Mersen GPM-A1 Series Panel Mou...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$18.00
Mersen GPM-A1 Series Panel Mount Fuse Holder, Thermoplastic Polycarbonate

Mersen GPM-A1 Series Panel Mount Fuse Holder, Thermoplastic Polycarbonate

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Model: GPM-A1

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

$18.00
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Mersen GPM-A1 Series Panel Mount Fuse Holder, Thermoplastic Polycarbonate

The Mersen GPM-A1 Series Panel Mount Fuse Holder is engineered to accommodate 5x20mm, 1/4"x1-1/4", Class CC, and Midget (1-1/2"x13/32") fuses across a family of panel mount holders. Built with a Thermoplastic Polycarbonate body and Tin-plated Copper contacts, this holder is rated 250-600 VAC / 600 VDC with an Ampere Range of 15-30 A, giving specifiers a dependable, code-compliant fuse holding solution for control panels and equipment enclosures. UL Recognized and CSA Certified construction backs every unit for professional electrical applications.

Key Features

  • Fuse Compatibility: Accepts 5x20mm, 1/4"x1-1/4", Class CC, and Midget (1-1/2"x13/32") fuse sizes for flexible application coverage.
  • Durable Construction: Thermoplastic Polycarbonate body with glass-filled polyester insulators on 30A holders for extra dependability and trouble-free installation.
  • Materials Contact: Tin-plated Copper contacts for reliable, low-resistance connections.
  • Electrical Rating: 250-600 VAC AC voltage range and 600 VDC, with an Ampere Range of 15-30 A.
  • Flexible Mounting: Patented design allows the same body to accept a screw or bayonet knob; flange design permits front or rear mounting (10A and 15A holders are front mount only).
  • SCCR: Rated 100kA/200kA for short-circuit current withstand.
  • Poles: Single-pole (1) configuration.

Certifications & Compliance

  • UL Recognized Component to Standard 4248-1
  • CSA Certified, Class 6225 / Class 908501

Technical Specifications

  • Number of Poles: 1
  • Materials Contact: Tin-plated Copper
  • Body Material: Thermoplastic Polycarbonate
  • Mounting: Panel Mount
  • AC Voltage Range: 250 - 600 VAC
  • DC Voltage: 600 VDC
  • Ampere Range: 15 - 30 A
  • SCCR: 100kA/200kA

Typical Applications

  • Control Panel and Equipment Enclosure Wiring
  • Commercial and Industrial Electrical Installations
  • Circuit Protection for Class CC and Midget Fuses
  • OEM Panel-Mount Fuse Protection Assemblies
  • Front or Rear Panel Fuse Holder Retrofits

Why Mersen?

Mersen GPM-A1 Series fuse holders combine a Thermoplastic Polycarbonate body, Tin-plated Copper contacts, and glass-filled polyester insulators with UL Recognized and CSA Certified compliance for dependable, code-compliant performance. The patented screw/bayonet knob design and front-or-rear flange mounting make these holders a reliable choice for professional electrical panel work.

Manufacturer Resources

Mersen Product Catalog

Product Specs

list_batch:
MERSEN-20260825
Product Type:
Fuse Holder
Product Material:
Thermoplastic Polycarbonate
Voltage Rating:
250-600VAC
Amperage Rating:
15-30A
Listing:
UL Recognized
Standards:
CSA Certified
Department:
Electrical
Product Group:
Circuit Protection
Product Subgroup:
Fuse Holders & Blocks

