Users Manual Chapter 5

92 Thor VM3A Vehicle-Mounted Computer
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).
Fuse Requirements for 50-150 VDC Power Supply, Screws on Top of Lid
For all voltages, use the 3A fuse from the kit or a slow blow fuse that has a DC volt-
age rating greater than the vehicle input voltage.
Note: For North America, a UL Listed fuse is to be used.
Power Cable Identification for 50-150 VDC Power Supply, Screws on Top of Lid
The DC power cable is included with the dock:
Shown with Lid Attached Shown with Lid Removed
Lid is secured with screws on the side of lid. Input and output connector blocks under lid.
Two positive (+), negative (-), and ground ( )
connection per terminal block.
Caution: For installation by trained service personnel only.
Caution: 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.
Caution: Use caution when routing the power cable. See 12-48 VDC Vehicles
(10-60 VDC Direct Connection).
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. Use
VM3055FUSE (or equivalent) to install the fuse as shown below: