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What’s the difference?

HMCPHigh Interrupting

Motor Circuit Protector

MPCBMotor Protection

Circuit Breaker

• The HMCP is designed to provide short circuit (magnetic)

protection and a disconnect for a motor circuit. It is

designed to be used with a contactor (to start/stop the motor)

and an overload relay (to protect from over current)

• The MPCB is designed to provide short circuit (magnetic)

protection, a disconnect and OVERLOAD RELAY

protection all in one device.

• Series C

GMCP Frame (3-63A)

HMCP Frames (3-1200A)

• Series G

HMCPE Frames (3-100A)

HMCPJ Frame (250A)

HMCPL Frame (600A)

• FDMP Frame (40-205A)

• JGMP Frame (50-250A)

• LGMP Frame (250-600A)

Short Circuit Current Ratings with Eaton Motor Starters

• Combination Ratings up to 100KA (with Freedom Series)

• High Fault Ratings up to 65KA (with XT Series)

• High Fault Ratings up to 65KA(with XT Contactors)

Standards and Certifications

• UL 489 Recognized device that requires further listing with

a specific contactor and overload relay for proper

application. (UL Listed with Eaton Motor Starters)

• CSA C22.2 No. 5.1

• IEC 157-7

• UL 489 Listed Circuit Breaker that can be used with any

controller without further testing or listings.

• CSA C22.2 No. 14

• IEC 60947-2, 60947-4

The Bottom Line

Both are top-quality products ideally suited for their target applications!

Eaton CorporationElectrical Sector1000 Cherrington ParkwayMoon Township, PA 15108United States877-ETN-CARE (877-386-2273)Eaton.com

© 2009 Eaton CorporationAll Rights ReservedPrinted in USA

June 2010, V1

• Adjustable Trip Settings ( in multiples of the continuous

current rating) allows for customized motor protection

• Maximum Setting of 13X FLA

• Used with Starters Size 0-8

• Transient inrush trip suppression to sustain high inrush on

very first cycle (included on units used with starters up to

size 4)

• Eliminates the need for an overload relay which reduces

panel size and heat generation

• Selectable Trip Class:

FD Frame – Class 5, 10, 20, 30

JG/LG Frames – Class 10, 15, 20, 30

• Phase Unbalance and Phase Loss Protection

• Field Installable Accessories (JG, LG Frames)

• High Load Alarm Status Indicator (JG, LG)

• Pre-detection Relay (opens contactor instead of breaker on JG, LG)

What is the major difference between the two products?

Product Features and Benefits

Product Offering