Mersen Class CC Reinforced Fus...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$22.50
Mersen Class CC Reinforced Fuse Block, 30A 600VAC/600VDC, Glass Filled Polycarbonate

Mersen Class CC Reinforced Fuse Block, 30A 600VAC/600VDC, Glass Filled Polycarbonate

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Model: 30311R

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

$22.50
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Mersen Class CC Reinforced Fuse Block, 30A 600VAC/600VDC

The Mersen Class CC Reinforced Fuse Block delivers reliable overcurrent protection for industrial and commercial electrical systems, rated 600VAC/600VDC at 30A in a 2-Pole configuration. Built with glass filled polycarbonate construction and a reinforced clip-in design, this fuse block accepts Class CC fuses and carries a 200 kA short circuit current rating (SCCR) for demanding fault-current environments. Dual mounting options—screw mount or DIN rail—give panel builders flexible integration across control panels, distribution equipment, and switchgear.

Key Features

  • Dual Voltage Rating: 600VAC/600VDC rated (UL) for flexible AC and DC system compatibility.
  • 30A Current Rating: Handles substantial current loads up to a 30A maximum fuse rating while maintaining reliable overcurrent protection.
  • 2-Pole Configuration: Compact 2-Pole design for streamlined panel wiring.
  • Class CC Compatibility: Clip-in installation ensures proper Class CC fuse coordination and rejection for enhanced safety.
  • Durable Construction: Glass filled polycarbonate body delivers superior insulation and mechanical strength.
  • Reinforced Clip-In Design: Provides secure fuse retention and easy maintenance access.
  • 200 kA Short Circuit Current Rating: Offers exceptional fault current withstand capability for robust system protection.
  • Dual Mounting Options: Accommodates both screw mount and DIN rail installation for flexible panel integration.
  • 50/60 Hz Rating: Compatible with standard AC power frequencies.

Certifications & Compliance

  • RoHS Compliant

Technical Specifications

  • Amperage Rating: 30A

Typical Applications

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

Why Mersen?

Mersen fuse blocks deliver proven reliability with RoHS compliant construction and precision engineering. The reinforced glass filled polycarbonate housing, clip-in Class CC fuse retention, and 200 kA SCCR ensure secure, code-compliant connections for long-term performance in demanding electrical environments, while dual screw mount or DIN rail installation options simplify integration into any control panel or distribution system.

Manufacturer Resources

Product Specs

Product Type:
Fuse Block
Product Material:
Glass Filled Polycarbonate
Voltage Rating:
600VAC/600VDC
Amperage Rating:
30A
Connection Type:
Clip-in
Standards:
RoHS Compliant
Department:
Electrical
Product Group:
Wiring Devices

