MFJ | 1117 | manual | MFJ 1117 - HIGH CURRENT DC MULTI-OUTLETS Manual

MFJ 1117 High Current DC Outlets
Thank you for purchasing the MFJ-1117 High Current DC Outlets. The MFJ-1117 is very versatile
in allowing you to connect to as many as four (4) different HF or VHF radios at the same time. The
MFJ-1117 alleviates the problems of multiple radio connections to the same DC power supply
terminals. Posts A and B each has a 35 amp fuse individually. Posts C and D are fused with
one 35 amp fuse to handle a combined total of 35 amps.
Note: While you may connect up to four (4) radios to the MFJ-1117, you may not draw more than
35 amps at one time.
The MFJ-1117 is not a power supply. The output voltage and current of the MFJ-1117 depend on
the output voltage and current of the main DC power supply that the MFJ-1117 is connected to.
Posts A and B can handle up to 35 amps each. Post C and D can handle 35 amps in
For example:
WARNING: The MFJ-1117 cannot be used for AC application. The DC output level of each pair
of posts is dependent upon the DC level input going into the MFJ-1117. The
MFJ-1117 does not regulate voltage or power in any way.
Input of 12 VDC, then the output will be 12 VDC.
Input of 6 VDC, then the output will be 6 VDC. Input
of 24 VDC, the the output will be 24 VDC.
The maximum voltage is 24 volts DC at 35 amps.
Connect the two leads of the MFJ-1117 to your DC power supply. The red (+) lead connects to the
positive (+) terminal and the black (-) lead connects to the negative (-) terminal. A ground wire
should be connected to the GND post on the case for safety purposes. Due to the high current
involved, the ground wire should be of appropriate length and gauge for safety to equipment and
CAUTION: Drawing too much current or reversing the positive (+) and negative(-) leads of the
MFJ-1117 will damage your station equipment.
the operator.
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