Eaton CVS3125W Molded Case Circuit Breaker - 42 kAIC
Part Number: CVS3125W
Quick Summary
Eaton CVS3125W molded case circuit breaker provides reliable overcurrent protection for low-voltage distribution panels. This device helps prevent nuisance trips and equipment damage that can derail projects and slow production. It is certified to CSA Std. C22.2 No. 5 and UL 489, underscoring compliance with essential electrical codes. The compact CV frame supports installation in crowded panels and tight spaces, while the 125 A rating and 42 kAIC interrupt capacity offer scalable protection for commercial and industrial applications. With a limited lifetime warranty and no-terminal configuration, it delivers predictable performance, reduces maintenance complexity, and lowers total cost of ownership for panel builders, integrators, and end users seeking dependable electrical protection.
Product Information
Extended Description
CVS3125W Eaton: Eaton Type CV Molded Case Circuit Breaker,Molded case circuit breaker,125 A,42 kAIC,Three-pole,#6 - 4/0 Al/Cu,CV,Without terminals
Product Name
Eaton CCV tenant main breaker
Catalog Number
CVS3125W
UPC
786685704135
Product Length/Depth
7.5 in
Product Height
5 in
Product Width
5 in
Product Weight
4.4 lb
Warranty
Limited lifetime
Certifications
CSA Std. C22.2 No. 5 UL 489
Type
Molded case circuit breaker
Amperage Rating
125 A
Circuit breaker frame type
CV
Terminals
Without
Interrupt rating
42 kAIC
Wire size
#6-4/0 AWG Cu/Al
Number of poles
Three-pole
Residential and Light Commercial, Load centers and Circuit Breakers, Volume 1 Tab 1
Eaton Specification Sheet - CVS3125W
125 A Amperage Rating → Business Impact → Application: The CVS3125W handles sizable branch circuits and service entrances without nuisance trips, supporting orderly panel operation and reduced downtime in commercial facilities and light industrial environments. This translates to smoother startup sequences and better coordination with upstream protection devices. 42 kAIC Interrupt Rating → Business Impact → Application: High interrupt capacity minimizes fault energy and arc risk during faults, improving safety and protecting equipment. Ideal for distribution panels in manufacturing lines and data centers where fault currents can spike. Three-Pole CV Frame → Business Impact → Application: Three-pole protection ensures balanced phase interruption across three-phase systems, improving coordination with motors and drives. This is particularly valuable in mechanical rooms and process equipment cabinets where reliable three-phase protection is critical. Without Terminals → Business Impact → Application: Terminal-free design provides flexible field wiring options and simplifies retrofits, enabling faster installations and easier maintenance in existing panels. Compatible with #6-4/0 AWG Cu/Al conductors for versatile wiring strategies. Compact Size and Weight → Business Impact → Application: At 7.5 in L, 5 in W, 5 in H and about 4.4 lb, it fits tight spaces in load centers and switchgear, reducing enclosure footprint and material costs. Certifications and Warranty → Business Impact → Application: UL 489 and CSA certifications validate code compliance and reliability, while a limited lifetime warranty lowers lifecycle costs for OEMs and panel shops.
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FAQs
Yes. CVS3125W uses a CV molded case frame designed for compatibility with Eaton CV panel assemblies. It is specified as without terminals, offering flexible wiring options for field connections using Cu/Al conductors in the #6-4/0 range. This setup simplifies retrofits and new installations in low-voltage distribution systems.
The CVS3125W is rated for 125 A continuous current and 42 kAIC interrupt capacity, three-pole. This means it can safely interrupt high fault currents in three-phase systems while protecting conductors and equipment from overloads, with strong protection for motors and drives in industrial settings.
This device is well-suited for industrial control panels, commercial load centers, and machine enclosures where reliable three-phase protection is required. Its compact CV frame and flexible wiring support efficient installation in crowded electrical rooms and retrofit projects with space constraints.
CVS3125W carries UL 489 and CSA Std. C22.2 No. 5 certifications, confirming compliance with essential U.S. and Canadian electrical standards for molded case circuit breakers and ensuring safe, code-compliant panel protection.
The CVS3125W offers a limited lifetime warranty and robust construction, which translates to lower lifecycle costs through reduced maintenance and fewer replacement events. Its reliable performance minimizes downtime and supports predictable budgeting for panel builders and end users.