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Mersen 60608R Class R Fuse Block, 60A 3-Pole, 600VAC/600VDC
Model: MER-60608R
Mersen 60608R Class R Fuse Block, 60A 3-Pole, 600VAC/600VDCThe Mersen 60608R Class R Fuse Block delivers dependable overcurrent protection for industrial and commercial electrical systems, combining...
Mersen
$214.41
$156.70
Mersen 61038R Class R Fuse Block, 600VAC/600VDC 100A 3-Pole, Reinforced Clip
The Mersen 61038R Class R Fuse Block delivers reliable overcurrent protection for industrial and commercial electrical systems, combining 600VAC/600VDC dual voltage capability with a 100A rating in a 3-pole configuration. This professional-grade fuse block uses a reinforced clip-in fuse installation and glass filled polycarbonate construction for durability in demanding environments, and it carries a 200 kA short circuit current rating for robust fault protection. Screw mount or DIN rail installation options make it a versatile fit for panel and enclosure layouts.
Key Features
- 100A Rating: Handles substantial current loads for commercial and industrial circuit protection applications.
- 600VAC/600VDC Dual Voltage: Versatile voltage compatibility supports both AC and DC electrical systems up to 600V.
- 3-Pole Configuration: Sized for three-phase and multi-conductor circuit protection needs.
- Class R Fuse Technology: Current-limiting fuses provide superior arc fault protection and enhanced safety performance.
- Durable Construction: Glass filled polycarbonate body withstands harsh environments and provides long-term reliability.
- Reinforced Clip-In Design: Secure fuse installation method ensures reliable electrical connections and easy maintenance access.
- 200 kA SCCR Rating: High short circuit current rating provides robust fault protection in high-energy electrical systems.
- Flexible Mounting Options: Screw mount or DIN rail installation accommodates various panel and enclosure configurations.
Certifications & Compliance
- RoHS Compliant
Technical Specifications
- Rohs Compliant: Yes
Typical Applications
- Industrial Motor Control Centers
- Commercial Electrical Distribution Panels
- Manufacturing Equipment Protection
- Process Control Systems
- Power Distribution Switchgear
- Critical Infrastructure Facilities
Why Mersen?
Mersen fuse blocks deliver proven reliability with RoHS compliant construction and professional-grade materials. The glass filled polycarbonate body, reinforced clip-in fuse retention, and 200 kA SCCR rating ensure secure connections and dependable, code-compliant performance in demanding industrial and commercial electrical applications.
Manufacturer Resources
Mersen Product Catalog
Product Specs
- Product Type:
- Fuse Block
- Product Material:
- Glass Filled Polycarbonate
- Voltage Rating:
- 600V
- Amperage Rating:
- 100A
- Configuration:
- 3-Pole
- Connection Type:
- Clip-In
- Standards:
- RoHS Compliant
- Department:
- Electrical
- Product Group:
- Circuit Protection
- Product Subgroup:
- Fuse Holders & Blocks
- Product Length:
- 10.08 in
- Product Weight:
- 2.9 lb
- Product Height:
- 2.48 in
- Product Width:
- 5.8 in
- Number Of Poles:
- Three-pole
Mersen 61038R – Frequently Asked Questions
1) Will the Mersen 61038R fuse block accept Class R fuses only, or can I put a standard Class H/K fuse in it?
The 61038R is built for Class R fuses. Class R fuses carry a rejection groove on the blade, and the block's rejection clips accept them while blocking a non-current-limiting Class H or K fuse of the same case size from being installed. That rejection feature is the whole point of the block: it keeps the 200 kA short circuit current rating of the assembly intact by preventing someone from dropping in a lower interrupting fuse during maintenance.
2) Can I use this Mersen fuse block on a 480V three-phase motor circuit?
Yes. The 61038R is rated 600V, in a 3-pole configuration, so a 480V three-phase feeder or motor branch circuit is within rating. It is rated for both 600VAC and 600VDC, which also makes it usable on DC drive and battery circuits where many AC-only blocks are not.
3) What is the maximum fuse amperage I can install in the Mersen 61038R?
100A. The block is sized for Class R fuses up to 100 amps per pole, across all three poles. If your calculated branch circuit or motor protection lands above 100A, this is the wrong block and you need the next case size up; Class R fuse blocks step in case sizes (0-30A, 31-60A, 61-100A), so a 100A block will not take a 110A or 200A fuse.
4) What is the difference between the Mersen 61038R and the Littelfuse LFR60030-3CID Class R block?
