Eaton Magnum PXR User Manual

23
User Manual MN013016EN
Effective July 2022
Magnum PXR and Power Defense SB low
voltage power circuit breakers user manual
EATON www.eaton.com
Top
“V” shaped
plates
“V” shaped
plates
Top plate for
arcing contact
Figure 29. Arc plate assembly
Electronic tripping system
The Magnum PXR and PD-SB circuit breaker uses the Power Xpert
Release (PXR) trip unit. The trip unit is available in multiple styles
with advanced features. For details pertaining to the trip units
available and how to configure them for your application, please refer
to the User Manual, publication MN013015EN.
There are 5 parts to the tripping system
•
Current sensors
•
Frame module
•
Trip unit
•
Trip actuator
•
Voltage module (PXR 25 only)
Figure 30. Pictorial diagram of typical current sensing,
processing, and tripping system
Microprocessor-based trip unit
The PXR trip unit has features and flexibility that allow configuration
for a wide variety of protection applications. The PXR trip unit
is available in multiple models for the Magnum PXR and PD-SB
circuit breaker family. The models range from simple current
protection devices through more complex protection, metering
and communication functionality. Communication options support
integration into a variety of systems to monitor performance.
Advanced metering of currents, voltages, power and energy allows
evaluation of real-time energy use.
Voltage
module
&
frame
module
Trip
unit
Trip
actuator
A B
Current
sensors
C

Eaton Magnum PXR Specifications

General

Brand	Eaton
Model	Magnum PXR
Category	Circuit breakers
Language	English