Eaton CH42B3225L Main Breaker Loadcenter - UL 50/67

Part Number: CH42B3225L
Manufacturer
Eaton
Part number
CH42B3225L

Quick Summary

Eaton CH42B3225L main breaker loadcenter is a robust three-phase distribution panel for demanding industrial applications. Engineers often struggle with space constraints, complex wiring, and meeting evolving code requirements in compact control rooms. This unit is UL 50 and UL 67 certified, housed in a NEMA 1 metallic enclosure, and backed by a limited lifetime warranty for long-term reliability. With 42 circuits across 42 spaces and a 225 A main, it delivers scalable, code-compliant power distribution for industrial electrical infrastructure, while copper bus and top/bottom feed simplify installation and future expansion.

Product Information

Extended Description

CH42B3225L Eaton: Eaton CH main breaker loadcenter,Standard,Main breaker,225 A,L,Copper,Ch8lf-combination, ch8ls-surface, not included,NEMA 1,Metallic,10 kAIC,CC,42 Circuits,42 Spaces,Four-wire,Three-phase,#2/0 AWG-300 kcmil,Top/bottom
Product Name
Eaton CH main breaker loadcenter
Catalog Number
CH42B3225L
UPC
782113098302
Product Length/Depth
39 in
Product Height
3.88 in
Product Width
14.31 in
Product Weight
47.6 lb
Warranty
Limited lifetime
Certifications
UL 50 UL 67
Catalog Notes
Furnished with hub closure plates.
Special features
Standard
Type
Main breaker
Amperage Rating
225 A
Bus material
Copper
Cover
Ch8lf-combination, ch8ls-surface, not included
Main circuit breaker
CC
Number of circuits
42
Number of spaces
42
Phase
Three-phase
Wire size
#2/0 AWG-300 kcmil
Feed type
Top/bottom
Box size
L
Enclosure
NEMA 1
Enclosure material
Metallic
Interrupt rating
10 kAIC
Number of wires
4
Feature: 225 A main breaker provides strong current handling and overload protection. Benefit: Reduces risk of equipment damage and unplanned downtime, enabling reliable motor and line startup in manufacturing environments. Application: Suitable for large three-phase loads in machine shops and processing plants. Feature: Copper bus material offers superior conductivity and mechanical strength. Benefit: Minimizes voltage drop, improves thermal performance, and extends panel life in continuous operation. Application: Ideal for high-demand distribution panels serving multiple servo systems and CNC equipment. Feature: 42 circuits and 42 spaces across a four-wire, three-phase configuration. Benefit: Maximizes wiring density while preserving organized, serviceable layout and future expansion. Application: Great for mid- to large-scale panels in industrial facilities requiring clean electrical infrastructure. Feature: Top/bottom feed with hub closure plates and NEMA 1 metallic enclosure. Benefit: Eases installation and maintenance, supports code-compliant installations, and provides robust mechanical protection. Application: Practical for restricted spaces and general service entrances in commercial and industrial settings. Feature: 10 kAIC interrupt rating and UL 50/UL 67 certifications. Benefit: Enhanced short-circuit protection and regulatory confidence for critical loads. Application: Suitable for industrial panels where safety and compliance are non-negotiable priorities. Insight: The CH42B3225L lineup aligns with copper-bus architecture and standardized enclosure options, enabling straightforward upgrades or retrofits in evolving automation environments. This reduces downtime during panel modernization and supports ongoing productivity improvements.

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FAQs

The CH42B3225L is designed for three-phase systems with a top/bottom feed, four-wire configuration, and a NEMA 1 metallic enclosure. It supports #2/0 AWG up to 300 kcmil wiring, a 39 inch depth, and a footprint that fits standard electrical rooms. When installing, ensure proper clearance for service access, confirm compliance with UL 50/UL 67 requirements, and use hub closure plates as provided to maintain enclosure integrity. This setup minimizes heat buildup and supports safe, scalable expansion as loads evolve.
The CH42B3225L carries UL 50 and UL 67 certifications, indicating suitability for power distribution enclosures and electrical installations. It features a 10 kAIC interrupt rating for enhanced short-circuit protection and is built in a NEMA 1 metallic enclosure for indoor, dry environments. These certifications help ensure regulatory compliance, safer operation, and reduced risk of accidental faults in manufacturing lines and process facilities.
Yes. With a 225 A main breaker and 42 circuits/spaces, the CH42B3225L is designed to distribute three-phase power efficiently to multiple loads. Copper bus reinforces current-carrying capacity and reliability, making it suitable for motors, drives, and other high-demand automation equipment. Its four-wire configuration supports modern control schemes while allowing straightforward integration with existing plant infrastructure.
Key installation advantages include the top/bottom feed arrangement simplifying wiring entry and trenching, hub closure plates that preserve enclosure integrity, and a durable NEMA 1 metallic enclosure for indoor protection. The unit’s 39 in depth and 14.31 in width balance space efficiency with accessible wiring management, reducing maintenance time during routine inspections and panel upgrades.
The CH42B3225L delivers predictable performance with a durable copper bus, extensive circuit capacity, and a robust 225 A main breaker, reducing downtime and replacement frequency. The limited lifetime warranty adds long-term protection against manufacturing defects, while UL certifications and a modular 42-space layout simplify future expansions or retrofits. Overall, the panel lowers lifecycle costs by improving reliability, reducing service calls, and enabling scalable automation growth.