Both are 600V three-pole Class R blocks, so the fuse class and rejection behavior are the same. The difference is capacity: the Mersen 61038R takes Class R fuses up to 100A, while the Littelfuse LFR60030-3CID is a 30A block. Pick by the fuse case size your branch circuit calls for, since a 30A Class R fuse will not fit 100A clips and the reverse is equally true.
5) Is the Mersen 61038R suitable for a 1000 Vdc solar array, or is a photovoltaic fuse block needed?
The Mersen 61038R is rated 600V, covering 600VAC/600VDC circuits, so it is not the block for a 1000 Vdc PV string. The Bussmann CHPV2 Series photovoltaic fuse block is a modular two-pole design rated 1000 Vdc for that service. Use the 61038R for 600V-class three-phase and DC distribution at 100A, and the CHPV2 where the array operates above 600 Vdc.
6) Can a Class G fuse block be used in place of the Mersen 61038R Class R block?
No. The Littelfuse LFG60015-1SQDINR is a Class G fuse block rated 600V at 15A, and Class G fuses have a different body size and rejection feature than the Class R fuses the Mersen 61038R is built around. The Mersen block is a 600VAC/600VDC 100A 3-pole Class R device; a Class G fuse will not seat in its clips, and the 15A Class G block is intended for small control and lighting loads rather than a 100A feeder.
7) What is the closest Class R fuse block to the Mersen 61038R for a lower-amperage branch circuit?
For a smaller branch circuit, the Littelfuse LFR60030-3CID is also a Class R fuse block rated 600V at 30A, versus the Mersen 61038R at 600V and 100A in a 3-pole clip-in arrangement. Both accept Class R fuses at 600 volts, so the deciding factor is the ampere rating the circuit and fuse call for: 100A blocks take larger Class R fuse bodies than 30A blocks, and the two are not interchangeable in the same panel position.
8) Does this fuse block mount on DIN rail or does it have to be screwed to the panel?
Either. The 61038R offers screw mount or DIN rail installation, so it drops into an existing panel subplate with screws or clips onto standard rail alongside other DIN-mounted gear. That flexibility matters when you are retrofitting a control panel where the rail layout is already set.
9) How do the fuses hold in this block, and will they stay tight under vibration?
Fuses clip in rather than bolt in. Mersen uses a reinforced clip design on the 61038R for fuse retention, which keeps contact pressure on the fuse blades and makes fuse changes a pull-and-replace job with no hardware to lose in the enclosure. If your application specifically calls for a bolted connection, a bolt-in block such as the Littelfuse LD Series POWR-BLOKS is the different approach.
10) What part number do I order for the Mersen 100A three-pole Class R fuse block?
Order Mersen 61038R. That single manufacturer part number covers the 600VAC/600VDC, 100A, 3-pole Class R block with the reinforced clip. Fuses are separate: the block holds Class R fuses, it does not ship with them.
11) When would a bolt-in fuse block be specified instead of the clip-in Mersen 61038R?
The Mersen 61038R uses a reinforced clip-in fuse connection, 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 rather than clipped. Bolt-in retention is typically chosen where vibration or a bolted-fuse specification governs, while clip-in blocks like the 61038R favor faster fuse changes during maintenance.
12) Which fuse block should a panel builder choose when only two poles are required?
The Mersen 61038R is a 3-pole block, sized for three-phase and multi-conductor circuit protection. Where only two poles are needed and the circuit is a 1000 Vdc photovoltaic run, the Bussmann CHPV2 Series is a modular two-pole photovoltaic block. Pole count is not field-modifiable on the Mersen unit, so confirm the number of protected conductors before ordering.
13) What is the fuse block body made of, and will it hold up in a hot industrial enclosure?
The body is glass filled polycarbonate. Glass fill adds dimensional stability and mechanical strength over plain thermoplastic, which is why Mersen specifies it for the 61038R in industrial motor control centers, switchgear, and manufacturing equipment panels.
14) Does the Mersen 61038R meet RoHS for a spec that requires it?
Yes, the 61038R is RoHS compliant. That is the compliance mark Mersen publishes on this block, and it is the one to cite on submittals where restricted substances are called out.
15) Does the Littelfuse LFR60030-3CID mount the same way as the Mersen 61038R?
The Mersen 61038R offers screw mount or DIN rail installation, which suits both panel-backplate and rail layouts. Among Class G alternatives, the Littelfuse LFG60015-1SQDINR is a DIN rail mount block, while the Littelfuse LFR60030-3CID is the 600V 30A Class R option in the same family. Verify the mounting footprint against the enclosure layout, since a 100A three-pole body occupies more backplate width than a 30A or 15A block.
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Does the Mersen 61038R come with a warranty?
Absolutely. The Mersen 61038R is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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