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60-144 VDC Vehicles (50-150 VDC Power Supply, Screws on Top of Lid)
This option requires DC/DC power supply Honeywell Part no. VX89303PWRSPLY, shown below.
If the DC/DC power supply does not have screws in the top of the lid, see 60-144 VDC Vehicles (50-150 VDC Power
Supply, Screws on Side of Lid) (page 4-34).
Shown With Lid Attached
• Lid is secured with screws on the top of lid.
Shown With Lid Removed
• Input and output connector blocks under lid.
• Two positive (+), negative (-) and ground ( )
connections per terminal block
CAUTION - For installation by trained service personnel only.
CAUTION - The VX89303PWRSPLY power supply is sealed per IPXX. Usage in areas where moisture can affect
the power supply connections should be avoided. The power supply should be mounted in a dry location within
the vehicle or placed in a suitable protective enclosure.
Use caution when routing the power cable. See Power Cable Cautions (page 4-28).
Fuse Requirements
WARNING - For proper and safe installation, the input power cable must be connected to a fused circuit on the
vehicle. If the supply connection is made directly to the battery, the fuse should be installed in the positive lead
within 5 inches of the battery’s positive (+) terminal. The fused circuit requires a maximum time delay (slow blow)
fuse with a current rating as noted below.
•For 60VDC input, use a 6A slow blow fuse that has a DC voltage rating greater than 60VDC.
•For 72VDC input, use a 6A slow blow fuse that has a DC voltage rating greater than 72VDC.
•For 96VDC input, use a 4A slow blow fuse that has a DC voltage rating greater than 96VDC.
•For 108VDC input, use a 4A slow blow fuse that has a DC voltage rating greater than 108VDC.
•For 120VDC input, use a 4A slow blow fuse that has a DC voltage rating greater than 120VDC.
•For 132VDC input, use a 3A slow blow fuse that has a DC voltage rating greater than 132VDC.
•For 144VDC input, use a 3A slow blow fuse that has a DC voltage rating greater than 144VDC.
Note: For North America, a UL Listed fuse is to be used.
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