Eaton HM25400-3CR Modular Fuse Block - UL Listed
Part Number: HM25400-3CR
Quick Summary
The Eaton HM25400-3CR modular fuse block is a practical solution for high-current protection in electrical switchgear and distribution panels. Many engineers struggle to fit three-pole protection into limited spaces while meeting fast-acting protection requirements. UL Listed and CSA Certified devices ensure compliance across North American control panels, while RoHS supports sustainable design. This HM25400-3CR module helps reduce panel footprint and simplify maintenance, delivering reliable protection at 225–400 A and 250 V, with a 10 kA short-circuit rating. Its modular design aligns with evolving panel standards, enabling rapid changes, easier sourcing of compatible fuses, and lower total cost of ownership over the life of the equipment. This combination of certifications and ratings makes it suitable for control panels in industrial settings demanding reliability and compliance.
Product Information
Extended Description
HM25400-3CR Eaton: Eaton Bussmann series HM modular fuse block, CR, 225-400 A, Three-pole, Class H, Class K, 10 kAIC, 250 V
Product Name
Eaton Bussmann series HM modular fuse block
Catalog Number
HM25400-3CR
UPC
051712386937
Product Length/Depth
1.75 in
Product Height
4 in
Product Width
9.5 in
Product Weight
6.68 lb
Warranty
Not Applicable
Compliances
RoHS Compliant
Certifications
Contact Manufacturer UL Listed CSA Certified
Amperage Rating
225-400A
Short-circuit rating
10 kA
Voltage rating
250 V
Number of Poles
Three-pole
Class
Class K Class H
Special features
CR
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Bussmann series Fuseology
Eaton Specification Sheet - HM25400-3CR
Feature: High current rating and broad voltage capability. Business Impact: Enables protection for motors and feeders up to 400 A at 250 V, reducing the need for multiple devices and simplifying protection schemes. Application: Three-pole protection in large control panels and switchgear. In practice, engineers can design lean enclosures without compromising safety or performance. Feature: 10 kA short-circuit rating. Business Impact: Supports IEEE and NEC fault tolerance requirements, minimizing conductor and component damage during faults. Application: Protective blocks for critical motor drives and process lines where fault currents can exceed standard levels. Feature: Class H and Class K compatibility with CR feature. Business Impact: Offers selective coordination and fast-acting clearing with standard fuse types, improving system reliability and maintenance predictability. Application: Industrial automation panels requiring precise fuse selection and compliance with industry standards. Feature: RoHS compliant + UL Listed + CSA Certified. Business Impact: Ensures environmental compliance and regulatory acceptance across global sites, reducing procurement hurdles and certification costs. Application: Panels in regulated industries such as food & beverage, water treatment, and manufacturing. Feature: Compact footprint and defined form factor. Business Impact: Saves panel space and simplifies installation in tight cabinets, lowering engineering time and retrofit costs. Application: Modernizing legacy panels or designing new compact electrical rooms. Feature: Clear product identity with complete documentation. Business Impact: Quick access to the Eaton specification sheet and catalogs facilitates fast part validation and future maintenance. Application: OEMs, distributors, and service teams during spec reviews and spares management.
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FAQs
The HM25400-3CR is a three-pole modular fuse block designed for control panels and switchgear requiring 225-400 A protection at 250 V. Its HM Bussmann series compatibility ensures straightforward integration with standard Bussmann fuses and existing Eaton HM assemblies, supporting seamless upgrades in both new builds and retrofits.
Key ratings include an amperage range of 225-400 A, a short-circuit rating of 10 kA, and a voltage rating of 250 V. The device supports three poles and is suitable for Class H and Class K fuse configurations, with CR capability to support selective coordination and fast fault clearing.
Industries with robust control panels and motor feeder protection benefit most, including manufacturing, process industries, water treatment, and food and beverage. The RoHS compliance and UL Listed/CSA Certified status facilitate cross-site deployments in regulated environments while meeting global standards.
The HM25400-3CR carries UL Listed and CSA Certified certifications and RoHS compliance, ensuring regulatory acceptance in North American panels and alignment with environmental requirements. The combination supports safer, compliant design and easier supplier qualification.
Its compact footprint, single-module protection, and compatibility with existing HM fuses reduce panel space and simplify part sourcing. The 10 kAIC rating enhances fault resilience, decreasing downtime, while standardization with UL/CSA certifications reduces certification and maintenance overhead across multiple sites.