchgear Fuse Protection
  • Applications Requiring High Inrush Current Withstand

Why Mersen?

Mersen's Amp-Trap® ATM midget fuse family combines a 100kA interrupting rating with 600VAC/600VDC versatility across a full range of Motor FLA options, giving electrical professionals a fast-acting fuse lineup that stands up to demanding duty cycles beyond typical midget fuse applications. With tin-plated copper ferrule terminals, GMG insulating body construction, and RoHS-compliant materials, the ATM series delivers dependable, code-conscious circuit protection for AC and DC power systems.

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:
100 kA
ROHS Compliant:
Yes
Frequency (Hz):
50/60 Hz
Rated voltage AC UL:
600 V
Speed/Characteristic:
Fast-Acting
AC or DC:
AC/DC
Rated voltage DC UL:
600 V
Fuse Class:
Midget
Body/Insulating Material:
GMG
list_batch:
MERSEN-20260825
Department:
Electrical
Product Group:
Circuit Protection
Product Type:
Fast-Acting Fuse
Voltage Rating:
600V AC/DC
Amperage Rating:
0.75A - 15A
Connection Type:
Ferrule
Product Finish:
Tin-Plated Copper
Product Material:
GMG
Standards:
RoHS Compliant
Product Subgroup:
Fuses

Mersen ATM1-1/2 – Frequently Asked Questions

1) Can the Mersen ATM Amp-Trap midget fuse be used for branch circuit protection?
No. The ATM Amp-Trap midget fuse is not intended for branch circuit protection. It is a supplementary midget-class fuse for control circuits, capacitor protection, motor control and equipment protection downstream of a branch circuit device. If you need branch circuit protection, you need a listed branch circuit fuse such as a Class CC type (the Littelfuse CCMR Series is a Class CC time-delay fuse).
2) Will the Mersen ATM fuse work on a DC circuit, like a battery or solar string?
Yes, it is rated 600VDC as well as 600VAC, so it is usable in both AC and DC power systems. On the AC side it is rated for 50/60 Hz systems. That dual AC/DC rating is the main reason it gets specified over glass-tube supplementary fuses, which are typically AC-only low-voltage parts.
3) What amp ratings does the Mersen ATM midget fuse come in?
The ATM family spans 0.75A up to 15A on the motor FLA selection, with 0.75A, 1-1/2A and 15A among the orderable ratings (part numbers ATM3/4, ATM1-1/2 and ATM15). Pick the rating against the load you are protecting, not the holder size, since all of these share the same midget body.
4) Will a Mersen ATM fuse drop into my existing fuse clips or holder?
The ATM uses ferrule terminals with clip mounting, so it seats in standard midget fuse holders and clip blocks rather than bolting down. Terminals are tin-plated copper for a low-resistance contact in the clips. Confirm your holder is a midget-class holder rated to at least 600V before using it at full voltage.
5) What is the closest midget fast-acting alternative to the Mersen ATM Amp-Trap fuse?
The Littelfuse BLF series is also a midget fast-acting fuse, so it shares the same body class and speed characteristic as the Mersen ATM. The difference is voltage: the BLF is a 250V fuse with a laminated tube body, while the ATM is rated 600VAC and 600VDC with a GMG insulating body. Use the BLF only where the circuit voltage is within 250V; for 600V AC or DC service the ATM is the one that carries the rating.
6) Should I use a Class CC time-delay fuse instead of the Mersen ATM for a motor circuit?
They do different jobs. The Mersen ATM is a fast-acting midget fuse, which clears overcurrents quickly and is suited to capacitor duty and control circuits. The Littelfuse CCMR040 is a Class CC time-delay fuse, and the time-delay curve is what rides through motor starting inrush without opening. If you are sizing to motor full-load amps and need branch circuit protection, the Class CC time-delay route is the correct one - the ATM is specifically not intended for branch circuit protection. For fast clearing in control and capacitor circuits, the ATM is the right characteristic.
7) Is a 100kA interrupting rating enough for an industrial panel?
The ATM carries a 100kA AC maximum interrupting rating, which covers available fault current on most industrial service and panelboard locations. For a short circuit current rating study, 100kA is the number to use for this fuse at 600V.
8) Fast-acting or time-delay fuse for a capacitor bank?
Fast-acting is what the ATM is, and it is specified for capacitor protection duty cycles, including select 30/35, 30/40 and 30/50 ampere ratings that stay 30A dimensionally. Time-delay is the opposite choice, used where motor inrush would nuisance-blow a fast fuse; for that duty look at a time-delay type such as the Littelfuse CCMR Series.
9) Can a Littelfuse AGU or AGA glass fuse replace a Mersen ATM midget fuse?
No. The Littelfuse AGA5 and the AGU series are glass tube fuses from the AG automotive and low-voltage family, built for very different circuits than a 600VAC/600VDC midget fuse with a 100kA interrupting rating. The Mersen ATM carries ferrule terminals on a GMG body for clip mounting in standard midget fuse holders. Glass AG fuses are not dimensional or electrical equivalents and should not be substituted into a midget holder.
10) For a 600V metering circuit, is the Square D PowerLogic fuse pack an alternative to the Mersen ATM?
The Square D PowerLogic energy meter fuse pack is a factory set of three 0.5A 600V fuses supplied for metering potential circuits, so it is the convenient choice when you are fusing a PowerLogic meter and want the matched set. The Mersen ATM is a general-purpose 600VAC/600VDC midget fast-acting fuse sold by individual Motor FLA rating from 0.75A up to 15A, with a 100kA interrupting rating. If you need a rating other than 0.5A, or you are protecting capacitor, DC, or control circuits rather than a meter, the ATM is the broader-range option.
11) Which midget fuse should I spec for a DC circuit?
The Mersen ATM Amp-Trap is rated for both AC and DC, at 600V AC and 600V DC, and is listed for 50/60 Hz AC systems as well, so one part covers both sides of a mixed AC/DC panel. Among the midget alternatives, the Littelfuse BLF is a 250V midget fast-acting fuse, which limits where it can be applied. For a 600V DC bus, the ATM is the fuse that carries the DC rating.
12) Is the Mersen ATM fuse RoHS compliant for a facility spec?
Yes, the ATM Amp-Trap midget fuse is RoHS compliant, with tin-plated copper terminals and a GMG insulating body. That covers the restricted-substance line item on most institutional and government submittals.
How fast can I get the Mersen ATM1-1/2 delivered?
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Does the Mersen ATM1-1/2 come with a warranty?
Absolutely. The Mersen ATM1-1/2 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 ATM1-1/2?
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