Specifications

Powerpact
®
M-Frame
Molded Case Circuit Breakers
Offering improved performance and efficiency
Powerpact M-Frame Molded Case Circuit Breakers provide improved
performance and a compact solution for up to 800A applications.
They complement the existing Powerpact P- and R-Frame, and
replace the traditional MA/MH Circuit Breakers with smaller footprint
and competitive cost.
Full-Featured Performance
 Approximately 15% smaller installed volume than the MA/MH
Circuit Breakers
 Same dimensions, common mounting, bussing, cabling and door
cut-out as Powerpact P-Frame Circuit Breaker
 Share common accessories with Powerpact P-Frame Circuit
Breaker and can be field installed easily
 Built-in electronic trip unit type ET 1.0 provides better accuracy
over standard thermal-magnetic trip unit
 Fixed long-time and adjustable instantaneous protection
(2 to 10 times nominal Amps rating) is standard on all Powerpact
M-Frame Circuit Breakers
 Connection options, including bus, standard lug, crimp lug and
distribution lug, are available for installation flexibility
 Various padlocking and key-lock options are available to comply
with OSHA requirements
 Dual rated UL489 and IEC 60947-2
 Available 300A, 350A, 400A, 450A, 500A, 600A, 700A and
800A ratings
 Available in 2- and 3-pole unit-mount and I-Line versions
 Two levels of interrupting ratings available
Unit Mount Configurations
I-Line
®
Configurations
Standard
Voltage
(V)
Int. Rating G
(kA)
Int. Rating J
(kA)
UL
240 65 100
480 35 65
600 18 25
IEC Icu/Ics
240 50/25 65/35
415 35/20 50/25
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