Mersen 60308R Class R Fuse Blo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$192.40
$131.37
Mersen 60308R Class R Fuse Block, 600VAC/600VDC 30A 3-Pole

Mersen 60308R Class R Fuse Block, 600VAC/600VDC 30A 3-Pole

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Model: 60308R

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

$192.40
$131.37
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Mersen 60308R Class R Fuse Block, 600VAC/600VDC 30A 3-Pole

The Mersen 60308R Class R Fuse Block delivers reliable 30A overcurrent protection for both AC and DC circuits rated up to 600VAC/600VDC. Built with a robust 3-pole configuration and a reinforced clip-in fuse installation, this professional-grade fuse block uses glass filled polycarbonate insulation with direct screw mounting for secure installation in commercial and industrial electrical systems. A 200 kA short circuit current rating (SCCR) ensures dependable performance even under demanding fault conditions.

Key Features

  • 30A Class R Rating: Provides precise overcurrent protection with Class R fuse compatibility for enhanced safety and performance.
  • 600VAC/600VDC Dual Voltage: Versatile voltage rating accommodates both AC and DC applications in a single unit.
  • 3-Pole Configuration: Complete three-phase protection in a compact design for multi-phase electrical systems.
  • Reinforced Clip-In Design: Secure fuse retention with easy installation and replacement for reduced maintenance time.
  • 200 kA Short Circuit Rating: High fault current interruption capability ensures reliable protection under extreme conditions.
  • Durable Construction: Glass filled polycarbonate insulation provides excellent electrical properties and mechanical strength.
  • Direct Screw Mount Installation: Secure mounting method ensures stable installation in panels and enclosures.
  • Torque Rating: Rated to 35 lb-in for secure, code-compliant terminal connections.

Certifications & Compliance

  • RoHS Compliant

Technical Specifications

  • Ac Or Dc: AC/DC
  • Ampere Rating: 30 A
  • Body Insulating Material: Glass Filled Polycarbonate
  • Frequency Hz: 50/60 Hz
  • Fuse Class: Class R
  • Fuse Installation Method: Clip-in
  • Installation Mounting: Direct Screw Mount
  • Max Fuse Rating: 30 A
  • Number Of Poles: 3-Pole
  • Product Height: 2 in
  • Product Length: 7 in
  • Product Weight: 0.85 lb
  • Product Width: 4.56 in
  • Rated Voltage Ac Ul: 600 V
  • Rated Voltage Dc Ul: 600 V
  • Rohs Compliant: Yes
  • Short Circuit Current Rating Sccr: 200 kA
  • Torque Rating: 35 lb-in

Typical Applications

  • Industrial Control Panels
  • Commercial Electrical Distribution
  • Motor Control Centers
  • Power Distribution Equipment
  • Manufacturing Facilities
  • Process Control Systems
  • Electrical Switchgear Applications

Why Mersen?

Mersen fuse blocks deliver proven reliability with RoHS compliant construction and professional-grade materials. The glass filled polycarbonate insulation and 200 kA short circuit current rating ensure dependable performance in demanding electrical applications, backed by precise 35 lb-in torque specifications for secure, code-compliant connections in commercial and industrial power distribution systems.

Manufacturer Resources

Mersen Product Catalog

Product Specs

Product Type:
Fuse Block
Product Material:
Glass Filled Polycarbonate
Voltage Rating:
600VAC/600VDC
Amperage Rating:
30A
Configuration:
3-Pole
Connection Type:
Clip-In
Department:
Electrical
Product Group:
Circuit Protection
Product Subgroup:
Fuse Holders & Blocks
Product Weight:
0.85 lb
Product Length:
7 in
Product Height:
2 in
Product Width:
4.56 in
Number Of Poles:
Three-pole

