Bussmann RM25030-3CR 3-Pole Cl...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$86.73
Bussmann RM25030-3CR 3-Pole Class R Fuse Block, 250-Volt, 30-Amp

Bussmann RM25030-3CR 3-Pole Class R Fuse Block, 250-Volt, 30-Amp

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Model: RM25030-3CR

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

$86.73
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Bussmann RM25030-3CR 3-Pole Class R Fuse Block, 250-Volt, 30-Amp

The Bussmann RM25030-3CR is a 3-Pole Class R fuse block engineered to deliver dependable overcurrent protection for electrical distribution systems. Rated 250-Volt, 30-Amp, this fuse block is built to accept Class R fuses, providing the mounting and connection points needed to install fuse-based circuit protection in panelboards, switchboards, and industrial control equipment. The 3-Pole configuration allows the RM25030-3CR to protect three-phase circuits from a single, compact assembly, simplifying installation and maintenance for electrical professionals. This model streamlines fuse-based circuit protection for facilities requiring Class R rated overcurrent devices.

Key Features

  • 3-Pole Configuration: Provides three individual fuse positions within a single fuse block assembly, supporting three-phase overcurrent protection.
  • Class R Fuse Compatibility: Designed to accept Class R fuses, allowing use with high-performance fuses commonly specified for demanding electrical applications.
  • 250-Volt Rating: Rated for 250-Volt distribution systems, aligning with common commercial and industrial electrical requirements.
  • 30-Amp Rating: Rated to handle 30-Amp circuit loads, delivering dependable overcurrent protection at the specified rating.
  • Model RM25030-3CR: Clearly identified model number simplifies specification, sourcing, and field replacement.
  • Fuse Block Assembly: Offers secure mounting and wiring connection points for Class R fuses, supporting fast and reliable panel installation.
  • Panel-Mount Design: Configured for installation within panelboards and switchboards as part of a fuse-based overcurrent protection scheme.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Panelboard and Switchboard Overcurrent Protection
  • Industrial Control Panel Wiring
  • Three-Phase Circuit Protection Systems
  • Commercial and Industrial Electrical Distribution
  • Fuse-Based Overcurrent Protection Retrofits

Why Bussmann?

Bussmann fuse blocks are built to provide reliable, code-compliant overcurrent protection for professional electrical installations. The RM25030-3CR's 3-Pole, Class R design ensures compatibility with standard Class R fuses, supporting dependable performance and straightforward replacement. Specify Bussmann for trusted overcurrent protection components in commercial and industrial electrical systems. Bussmann is a widely specified brand for fuse-based overcurrent protection in commercial, industrial, and OEM electrical equipment.

Manufacturer Resources

Product Specs

list_batch:
BUSS-20260919
Product Type:
Fuse Block
Configuration:
3-Pole
Voltage Rating:
250V
Amperage Rating:
30A
Standards:
Class R
Department:
Electrical
Product Subgroup:
Fuse Holders & Blocks
Product Group:
Circuit Protection

Bussmann RM25030-3CR – Frequently Asked Questions

1) Can I use a 250V Class R fuse block on a 480V three-phase circuit?
No. The RM25030-3CR is rated 250V, so it is limited to systems at or below that, typically 120/240V single phase or 240V three phase. For a 480V system you need a 600V-rated Class R block, such as the Littelfuse LFR60030-3CID, which is a 600V 30A Class R block.
2) Will one RM25030-3CR cover all three phases, or do I need three blocks?
One block covers all three. It is a 3-pole assembly with three fuse positions in a single body, so a three-phase 30A branch is protected from one unit rather than three single-pole blocks ganged together.
3) What is the closest cross-brand equivalent to the Bussmann RM25030-3CR Class R fuse block?
The nearest cross-brand match in Class R, 3-pole, 30-amp form is the Littelfuse LFR60030-3CID Class R fuse block, rated 600V 30A. Both accept Class R fuses in a three-pole assembly at 30 amps; the Bussmann RM25030-3CR is rated 250V while the Littelfuse unit is rated 600V, so confirm the system voltage on your drawing before substituting in either direction.
4) I need a 600V Class R fuse block instead of a 250V one - what should I use?
The Bussmann RM25030-3CR is rated 250V, so for a 600-volt circuit use the Littelfuse LFR60030-3CID Class R fuse block, which is rated 600V at 30A. It keeps the Class R fuse class and the 30-amp rating, so your fuse selection does not have to change.
5) I am replacing an old Class H fuse block in a disconnect. Can I drop in a Class R block instead?
Functionally yes, and it is a common upgrade: Class R blocks reject non-current-limiting Class H and K fuses, so once installed nobody can downgrade the protection at the next fuse change. The RM25030-3CR covers it for a 3-pole 30A circuit at 250V or less. What you have to confirm on your own is the physical mounting footprint and wire lug size in the existing enclosure, since a Class R block is a different assembly, not a strict drop-in for every box.
6) Does the Bussmann RM25030-3CR come with fuses?
No. It is the block only, providing the fuse clips, mounting, and wiring terminations. The Class R 250V 30A fuses are ordered separately, three per block for a three-phase circuit.
7) Can I use a Class G fuse block in place of the Bussmann RM25030-3CR?
No. The RM25030-3CR is built to accept Class R fuses, and the Littelfuse LFG60015-1SQDINR is a Class G fuse block rated 600V 15A - a different fuse class with different fuse dimensions and a lower amp rating, so Class R fuses will not fit it. Class G blocks are a separate selection, not a substitute for a Class R block.
8) I need a Class R fuse block that mounts on DIN rail rather than in a panel - what are my options?
The Bussmann RM25030-3CR is configured for installation within panelboards and switchboards. If your control panel is built around DIN rail, the Littelfuse LFG60015-1SQDINR is a DIN rail mount fuse block, though it is a Class G block rated 600V 15A rather than Class R, so the fuse class and amp rating change with it. Verify the fuse class your circuit is specified for before switching mounting styles.
9) What part number do I give my distributor for this Bussmann Class R block?
Order it as Bussmann RM25030-3CR. That is the manufacturer part number for the 3-pole, 250V, 30A Class R block, and it is the single orderable configuration.
10) Can I use this fuse block on a 30A motor branch circuit?
It suits a 30A three-phase branch at 250V or less, which is where a 3-pole Class R block is typically applied in industrial control panels. Size the fuse itself to the load, since motor circuits normally call for a time-delay Class R fuse (RK5) rather than a fast-acting one, and the block's 30A rating is the ceiling, not the required fuse size.
How fast can I get the Bussmann RM25030-3CR 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 Bussmann RM25030-3CR come with a warranty?
Absolutely. The Bussmann RM25030-3CR 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 Bussmann RM25030-3CR?
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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