APC MG4-A Leaflet
Module Replacement
1. Verify that all replacement modules have the correct catalog number. The catalog number is
found on the nameplate of each existing and replacement module (see Figure 1) and on the
SPD device nameplate. Use Table 1 to determine the correct replacement catalog number
based on the existing SPD system voltage and peak surge current rating.
SPD device nameplate. Use Table 1 to determine the correct replacement catalog number
based on the existing SPD system voltage and peak surge current rating.
Table 1: Module Replacements
Peak Surge
Current Rating
Catalog Number
Phase A
Phase B
Phase C
120 kA
160 kA
120V
120 kA
PRECAUTIONS
INSTALLATION
RJ45 patch cable connector
7/16 in. socket wrench
Phase A
Phase B
Phase C
Module
LEDs
Module nameplate
Figure 1:SPD Device and Modules, Top View
MP3-A
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
· Apply appropriate personal protective equipment (PPE) and follow safe electrical work
practices. See NFPA 70E.
· This equipment must only be installed and serviced by qualified electrical personnel.
· Turn off all power supplying this equipment before working on or inside equipment.
· Always use a properly rated voltage sensing device to confirm power is off.
· Replace all devices, doors and covers before turning on power to this equipment.
Failure to follow these instructions will result in death or serious injury.
practices. See NFPA 70E.
· This equipment must only be installed and serviced by qualified electrical personnel.
· Turn off all power supplying this equipment before working on or inside equipment.
· Always use a properly rated voltage sensing device to confirm power is off.
· Replace all devices, doors and covers before turning on power to this equipment.
Failure to follow these instructions will result in death or serious injury.
MP3-A
MP4-A
MP4-A
208/120V
MF3-A
MF3-A
MF3-A
160 kA
MF4-A
MF4-A
MF4-A
120 kA
MG3-A
MG3-A
MG3-A
480/277V
208/120V
120V
160 kA
MG4-A
MG4-A
MG4-A
480/277V
160 kA
MH4-A
MH4-A
MH4-A
380/220V
120 kA
ML3-A
ML3-A
ML3-A
600/347V
160 kA
ML4-A
ML4-A
ML4-A
600/347V
System
Voltage
N/A
N/A
80 kA
ML2-A
ML2-A
ML2-A
600/347V
Surge Protective Devices (SPD)
Retain for future use
For technical support, go to www.apc.com/support/contact
WARRANTY
For warranty information about your Surge Protection Device, go to the APC
Choose your part number from among the three categories listed under
Hardwire Surge Suppression. A screen containing information specific to
tab to locate the file containing your warranty.
Web site:
www.apc.com. Choose Products, and then choose Surge Protection
and Power Conditioning. Scroll down to Hardwire Surge Suppression.
your Surge Protection Device is then displayed. Click on the
Documentation