Eaton CH42B3225R Main Breaker Loadcenter - UL 67
Part Number: CH42B3225R
Quick Summary
Eaton CH42B3225R is a main breaker loadcenter designed for three-phase industrial panels. This configuration combines high-capacity distribution with robust protection to support mid-to-large automation installations. Engineers often face space constraints, wiring complexity, and compliance risk when expanding electrical distribution; this model helps address those challenges with a compact footprint and clear assembly options. With UL 67 and UL 50 listings and a rugged NEMA 3R metallic enclosure, it delivers proven safety and reliability in harsh environments. Its 225 A rating, 42 circuits, and copper bus enable scalable power management, reducing the need for multiple feeders and simplifying maintenance, while compatible CH main breaker kits support future expansions.
Product Information
Extended Description
CH42B3225R Eaton: Eaton CH main breaker loadcenter,Standard,Main breaker,225 A,L,Copper,NEMA 3R,Metallic,10 kAIC,CC,42 Circuits,42 Spaces,Four-wire,Three-phase,#2/0 AWG-300 kcmil,Overhead,Csh2125n, csh2150n, csh2200n
Product Name
Eaton CH main breaker loadcenter
Catalog Number
CH42B3225R
UPC
782113098333
Product Length/Depth
39 in
Product Height
5.19 in
Product Width
14.31 in
Product Weight
48.3 lb
Warranty
Limited lifetime
Certifications
UL 67 UL 50
Catalog Notes
Furnished with hub closure plates.
Special features
Standard
Type
Main breaker
Amperage Rating
225 A
Bus material
Copper
Main circuit breaker
CC
Number of circuits
42
Number of spaces
42
Phase
Three-phase
Wire size
#2/0 AWG-300 kcmil
Feed type
Overhead
Main breaker kit
Csh2125n, csh2150n, csh2200n
Box size
L
Enclosure
NEMA 3R
Enclosure material
Metallic
Interrupt rating
10 kAIC
Number of wires
4
Residential and Light Commercial, Load centers and Circuit Breakers, Volume 1 Tab 1
AFCI Educational Video
Eaton Specification Sheet - CH42B3225R
Eaton type CH circuit breaker limited warranty June 2024
Feature: 225 A main breaker rating → Business Impact: Supports high-demand loads without overfusing panels, reducing subfeed requirements and enabling centralized protection in a single enclosure. Application: Mid-to-large manufacturing lines and automation cells. Feature: 42 circuits and 42 spaces → Business Impact: Flexible, ample distribution for complex control architectures, lowering the risk of overloading individual sections. Application: Panel boards for multi-machine cells and process lines. Feature: Copper bus → Business Impact: Lower electrical resistance and heat generation improve uptime and efficiency. Application: Harsh environments where consistent fault current handling is critical. Feature: NEMA 3R metallic enclosure → Business Impact: Weather and corrosion resistance, longer service life, and easier outdoor deployment. Application: Outdoor installations and exposed industrial spaces. Feature: Overhead feed and CH main breaker kit compatibility (Csh2125n, csh2150n, csh2200n) → Business Impact: Simplified wiring, faster install, and scalable upgrades. Application: Retrofit projects and new builds requiring future expansion. Feature: Hub closure plates included → Business Impact: Maintains enclosure integrity, minimizes dust ingress, and supports compliant installations. Application: Cleanroom-adjacent facilities and dusty environments with reduced maintenance needs.
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FAQs
To ensure seamless integration, verify the panel is a compatible CH main breaker loadcenter, confirm overhead feed compatibility, and use the CH main breaker kit options Csh2125n, Csh2150n, or Csh2200n. The unit ships with hub closure plates to maintain enclosure integrity and simplify wiring during retrofit or new installations.
The CH42B3225R delivers a 225 A amperage rating, supports 42 circuits and 42 spaces, uses copper bus, and carries a 10 kAIC interrupt rating. It is designed for three-phase systems with overhead feed, a NEMA 3R metallic enclosure, and a 39 inch depth with overall compact footprint suitable for industrial environments.
Ideal for mid-to-large automation panels, manufacturing lines, and process control systems requiring robust three-phase distribution. Its 225 A rating and 42 circuit capacity support complex machine libraries, while the rugged enclosure and high interrupt rating help meet uptime and safety requirements in factory floors and outdoor installations.
This Eaton loadcenter is UL listed with certifications UL 67 and UL 50 and features a NEMA 3R metallic enclosure. These certifications provide proven safety, reliability, and environmental resistance, aligning with industry standards for modular distribution equipment used in commercial and light-industrial settings.
The CH42B3225R combines a long-lasting metallic enclosure, hub closure plates, and compatibility with CH breaker kits for future expansion, reducing downtime and replacement costs. Its copper bus and high interrupt rating improve reliability under fault conditions, delivering lower lifecycle maintenance costs and a clearer path to scalable automation investments.