Mersen 30351 Class CC Midget F...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4.52
Mersen 30351 Class CC Midget Fuse Block, Copper Box Connector

Mersen 30351 Class CC Midget Fuse Block, Copper Box Connector

(No reviews yet) Write a Review

Model: 30351

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

$4.52
Adding to cart… The item has been added
Free Shipping on orders over $199.99
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Mersen 30351 Class CC Midget Fuse Block, Copper Box Connector

The Mersen Class CC Midget Fuse Block is built to accommodate all 30A, 1-1/2" x 13/32" midget fuses as well as all 30A Class CC fuses, making it a versatile choice for panel and control-circuit fusing. This copper box connector version fits a wide range of stranded or solid copper wire, and the block is rated 30A at 600VAC/600VDC at 50/60Hz for AC or DC applications. This fuse block is available in 1-, 2-, and 3-pole configurations, and a unique adder block snaps onto any of these base blocks to build segmented multi-pole assemblies of as many poles as a job requires. A glass-filled polycarbonate (GFPC) insulator with verified dielectric strength in excess of 2500V provides reliable electrical isolation, and the design is RoHS compliant for use in modern electrical assemblies.

Key Features

  • Fuse Compatibility: Accommodates all 30A, 1-1/2" x 13/32" midget fuses and all 30A Class CC fuses for flexible fuse selection.
  • Copper Box Connector: Box-style connector accepts a wide range of stranded or solid copper wire for secure termination.
  • Insulator Material: Glass-filled polycarbonate (GFPC) housing with verified dielectric strength in excess of 2500V.
  • Modular Multi-Pole Design: Available in 1-, 2-, and 3-pole base blocks, with a unique adder block that snaps on to build segmented multi-pole assemblies of as many poles as needed.
  • High-Conductivity Fuse Clips: All fuse clips are made of high conductivity, tin-plated copper alloy for dependable contact.
  • Electrical Rating: Rated 30A at 600VAC/600VDC, 50/60Hz, suitable for AC or DC circuits.
  • Installation: Clip-in fuse installation method for quick, tool-free fuse changes.

Certifications & Compliance

  • RoHS Compliant

Technical Specifications

  • ROHS Compliant: Yes
  • Max Fuse Rating: 30 A
  • Ampere Rating: 30 A
  • Frequency: 50/60 Hz
  • AC or DC: AC/DC
  • Fuse Installation Method: Clip-in
  • Body/Insulating Material: Glass Filled Polycarbonate
  • Packaging: 10 EA
  • Poles Available: 1, 2, or 3

Typical Applications

  • Industrial and Commercial Power Distribution Panels
  • Motor Control Centers and Control Panels
  • OEM Electrical Equipment and Machine Building
  • Panelboard and Load Center Fuse Holders
  • Multi-Pole Segmented Fuse Block Assemblies

Why Mersen?

Mersen fuse blocks pair a glass-filled polycarbonate insulator rated well above 2500V with high-conductivity, tin-plated copper alloy fuse clips, delivering dependable, code-compliant circuit protection for demanding electrical work. The modular adder-block design lets installers build exactly the pole configuration a job requires, from 1-pole up through 3-pole assemblies, while RoHS compliance supports use in current electrical assemblies. Choose Mersen for fuse blocks engineered for consistent performance in professional power distribution applications.

Manufacturer Resources

Mersen Product Catalog

Product Specs

Max Fuse Rating:
30 A
Ampere Rating:
30 A
ROHS Compliant:
Yes
Frequency (Hz):
50/60 Hz
AC or DC:
AC/DC
Fuse Installation Method:
Clip-in
Body/Insulating Material:
Glass Filled Polycarbonate
list_batch:
MERSEN-20260825
Product Type:
Fuse Block
Department:
Electrical
Product Group:
Circuit Protection
Product Material:
Glass Filled Polycarbonate
Amperage Rating:
30A
Voltage Rating:
600V
Configuration:
1-3 Poles
Listing:
RoHS Compliant
Product Subgroup:
Fuse Holders & Blocks