Mersen GPM-A1 – Frequently Asked Questions

1) Will the Mersen GPM-A1 fuse holder take a Class CC fuse, or only midget fuses?
Both. The GPM-A1 family of panel mount holders accepts Class CC fuses, Midget (1-1/2" x 13/32"), 1/4" x 1-1/4", and 5x20mm fuses. So one holder family covers metric 5x20mm control fuses and North American midget and Class CC bodies. Match the fuse's amp rating to the holder you order within the 15-30A range.
2) Can I mount the Mersen GPM-A1 holder from behind the panel door?
Yes, on the holders this series covers at the higher amperages. The flange design permits front or rear mounting. The exception is the 10A and 15A holders, which are front mount only, so if you need rear mounting plan on a 20A or 30A holder.
3) I need a fuse holder for a wet outdoor run, not a panel door. Is the Mersen GPM-A1 the right choice?
No. The GPM-A1 is a panel mount holder meant for control panels and equipment enclosures, with nothing in its ratings covering wet-location use. For an exposed or wet run, the Littelfuse WPB1 Series in-line watertight fuse holder is the type built for that. If instead you are replacing a plug-fuse cover in an old residential panel, the Littelfuse LSRY Series plug fuse box cover unit at 125V 15A is the matching part.
4) Is the Littelfuse WPB1 in-line fuse holder an alternative to the Mersen GPM-A1 panel mount holder?
They mount in different places. The Mersen GPM-A1 is a panel mount fuse holder with a thermoplastic polycarbonate body, rated 250-600 VAC and 15-30 A, designed to drop through a panel cutout in a control cabinet or equipment enclosure. The Littelfuse WPB1 is an in-line watertight fuse holder, so it is spliced into a wire run rather than mounted through a panel face. If the drawing calls for a fuse accessible from the front or rear of an enclosure flange, the GPM-A1 is the form factor; if the fuse sits out in a harness exposed to moisture, the in-line WPB1 style is the one to look at.
5) What is the difference between the Mersen GPM-A1 fuse holder and the Littelfuse LSRY plug fuse box cover unit?
They serve different fuse types and voltage classes. The Mersen GPM-A1 accepts 5x20mm, 1/4 in x 1-1/4 in, Class CC and Midget (1-1/2 in x 13/32 in) cartridge fuses, is rated 250-600 VAC / 600 VDC at 15-30 A, and is UL Recognized and CSA Certified for control panel and enclosure work. The Littelfuse LSRY is a plug fuse box cover unit rated 125 V 15 A, which is screw-in plug fuse territory for a residential-style fuse box rather than a cartridge fuse in an industrial panel. For Class CC or Midget cartridge protection, the GPM-A1 is the holder family.
6) What is the short circuit current rating on the Mersen GPM-A1 holder?
The GPM-A1 panel mount holder is rated 100kA/200kA SCCR. That matters when you are documenting a panel's assembly SCCR on the nameplate, since the holder has to withstand the available fault current at its point in the circuit.
7) Is the Mersen GPM-A1 UL listed or only UL Recognized?
It is a UL Recognized Component to Standard 4248-1, not a standalone UL Listed device, and it is also CSA Certified under Class 6225 / Class 908501. Recognized components are evaluated for use inside a larger assembly, which is exactly how a panel mount holder gets used, so for control panel and enclosure builds that is the expected marking.
8) Do I have to choose between a screw cap and a bayonet knob when ordering the GPM-A1?
The body is the same either way. Mersen's patented design lets the same GPM-A1 body accept either a screw cap or a bayonet knob, so the knob style is a choice you make rather than a different holder casting. Bayonet is the quicker quarter-turn option for panels where fuses get pulled often.
9) I need a fused disconnect point in a wet outdoor junction run, not inside a cabinet. Is the Mersen GPM-A1 the right pick?
Not for an exposed wet run. The Mersen GPM-A1 is a panel mount holder intended for control panels and equipment enclosures, where the enclosure itself provides the environmental protection; its flange permits front or rear mounting through the panel. For a fuse that lives out in the wiring without a cabinet around it, a watertight in-line holder such as the Littelfuse WPB1 series is the matching form. Keep the GPM-A1 for the enclosure door or deadfront position.
10) Can the Mersen GPM-A1 replace a 125 V plug fuse cover unit on an older panel?
It is not a one-for-one swap. The Littelfuse LSRY series is a plug fuse box cover unit at 125 V 15 A, sized to the fuse box opening it covers and to screw-in plug fuses. The Mersen GPM-A1 is a single-pole cartridge fuse holder rated 250-600 VAC / 600 VDC at 15-30 A with tin-plated copper contacts, mounted through a panel cutout. Replacing plug fuse positions with GPM-A1 holders means a new cutout and a change to Class CC or Midget cartridge fuses, not a cover change.
11) Will a polycarbonate fuse holder body hold up in a hot industrial enclosure?
The GPM-A1 body is thermoplastic polycarbonate, and on the 30A holders the insulators are glass-filled polyester, which is the higher-temperature material in the assembly. Contacts are tin-plated copper for low resistance connections. For enclosures running hot or carrying sustained load near 30A, the 30A holder with polyester insulators is the one to spec.
12) What is the Mersen part number to order for the GPM-A1 panel mount fuse holder?
Order it as Mersen GPM-A1. That is the manufacturer part number for the panel mount holder with the polycarbonate body and tin-plated copper contacts, single pole, 15-30A.
How fast can I get the Mersen GPM-A1 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 GPM-A1 come with a warranty?
Absolutely. The Mersen GPM-A1 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 GPM-A1?
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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