Eaton Magnum PXR Technical Product Guide

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Magnum PXR accessories
MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com
4
Undervoltage release (UVR)
The undervoltage release is an optional device on both
manually and electrically operated circuit breakers. It
opens the breaker instantaneously when its supply
voltage falls to between 35–60% of rated voltage. If the
release is not energized to 85% of its supply voltage, the
circuit breaker cannot be closed electrically or manually.
A time delay module is available for the 120 Vac and 240
Vac UVRs. Refer to the time delay undervoltage module
section.
Table 14. Undervoltage release ratings
Control
voltages
Operational
volagte range
85 -110%
Dropout
voltage range
30-60%
Inrush/continuous
power consumption
Opening
time (ms)
Kit catalog
number
24 Vdc 20-26 Vdc 7-14 Vdc 250 W/18 W 70 MUVRC
32 Vdc 27-35 Vdc 10-19 Vdc 275 W/15 W 70 MUVRG
48 Vdc 41-53 Vdc 14-29 Vdc 275 W/18 W 70 MUVRH
60 Vdc 51-66 Vdc 18-42 Vdc 275 W/18 W 70 MUVRS
110-125 Vdc 94-138 Vdc 33-75 Vdc 450 W/10 W 70 MUVRE
220-250 Vdc 187-275 Vdc 66-150 Vdc 450 W/10 W 70 MUVRF
110-127 Vac 94-140 Vac 33-76 Vac 450 VA/10 VA 70 MUVRA
208-240 Vac 177-264 Vac 62-144 Vac 400 VA/10 VA 70 MUVRR
380-415 Vac 323-457 Vac 114-249 Vac 480 VA/10 VA 70 MUVRX
480 Vac 408-528 Vac 144-288 Vac 400 VA/10 VA 70 MUVRJ
600 Vac 510-660 Vac 180-360 Vac 400 VA/10 VA 70 MUVRK
Figure 44. Undervoltage release
Figure 45. All three accessories (ST, SR, UVR) installed

Eaton Magnum PXR Specifications

General

Brand	Eaton
Model	Magnum PXR
Category	Circuit breakers
Language	English