Mersen 20305R Class R Fuse Blo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$32.29
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Mersen 20305R Class R Fuse Block Adder Box, Reinforced Clip

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Model: 20305R

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

$32.29
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Mersen 20305R Class R Fuse Block Adder Box, Reinforced Clip

The Mersen 20305R Class R Fuse Block Adder Box is engineered to accommodate Class R 250 and 600V power fuses within Mersen's broader Class H, K and R fuse block platform. Rated 250VAC/250VDC at 50/60 Hz for AC/DC applications, this adder box snaps onto 1-, 2- or 3-pole blocks to build multipole segmented fuse block assemblies of as many poles as required. Selectable for motor overcurrent protection circuits spanning Motor FLA ratings of 30A, 60A, and 100A, the adder box carries a 200 kA short circuit current rating (SCCR) and features spring reinforced, high conductivity tinplated copper fuse clips for dependable, low-resistance connections in demanding power distribution applications.

Key Features

  • Fuse Class: Designed for Class R power fuses, part of the Class H, K and R fuse block family.
  • Adder Block Configuration: Snaps onto 1-, 2- or 3-pole fuse blocks to form multipole segmented blocks for flexible panel layouts.
  • Motor FLA Range: Available in Motor FLA ratings of 30A, 60A, and 100A to match the application's overcurrent protection needs.
  • Reinforced Clip: Spring reinforced, high conductivity tinplated copper clips deliver reliable, low-resistance fuse contact.
  • Voltage Rating: 250VAC/250VDC at 50/60 Hz for AC or DC power distribution circuits.
  • Short Circuit Current Rating: 200 kA SCCR for demanding fault-current environments.
  • Durable Construction: Glass Filled Polycarbonate insulating body with verified dielectric strength in excess of 2500V.
  • Fuse Installation: Clip-in installation method for quick, secure fuse mounting and replacement.

Certifications & Compliance

  • RoHS Compliant

Technical Specifications

  • ROHS Compliant: Yes
  • Number of Poles: Adder
  • Fuse Type/Class: Class R
  • Motor FLA Options: 30A, 60A, 100A
  • Short Circuit Current Rating (SCCR): 200 kA
  • Frequency: 50/60 Hz
  • AC or DC: AC/DC
  • Fuse Installation Method: Clip-in
  • Body/Insulating Material: Glass Filled Polycarbonate
  • Packaging: 10 EA

Typical Applications

  • Industrial and Commercial Power Distribution
  • Panelboard and Switchboard Fuse Mounting
  • Motor Control and Overcurrent Protection Circuits
  • Segmented Multipole Fuse Block Assemblies
  • Renovation and New Construction Electrical Systems

Why Mersen?

Mersen fuse blocks pair high conductivity tinplated copper clips with a glass-filled polycarbonate body verified to dielectric strengths above 2500V, giving installers a dependable platform for Class R fuse protection across a range of Motor FLA ratings. With a 200 kA SCCR and spring reinforced clip construction, this adder box helps deliver code-compliant, fault-tolerant performance for professional electrical work.

Manufacturer Resources

Mersen Product Catalog

Product Specs

Number of Poles:
Adder
Fuse Type/Class:
Class R
Short Circuit Current Rating (SCCR):
200 kA
Fuse Class:
Class R
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
Department:
Electrical
Product Group:
Wiring Devices
Product Type:
Fuse Block Adder Box
Product Material:
Glass Filled Polycarbonate
Voltage Rating:
250VAC/250VDC
Connection Type:
Clip-in
Listing:
RoHS Compliant
Configuration:
Adder Block
Product Subgroup:
Fuse Holders & Blocks

Mersen 20305R – Frequently Asked Questions

How fast can I get the Mersen 20305R 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 20305R come with a warranty?
Absolutely. The Mersen 20305R 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 20305R?
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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