Mersen 60308R – Frequently Asked Questions

1) Can I use this Mersen fuse block on a 600VDC circuit, or is it AC only?
Both. The 60308R is rated 600VAC and 600VDC, so it works in DC bus and battery applications as well as 50/60 Hz AC distribution. A lot of fuse blocks are AC-only, so this is the spec to check if you are building a DC panel.
2) I need a Class R 30A 600V three-phase fuse block. Is there an alternative to the Mersen 60308R?
The Littelfuse LFR60030-3CID is the direct cross: Class R, 600V, 30A. If you are standardizing a panel shop on one brand, that is the equivalent to spec. The other direction is the Littelfuse LD Series POWR-BLOKS, which is a bolt-in mounting block rather than a screw-mount style, useful when your subplate is already drilled and tapped for bolt-in hardware.
3) What is the closest equivalent to a Mersen 60308R Class R fuse block?
The Littelfuse LFR60030-3CID is the nearest match. It is a Class R fuse block rated 600V, 30A, matching the Mersen 60308R's Class R fuse class, 600VAC/600VDC rating and 30A ampere rating. The Mersen unit is a 3-pole block with clip-in fuse retention, so confirm pole count and terminal arrangement against your panel layout before swapping.
4) Will the Mersen 60308R work on a solar PV array?
The Mersen 60308R is rated 600VAC/600VDC, so it suits DC circuits only up to 600V. Typical PV string voltages run higher. For photovoltaic work, the Bussmann CHPV2 Series photovoltaic fuse block is a modular two-pole block rated 1000 Vdc. Use the 60308R for industrial control panels, motor control centers and power distribution at or below its 600V DC rating.
5) I need a DIN rail mounted fuse block, not a screw mount one. What is the alternative to the Mersen 60308R?
The Mersen 60308R uses direct screw mounting into a panel or enclosure. If your enclosure is built around DIN rail, the Littelfuse LFG60015-1SQDINR is a DIN rail mount fuse block rated 600V 15A, though it is a Class G block rather than Class R, so the fuse itself changes with the mounting method.
6) What torque should I use on the terminals of the Mersen 60308R fuse block?
35 lb-in on the terminal screws. Use a calibrated torque screwdriver, torque the conductor connections at install and re-check after the panel has been through a heat cycle. Under-torqued terminals on a 30A three-phase feed are the usual cause of heating at the block.
7) Do I have to order three single-pole blocks for a three-phase circuit, or is the 60308R one unit?
One unit. The 60308R is a 3-pole block, so all three phases land on a single body with a single mounting footprint. You still buy the three Class R fuses separately, rated to 30A maximum, since fuses are not supplied with the block.
8) How are the fuses held in the Mersen 60308R, and how hard is a fuse change?
Clip-in retention. Fuses push into reinforced spring clips rather than bolting down, so a 30A Class R replacement is a pull-and-push with the circuit dead, no terminal hardware to loosen. Good where maintenance access matters. If your spec calls for bolted fuse connections instead, look at a bolt-in style block such as the Littelfuse LD Series POWR-BLOKS.
9) What is the difference between a bolt-in fuse block and the clip-in Mersen 60308R?
The Mersen 60308R holds the fuse with a reinforced clip-in design, so fuses press into spring clips for quick replacement. The Littelfuse LD Series POWR-BLOKS block uses bolt-in mounting instead, where the fuse is fastened down with hardware. Clip-in shortens fuse changeout; bolt-in trades that for a mechanically fastened connection.
10) I only need two poles, not three. What are my options versus the Mersen 60308R?
The Mersen 60308R is a 3-pole block for three-phase circuits. For a two-pole arrangement, the Bussmann CHPV2 Series block is a modular two-pole design, though it is a photovoltaic block rated 1000 Vdc rather than a Class R block. If you need Class R at 600V, stay with the 30A Class R family and confirm the pole count matches your circuit.
11) Is the Mersen 60308R body material suitable for a hot industrial enclosure?
The body is glass filled polycarbonate, which is the standard insulating base for commercial and industrial fuse blocks and holds dimensional stability and dielectric strength better than unfilled thermoplastic. It is used in motor control centers, switchgear and process control panels.
12) Is the Mersen 60308R RoHS compliant for a spec that requires it?
Yes, the 60308R is RoHS compliant. That is the compliance item stated for this block, and it is the one procurement usually needs on the submittal for institutional and government work.
How fast can I get the Mersen 60308R 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 60308R come with a warranty?
Absolutely. The Mersen 60308R 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 60308R?
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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