Mersen 30311R – Frequently Asked Questions

1) Will this Mersen fuse block take Class R or Class G fuses, or only Class CC?
Class CC only. The Mersen 30311R series block uses a reinforced clip-in fuse holder built around the Class CC rejection feature, so a Class R or Class G fuse will not seat in it. If your panel drawing calls for Class R at 600V 30A, the Littelfuse LFR60030-3CID Class R block is the one to pull instead; for Class G at 600V 15A, look at the Littelfuse LFG60015-1SQDINR.
2) What part number do I order for a single-phase two-wire circuit versus a three-phase feeder?
Pole count is the ordering choice. One pole is 30311R, two poles is 30312R, three poles is 30313R. A single-phase two-wire branch takes the 2-pole 30312R if you are fusing both conductors, or the 1-pole 30311R for a single ungrounded conductor. Three-phase feeders take the 3-pole 30313R. All three are the same 30A 600VAC/600VDC Class CC block.
3) Can I use this Mersen Class CC block on a DC circuit, not just AC?
Yes, it is rated 600VAC and 600VDC, so the same block covers AC control circuits and DC buses up to 600V. The AC side is rated for 50/60 Hz. Note that the fuse itself has to carry a DC rating too, since the block's DC rating does not confer one on the fuse.
4) Does this fuse block mount on DIN rail or does it have to be screwed to the subpanel?
Either one. The Mersen reinforced Class CC block is built for both screw mounting and DIN rail mounting, so panel builders can drop it onto existing rail or bolt it directly to a back plate. That is a difference worth noting against a bolt-in only block like the Littelfuse LD Series POWR-BLOKS.
5) What SCCR does this Mersen fuse block carry for my panel's short circuit current rating label?
200 kA. The Mersen Class CC reinforced block is rated for a 200,000 A short circuit current withstand, which is the usual number Class CC fusing is used to buy in an industrial control panel where the supply fault current is high. The fuse selected still governs the assembly's final rating.
6) I need a fuse block for a solar string combiner at 1000 Vdc. Will this Mersen 30A Class CC block work?
No. The Mersen Class CC block tops out at 600VDC, so it is not suitable for a 1000 Vdc PV array. For photovoltaic service at that voltage, the Bussmann CHPV2 Series modular two-pole PV fuse block is rated 1000 Vdc.
7) What Class R fuse block can I use instead of the Mersen 30311R for a 600V 30A circuit?
The Littelfuse LFR60030-3CID is a Class R fuse block rated 600V 30A, so it covers the same 30A, 600V territory but with Class R fuse bodies rather than Class CC. The Mersen 30311R family is rated 600VAC/600VDC at 30A and uses a clip-in connection sized for Class CC fuses. The two fuse classes are not interchangeable in the same holder - Class CC fuses are physically smaller and use a rejection feature, so choose the block that matches the fuse class called out on the panel schedule. The Mersen block is also rated for DC as well as AC at 600V, which matters if the circuit is a DC bus.
8) Is the Bussmann CHPV2 a substitute for the Mersen Class CC block on a solar combiner?
No - the Bussmann CHPV2 series is a photovoltaic fuse block, modular two-pole, rated 1000 Vdc, which is a PV-specific holder built around the higher DC bus voltages found on string combiners. The Mersen Class CC reinforced fuse block is rated 600VAC/600VDC at 30A and takes Class CC fuses. If the array operates above 600 Vdc, the Mersen block is not the right part; if you are protecting a 600V control or distribution circuit, the CHPV2 is the wrong direction. Match the block to the maximum system DC voltage on the drawing.
9) Is the body strong enough for a vibrating machine enclosure or an MCC bucket?
The housing is glass filled polycarbonate, which is used here for both dielectric strength and mechanical rigidity, and the clip-in fuse retention is a reinforced design meant to hold the fuse in place while still allowing tool-free replacement. It is intended for industrial control panels, motor control centers, distribution gear, and switchgear.
10) What is the largest fuse I can put in this block?
30 amps is the maximum fuse rating for this Mersen block, across all three pole configurations. Class CC fuses are made in ratings up to 30A, so the block covers the full class. If your circuit needs more than 30A you are out of Class CC entirely and into a different fuse class and block.
11) I need a smaller amperage fuse block for a control transformer primary - is there an option below 30A?
The Littelfuse LFG60015-1SQDINR is a Class G fuse block rated 600V 15A with DIN rail mounting, which suits a lower-amperage control circuit tap. The Mersen Class CC block tops out at a 30A maximum fuse rating at 600VAC/600VDC, though you can always fit a smaller Class CC fuse within that block. The practical difference is fuse class: Class G and Class CC are different bodies and are not cross-compatible in the same holder. The Mersen block accepts either screw mount or DIN rail, so DIN rail is available either way.
12) My panel drawing calls for a bolt-in power fuse block rather than a clip-in - what should I order?
The Littelfuse LD Series POWR-BLOKS fuse block uses bolt-in mounting, which is what a drawing means when it specifies bolted terminations for a power block. The Mersen Class CC block uses a clip-in connection with a reinforced clip design for fuse retention, mounted by screw or on DIN rail. Clip-in makes fuse changes faster for maintenance; bolt-in is what larger power-distribution blocks typically use. The Mersen block is also 600VAC/600VDC rated at 30A with a glass filled polycarbonate body, so it is aimed at control panel work rather than heavier bolted feeder duty.
13) Which 600V 30A fuse block do I pick if the load is DC?
The Mersen Class CC reinforced fuse block is rated 600VAC/600VDC, so it is listed for DC service at the same 600V level as AC, at 30A. Of the alternatives, the Bussmann CHPV2 series is a 1000 Vdc photovoltaic block, which is a DC-only part built for solar strings rather than general control panel use. The Littelfuse LFR60030-3CID is a Class R block described at 600V 30A. For a general-purpose DC control or distribution circuit at 600 volts, the Mersen Class CC block with its 200 kA SCCR is the straightforward choice.
14) Is this Mersen fuse block RoHS compliant for an export panel build?
Yes, the block is RoHS compliant, which is what most OEM panel specs and EU-bound machinery builds ask for on component-level documentation.
How fast can I get the Mersen 30311R 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 30311R come with a warranty?
Absolutely. The Mersen 30311R 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 30311R?
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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