Eaton Magnum PXR Technical Product Guide

Table of contents
MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com iii
1 Overview of the Magnum PXR low voltage circuit breaker
Breaker overview ......................................................6
Magnum PXR (UL standards) ............................................7
Universal family features ................................................9
PXR overview ........................................................9
Motorized remote racking (MR2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Construction characteristics ............................................11
Rigid frame housing ................................................11
Three piece construction ............................................11
Two-step stored energy mechanism ...................................11
Unsurpassed performance design .....................................11
Value-added features ...............................................12
Front cover features ................................................12
Front cover details .................................................13
Breaker internal features ............................................14
Breaker secondary .................................................15
Breaker mounting configurations ......................................19
Cassettes (available designs) .........................................19
Design configuration flexibility ..........................................20
2 Technical data and ratings
Sizes, dimensions, weights, and configurations .............................22
Magnum PXR ANSI breaker family ratings .................................23
Technical data sheet ..................................................24
Catalog builder .......................................................26
Breaker ..........................................................26
Cassette .........................................................28
Nameplate identification and markings ....................................29
High performance interrupting and withstand levels .........................29
Continuous current ratings .............................................29
3 PXR trip unit and communication modules
Overview of PXR electronic trip units ........................................30
Standards and certifications ............................................30
PXR protection settings/features .........................................30
PXR protection .........................................................31
PXR trip unit module catalog numbers .......................................32
Magnum DS digitrip to Magnum PXR equivalency ..............................32
Trip unit wiring ..........................................................33
Common PXR unit features ................................................34

Eaton Magnum PXR Specifications

General

Brand	Eaton
Model	Magnum PXR
Category	Circuit breakers
Language	English