Applied Control Inc.
Industrial Automation & Power DistributionMarathon Special Products for Data Centers & BESS
Power distribution blocks, fuse holders, and terminal blocks rated up to 1500VDC — purpose-built for datacenter PDUs, battery energy storage systems, fuel cell power modules, and renewable energy applications. American-made in Bowling Green, Ohio.
Where Marathon Components Go
MSP components are installed inside the power infrastructure that keeps datacenters, battery storage systems, and distributed generation running.
Data Center PDUs & RPPs
Floor-standing Power Distribution Units (150kVA–1MVA+) and Remote Power Panels that feed server racks in hyperscale and colocation facilities.
- Main bus distribution blocks
- Sub-feed branch circuit protection
- Modular e-house & prefab power skids
- Switchgear internal distribution
Battery Energy Storage (BESS)
DC string fusing, busbar distribution, and circuit protection inside battery containers and power conversion systems operating at 1500VDC.
- Battery rack string fusing (1500VDC)
- DC busbar power distribution
- Inverter/PCS internal distribution
- Combiner box fuse holders
Fuel Cell & Distributed Generation
Internal power distribution for fuel cell servers, natural gas genset packages, and microgrid power modules from OEMs like Bloom Energy, Caterpillar, and Rolls Royce.
- Fuel cell module power distribution
- Generator set internal wiring
- Microgrid controller panels
- UPS integration systems
Key Product Lines for DC & BESS
These are the Marathon Special Products families most commonly specified into datacenter, energy storage, and distributed generation applications.
EPDB Series — Enclosed Power Distribution Blocks
Modular, single-pole enclosed design for splicer, distribution, and studded configurations. The 1500VDC rating makes this the go-to product for BESS DC busbar distribution and high-voltage DC applications in datacenter power modules.
BFPB Series — Busbar Flex Power Blocks
Single-pole design with stud fasteners for terminating crimp lugs or flexible busbar. Mounts directly to busbar inside PDU cabinets, switchgear, and power modules — ideal for large or non-standard wiring combinations.
PV Fuse Holders — 1500VDC Busbar Mount
Busbar-mount fuse holders designed for photovoltaic string protection, BESS string fusing, and DC combiner box applications. Direct busbar mounting eliminates wire connections and reduces installation time.
NEMA Power Blocks — Splicer & Distribution
The broadest line of open-style power distribution blocks in North America. Available in splicer and distribution configurations with multiple terminal styles. The standard building block inside datacenter floor PDUs and RPPs.
Zero Torque Power Distribution Blocks
Push-in terminal technology eliminates the torque process on load distribution terminals. Removes the need for torque wrenches, specialized labor, and re-torque verification — a major labor and time savings on repetitive datacenter panel builds at scale.
General Purpose Fuse Holders
Full range of NEMA/barrier-style fuse holders for branch circuit protection in datacenter PDUs, RPPs, and control panels. Available in every major fuse class with multiple terminal options.
Bussmann & Mersen to Marathon Cross-Reference
Use these tables to identify the Marathon Special Products equivalent for your current Bussmann or Mersen fuse holders and power blocks. Can't find your part? Submit it for a custom cross-reference.
| Bussmann Part # | Mersen / Ferraz Part # | Marathon Equivalent | Class | Amps | Volts |
|---|---|---|---|---|---|
| JM60030-xCR | US3J-x / USJ-x | 6J30AxS / R6J30AxS | Class J | 30A | 600V |
| JM60060-xCR | US6J-x / USJ-x | 6J60AxB / R6J60AxB | Class J | 60A | 600V |
| JM60100-xCR | — | R6J100AxB | Class J | 100A | 600V |
| JM60200-xCR | — | 6J200AxBFBD | Class J | 200A | 600V |
| JM60400-xCR | — | 6J400AxBFBD | Class J | 400A | 600V |
| JM60600-xCR | — | 6J600AxBFBD | Class J | 600A | 600V |
| CH30Jx / CH30JxI | US3J-x | 6SJ30Ax / 6SJ30AxI | Class J (DIN) | 30A | 600V |
| CH60Jx / CH60JxI | US6J-x | 6SJ60Ax / 6SJ60AxI | Class J (DIN) | 60A | 600V |
| RM25030-xCR | — | R30Ax / 6R30Ax | Class R (250V) | 30A | 250V |
| RM25060-xCR | — | R60Ax / 6R60Ax | Class R (250V) | 60A | 250V |
| RM25100-xCR | — | R100AxB / 6R100AxB | Class R (250V) | 100A | 250V |
| RM25200-xCR | — | R200AxBE / 6R200AxBE | Class R (250V) | 200A | 250V |
| RM60030-xCR | — | 6R30Ax | Class R (600V) | 30A | 600V |
| RM60060-xCR | — | 6R60Ax | Class R (600V) | 60A | 600V |
| RM60100-xCR | — | 6R100AxB | Class R (600V) | 100A | 600V |
| RM60200-xCR | — | 6R200AxBE | Class R (600V) | 200A | 600V |
| RM60400-xCR | — | 6R400AxB | Class R (600V) | 400A | 600V |
| RM60600-xCR | — | 6R600AxB | Class R (600V) | 600A | 600V |
| CHCCxDU / CHCCxDIU | USCCx / USCCxI | 6SC30Ax-C / 6SC30AxI-C | Class CC | 30A | 600V |
| CHMxDU / CHMxDIU | USMx / USMxI | 6SM30Ax-C / 6SM30AxI-C | Midget | 30A | 600V |
| CHPV (holder) | US15M1HEL (holder) | PV15BW32 | PV 1500VDC | 32A | 1500VDC |
| PV-15A14LF10F (fuse) | HP15M15 (fuse) | PV15BW32 accepts both | PV Fuse | 15A | 1500VDC |
| PV-20A14LF10F (fuse) | HP15M20 (fuse) | PV15BW32 accepts both | PV Fuse | 20A | 1500VDC |
| PV-25A14LF10F (fuse) | HP15M25 (fuse) | PV15BW32 accepts both | PV Fuse | 25A | 1500VDC |
| PV-32A14LF10F (fuse) | HP15M32 (fuse) | PV15BW32 accepts both | PV Fuse | 32A | 1500VDC |
| Bussmann 16021-x | Mersen MPDB63131 | MSP 1321 Series | PDB - Distribution | 175A | 600V |
| Bussmann 16022-x | Mersen MPDB63132 | MSP 1322 Series | PDB - Distribution | 175A | 600V |
| Bussmann 16023-x | Mersen MPDB63133 | MSP 1323 Series | PDB - Distribution | 175A | 600V |
| Bussmann 16370-x | Mersen MPDB series | MSP 1331 Series | PDB - Splicer | 310A | 600V |
| Bussmann 16380-x | — | MSP 1351 Series | PDB - Distribution | 570A | 600V |
| — | — | EPDB Series | Enclosed PDB | 115–760A | 1500VDC |
| — | — | BFPB Series | Busbar Flex PDB | Up to 1605A | 1000V |
Note: "x" denotes pole count (1, 2, 3). Cross-references shown are functional equivalents — wire ranges and specific terminal styles may vary. Always verify specifications for your application. Can't find your part? Submit a cross-reference request and we'll get you the Marathon equivalent within 24 hours.
