Circuit breakers

Experience the superior quality of the Eaton Series C Molded Case Circuit Breaker. The Series C circuit breaker is ideal for panelboards, switchboards, motor control centers, and busway applications. Choose from a premier selection of trip units including thermal magnetic, electronic, and magnetic only switches. Available for systems up to 600 VAC or 250 VDC with current ratings up to 800A.

Contact me about this product

Molded case circuit breaker line card

Back to search

Live chat

Overview Models Resources Support

Have you seen the Power Defense MCCB?

The Power Defense molded case circuit breaker provides all of the benefits available with Series C along with the latest breaker technology. Take a look.

Power Defense MCCB

Predict and stop power failures before they happen

The latest circuit breaker technology, which is built into Power Defense MCCBs, delivers predicitive diagnostics that help you better uncover, diagnose and stop power outages before they happen.

Take a look at the pre-recorded webinar or download the whitepaper to learn how you can better leverage the power of intelligent systems.

Download the whitepaper

Watch the webinar

Safety

Arcflash reduction

Reliability

Instantaneous trip units

Core features of Series C molded case circuit breakers

Patented contact design features high-speed “blow-open” action, resulting in superior performance.
A large domestic installed base ensures familiarity, and acceptability throughout the U.S.
An extensive line of heavy duty external accessories are ideal for harsh and hazardous environments.

Authentic circuit breakers, no exceptions

Before your next installation, understand the risks and dangers associated with counterfeit, surplus and reconditioned molded case replacement circuit breakers. At Eaton safety is our highest priority, and we are committed authenticity when a replacement circuit breaker is required. Get authentic breakers at low prices.

Learn more about authentic breakers

Faster than instantaneous

Eaton's electronic trip units are available with Series C molded case circuit breakers. Electronic trip units are designed to meet a broad range of monitoring and protection requirements. Curve shaping, zone selective interlocking, arcflash reduction, diagnostics, and system monitoring and communications are all features available by selecting the appropriate trip unit for the specific requirement.

Start authenticating your molded case circuit breakers today.

Start now

Eaton's molded case circuit breaker portfolio

Eaton manufactures a variety of molded case circuit breakers designed for use in multiple industries and conditions. Take a look at our MCCB portfolio.

Molded case circuit breakers

Specifications

Filters

Search within these values

Try another search

Your search "" did not match any documents or products.

Download Links

CAD drawings: Series C

View the CAD drawings

Application notes

Circuit breaker selective coordination tables - IA01200002E

Industry application paper describing circuit breaker selective coordination tables for low voltage breakers and low voltage distribution assemblies.

(PDF 517 KB , 01/25/2024)
Consulting application guide - molded case circuit breakers

Molded case circuit breakers & enclosures

(PDF 10 MB , 04/30/2018)

Brochures

Catalogs

Molded case circuit breakers, Volume 4, Tab 2 - CA08100005E

This is the catalog describing Power Defense, Series G, Series C, specialty breakers and handle mechanisms.

(PDF 16 MB , 06/20/2025) Updated

Certification reports

Competitive comparisons

Molded case circuit breakers arc flash PPE categories

Molded case circuit breakers arc flash PPE categories

(PDF 17 KB , 09/08/2021)

Installation instructions

Manuals and user guides

Product specification guides

Low voltage circuit breakers guide specification

This is the guide specification describing low voltage power circuit breakers, insulated case circuit breakers, and molded case circuit breakers.

(DOCX 1 MB , 02/03/2022)

Technical data sheets

K-frame 310+ electronic trip unit

Series C K-frame (KE) 310+ electronic trip unit

(PDF 222 KB , 06/20/2019)
L- and M-frame 310+ electronic trip unit

Series C L- and M-Frame (LD and MDL) 310+ Electronic Trip Unit

(PDF 108 KB , 06/20/2019)

Time current curves

RD-Frames with Digitrip 510/610/810 and OPTIM Trip Units

(PDF 599 KB , 04/22/2019)
Series C F-frame circuit breaker time current curves

Digitrip 310+ Electronic Trip Unit; Single-pole thermal-magnetic trip units

(PDF 8 MB , 04/20/2022)
Series C: 1 Pole GHB and GHC

Series C: 1 Pole GHB and GHC

(PDF 2 MB , 04/22/2019)
Series C: 2 Pole & 3 Pole GD, GHB, GHC, AND GPS

Series C: 2 Pole & 3 Pole GD, GHB, GHC, AND GPS

(PDF 31 KB , 04/22/2019)
Series C: JD-Frame

AB DE-ION Series C: JD, JDB, JDC, and HJD

(PDF 563 KB , 04/22/2019)
Series C: KD-Frame

Series C: CHKDB, CKD, CKDB, DK, HKD, HKDB, KD, KDB, and KDC

(PDF 2 MB , 04/22/2019)
Series C: LD-Frame

Series C: CHLD, CHLDB, CLD, CLDB, CLDC, CLDCB, HLD, HLDB, LD, LDB, LDC, and LDCB

(PDF 3 MB , 04/22/2019)
Series C: MDL-Frame

Series C: CHMDL, CMDL, HMDL, HMLDB, KMDL, MDL, and MDLB

(PDF 1 MB , 04/22/2019)

White papers

Tap rules for molded case circuit breaker terminals

Molded Case Breaker

(PDF 95 KB , 12/31/2009)

Contact me form

Email: Technical support

trc@eaton.com

Phone: Technical support

For technical support call 877-386-2273 then select OPTION 2 then OPTION 2 and OPTION 2 one more time.

Locate a channel partner

Eaton is an intelligent power management company dedicated to improving the quality of life and protecting the environment for people everywhere. We are guided by our commitment to do business right, to operate sustainably and to help our customers manage power ─ today and well into the future. By capitalizing on the global growth trends of electrification and digitalization, we’re accelerating the planet’s transition to renewable energy and helping to solve the world’s most urgent power management challenges.

Series C molded case circuit breaker