AMETEK MX Series Rev: AY - Manual (Page 79)

User Manual – Rev AY AMETEK Programmable Power
MX Series 79
3.15 Fuse Box Accessory
An Output Fuse Box (P/N 7003-426-1) is provided with MX systems consisting of more than 2
cabinets. This fuse box provides protection against excessive current circulating between
amplifiers in different chassis in case of a system malfunction.
Each fuse is capable of sustaining up to 125 Arms of AC current, which is the maximum
available current per MX amplifier.
Each fuse box has 9 sets of 3 fuses for phase A, phase B and phase C. Each fuse terminal is
lined up with a strain relief on each side of the box. The outputs from the MX45 cabinets connect
to the “MX 45 SOURCE” side of fuse box. The outputs of the fuse box (marked “JUNCTION
BOX” are normally routed to the 7003-416-1 Junction box (marked “MX SYSTEM OUTPUT”)
where the outputs of the various cabinets are combined for each phase. The load can then be
connected to the “LOAD” side of the junction box.
Note: The Fuse box enclosure must be connected to Earth ground using the provided
ground stud.
Figure 3-22: 7003-426-1 Output Fuse Box
Dimensions 7003-426-1:
W x L x H Chassis 12.125 “ x 16.125” x 4.125” 308 x 410 x 105 mm
Feet height: 0.875 22 mm
Strain relief hole size: 1.5” diameter 38 mm diameter