Mersen 30351 – Frequently Asked Questions

1) Will the Mersen 30351 fuse block take standard 13/32 inch midget fuses, or only Class CC?
Both. The Mersen Class CC midget fuse block accepts all 30A, 1-1/2 inch x 13/32 inch midget fuses as well as all 30A Class CC fuses, so a non-rejection midget and a Class CC fuse both clip into the same block. Fuses clip in, so changes are tool-free.
2) Can I use this Mersen midget fuse block on a 600V DC circuit?
Yes. The block is rated 30A at 600VAC and 600VDC, 50/60 Hz, so it works in either AC or DC circuits up to 600V. Don't exceed the 30A maximum fuse rating.
3) I need 5 poles of Class CC fusing in one panel. Can I get there with the Mersen 30351 family?
Yes. Base blocks come in 1-pole (30351), 2-pole (30352) and 3-pole (20358R), and an adder block snaps onto any of those bases to build segmented multi-pole assemblies with as many poles as the job needs. For five poles you'd start from a 3-pole base and add on, or combine a 3-pole and a 2-pole.
4) My drawing calls for a Class R fuse block at 600V 30A - can I use the Mersen 30351 instead?
No. The Mersen 30351 accepts 30A Class CC and 1-1/2 inch x 13/32 inch midget fuses only, and the clips will not take a Class R fuse body. For that spec, the Littelfuse LFR60030-3CID is a Class R fuse block rated 600V 30A. Both land at the same 600V, 30A electrical rating, but the fuse class is a physical dimension difference, not a preference - order to the class your overcurrent device uses.
5) What should I use instead of the Mersen 30351 for a 1000 Vdc solar array?
The Mersen 30351 is rated 30A at 600VAC/600VDC, so it is below a 1000 Vdc PV circuit requirement. For that application the Bussmann CHPV2 series photovoltaic fuse block is a modular two-pole block rated 1000 Vdc. Match the block voltage rating to the array open-circuit voltage rather than substituting a 600V class CC block.
6) I need a DIN rail mounted 600V fuse block - is the Mersen 30351 the right choice?
The Mersen 30351 is a panel-style Class CC block with a copper box connector and clip-in fuse installation, not a DIN rail carrier. If DIN rail mounting is the requirement, the Littelfuse LFG60015-1SQDINR is a Class G fuse block rated 600V 15A for DIN rail mounting. Note the fuse class and amperage differ: the Littelfuse is Class G at 15A, while the Mersen is Class CC at 30A, so confirm your fuse selection before switching mounting styles.
7) What wire can I land on the terminals of this Mersen fuse block?
The copper box connector version takes a wide range of stranded or solid copper wire in a box-style clamp terminal. The clips themselves are high-conductivity tin-plated copper alloy. Size your conductor for the 30A circuit the block is rated to carry.
8) Does the Mersen 30351 mount on DIN rail?
It is a panel-mount style Class CC block with a glass-filled polycarbonate body and copper box connectors. If the control panel is built on DIN rail, the Littelfuse LFG60015-1SQDINR is a DIN rail mount block, though it is Class G at 600V 15A rather than Class CC at 30A.
9) I need more than three poles of fusing - do I use the Mersen 30351 or a higher pole-count block?
Two ways to get there. The Mersen Class CC block comes as 1-pole (30351), 2-pole (30352) and 3-pole (20358R) bases, and a snap-on adder block extends any base to as many poles as the job needs, so you build the exact count in Class CC. Alternatively, the Bussmann 3833 series fuse block is offered in 1 to 8-pole configurations as a single factory block, but it is built for AGC glass fuses rather than Class CC, so the fuse you stock changes with it.
10) Is a bolt-in POWR-BLOK the same thing as the Mersen 30351 Class CC block?
No. The Littelfuse LD series POWR-BLOKS fuse block uses bolt-in mounting, while the Mersen 30351 uses a clip-in fuse installation method with a copper box connector that accepts stranded or solid copper wire. Bolt-in blocks terminate the fuse with hardware and are a different install sequence; the Mersen allows tool-free fuse changes once the block is wired. Choose based on whether your panel detail calls for bolted lugs or clip-retained Class CC fuses.
11) How does the Bussmann BCM603 two-pole modular block compare with the Mersen 30352 for a control circuit?
Both are two-pole modular fuse blocks you can group into larger assemblies. The Bussmann BCM603 is a BCM series two-pole modular fuse block. The Mersen 30352 is the two-pole member of the Class CC family, takes all 30A Class CC and 1-1/2 inch x 13/32 inch midget fuses, is rated 30A at 600VAC/600VDC at 50/60 Hz, and uses a glass-filled polycarbonate insulator with dielectric strength verified in excess of 2500V. If your panel is already standardized on Class CC midget fuses, the Mersen keeps that fuse stock unchanged.
12) Is the Mersen Class CC fuse block RoHS compliant for OEM machine builds?
Yes, RoHS compliant, which is what most OEM and machine-building specs require today. It is used in motor control centers, control panels and industrial distribution panels.
13) How is the Mersen 30351 packaged for stocking?
Packaged 10 each, which suits an MRO crib or a panel shop holding spares across several jobs.
How fast can I get the Mersen 30351 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 30351 come with a warranty?
Absolutely. The Mersen 30351 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 30351?
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
Why buy the Mersen 30351 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!