Why Contractors & OEMs Are Moving to Marathon
Lead Time Advantage
Bussmann and Mersen lead times have stretched to 16–24+ weeks on many fuse holders and power blocks. Marathon ships from stock or produces in weeks, not months — critical when your datacenter schedule can't slip.
American Manufacturing
Marathon products are manufactured in Bowling Green, Ohio — vertically integrated from molding to assembly. Shorter supply chain, no import delays, no tariff exposure on core products.
1500VDC Expertise
The EPDB Series and PV fuse holder line are purpose-built for the 1500VDC architectures driving modern BESS and solar-plus-storage. Not retrofitted from legacy 600V designs.
Custom OEM Capability
Marathon's engineering team builds custom and semi-custom configurations for OEMs like fuel cell, genset, and power module manufacturers — from prototype to production.
Powering the Biggest Names in Energy
Marathon Special Products components are inside power systems from leading OEMs serving datacenters, distributed generation, and grid-scale storage.
Local Support Across the Midwest
Applied Control Inc. is your authorized Marathon Special Products representative covering Michigan, Ohio, and Indiana — with deep relationships across datacenter contractors, panel builders, and OEMs.
Get a Cross-Reference or Quote
Send us your current Bussmann or Mersen part numbers and we'll provide the Marathon Special Products equivalent with pricing and lead time within 24 hours.
Marathon Special Products: The Data Center & BESS Power Distribution Solution
As data center construction reaches record levels — with over $36 billion in starts in the first two months of 2026 alone — the demand for reliable power distribution components has never been higher. Marathon Special Products, manufactured in Bowling Green, Ohio by Regal Rexnord, provides the power distribution blocks, fuse holders, and terminal blocks that go inside the critical power infrastructure powering today's AI, cloud, and high-performance computing facilities.
Why 1500VDC Matters for BESS and Solar-Plus-Storage
The battery energy storage industry is standardizing on 1500VDC system architectures to improve efficiency and reduce balance-of-system costs. This higher voltage requires specialized components rated for DC service — not products retrofitted from AC-rated designs. Marathon's EPDB Series enclosed power distribution blocks and PV-series fuse holders are engineered specifically for 1500VDC applications, providing the DC voltage rating, modular design, and UL/CSA certifications that BESS integrators and solar EPC contractors require.
Bussmann & Mersen Lead Times: The Problem
Extended lead times on Eaton Bussmann and Mersen fuse holders and power distribution blocks — often stretching to 16–24 weeks or longer — create real schedule risk for datacenter and BESS projects where timelines are measured in months, not years. Marathon Special Products offers a direct cross-reference path with significantly shorter lead times, backed by domestic manufacturing and vertically integrated production.
Datacenter Power Distribution: Where Marathon Fits
In a typical datacenter power chain, Marathon products are installed inside the floor-standing Power Distribution Units (PDUs) rated from 150kVA to over 1MVA, Remote Power Panels (RPPs) that distribute power to server racks, modular e-houses and prefabricated power skids built by electrical contractors, and custom power modules for fuel cell and generator set OEMs. Every hyperscale datacenter build in Michigan, Ohio, and Indiana — from the Oracle/OpenAI Stargate project in Saline Township to Meta's 1GW Prometheus facility in New Albany, Ohio — requires thousands of power distribution blocks and fuse holders in its electrical infrastructure.
Fuel Cell & Distributed Generation Applications
Leading fuel cell and distributed generation OEMs like Bloom Energy, Caterpillar, and Rolls Royce use Marathon Special Products components inside their power modules. As datacenters increasingly adopt on-site power generation — from solid oxide fuel cells to natural gas gensets to hydrogen-ready systems — the demand for high-quality, American-made power distribution components inside these modules continues to grow.
About Applied Control Inc.
Applied Control Inc. (ACI) is the authorized Marathon Special Products manufacturers' representative covering Michigan, Ohio, and Indiana. Our team provides application engineering support, cross-reference assistance, and local inventory access for datacenter contractors, panel builders, OEMs, and electrical distributors throughout the region. Contact us for cross-references, pricing, and technical support on any Marathon Special Products application.