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W-VACiMB FIXED SECONDARY
TERMINAL BLOCK OEM
CONVERSION TYPE #1
PUSH ON TYPE TERMINAL BLOCK
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PLEASE READ
These instructions are provided so that an OEM can officially convert a
W-VACiMB Mining Breaker to an approved secondary variation. This
variation is required for some OEM’s for them to be in compliance with
end customer needs. The OEM is authorized to do the conversion per
this process and to still have the proper warranty protection.
This procedure is intended to show the necessary steps to remove the
standard secondary connector and replace it with a Push-On type
terminal block that contains the following connections (Refer to Figure
29):
o Spring Charging Circuit
Uses secondary connector pins 25 & 35.
o (1) Shunt Open Circuit (Trip Coil)
Uses secondary connector pins 31& 30.
o (1) Shunt Close Circuit
Uses secondary connector pins 4 & 14.
o Control Under Voltage Release (UVR) Circuit
Uses secondary connector pins 2 & 44.
This requires the UVR option to be installed.
o (2) Normally Open Relays
Relays are open when breaker is open.
1
st
Relay uses secondary connector pins 7 & 17.
2
nd
Relay uses secondary connector pins 9 & 19.
o (1) Normally Closed Relay
Relay is closed when breaker is open.
Uses secondary connector pins 23 & 33.
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Due to jumping connections in this procedure, the three relays will
have the same voltage/supply as the charge motor. Similarly, the UVR,
Close Coil, Charging Motor, and Trip Coil will share a common return
(See Appendix A). You may choose to not install the jumpers for more
circuit flexibility.
Use appendices A through F for additional information.
TOOLS REQUIRED
Narrow & Thin Flathead Screwdriver
o To be used on DIN-Rail Mountable Terminal Blocks
Male Pin Remover
8 mm Wrench
10 mm Wrench
Wire Strippers
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Parts List
Quantity
Item
Supplier
Part
Number
Cost
1
DIN Rail
www.monti-inc.com
68B7301
$3.90 per 50
4
Red Terminal Block
www.ab.com
1492-J4-RE
$1.01 Each
4
White Terminal Block
www.ab.com
1492-J4-W
$0.93 Each
6
Gray Terminal Block
www.ab.com
1492-J4
$0.96 Each
2
Four-Pole Center Jumper
www.ab.com
1492-CJJ6-4
$2.25 Each
4
Gray Terminal Divider
www.ab.com
1492-EBJ3
$0.66 per 50
2
End Cap
www.ab.com
1492-EAJ35
$3.49 Each
3 Feet
Translucent Wire Sleeving
www.McMaster.com
7432K741
$8.97 per foot
5
Zip Tie
www.McMaster.com
7130K19
$3.78 per 100
5
Zip Tie Holder
www.McMaster.com
7566K62
$11.32 per 50
8 Inches
3M Fire & Arc Protect Tape
Roll
www.McMaster.com
77255A4
$28.28 per 20 feet
1
3M Electrical Tape Roll
www.McMaster.com
76455A21
$2.03 per 20 feet
Monti Contact Info:
Nick LaVigne nickl@monti-inc.com 864-323-0444
104 Airport Industrial Road, Greenwood, SC 29649
Red Terminal
Block
White
Terminal Block
Grey Terminal
Block
Four-Pole
Center Jumper
DIN Rail
See Appendix C
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Gray Terminal
Divider
End Cap
Translucent
Wire Sleeving
Zip Tie
Zip Tie Holder
Electrical Tape
Arc Protect
Tape
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PROCEDURE
Step 1:
Locate the secondary control power wiring terminal box on the
breaker.
Figure 1: Breaker side secondary Terminal Box.
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Step 2:
Insert flat head screwdriver into the two clips to release the front
cover.
Figure 2: Schematic of the how to remove the front cover on the
secondary.
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Step 3:
Using the male pin remover, take out each pin. This can be
accomplished by pressing the male pin remover into a pin slot and
pushing hard to unseat the pin. Once the pin has been unseated,
push from the opposite side of the secondary connector to pull the
pin out of its slot. Repeat for ALL pins (more figures on next page).
Figure 3a: Line up the male pin remover with a pin.
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Figure 3b: Press the male pin remover in hard to unseat the pin.
Figure 3c: Once unseated by the male pin remover, push on the pin
from the opposite side to get the pin out of the slot. Repeat for all
pins.
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Step 4:
Once all pins have been taken out of their slots, remove the
secondary connector and rubber tubing. Discard if desired.
Figure 4: Remove the gray rubber tubing and secondary connector,
they will not be used.
Rubber Tubing
Secondary Connector
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Step 5:
Separate the (14) wires needed for the secondary terminal block from
the rest of the wires and set them aside. See appendix A for a listing
of the necessary wires.
Figure 5: Separating the (14) needed wires.
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Step 6:
Pull the unnecessary wires through the hole in the top of the
breaker. These wires will be secured inside the breaker in the
proceeding steps.
Figure 6: Pull out the unnecessary wires.
14 Used Wires
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Step 7:
Wrap about (22) inches of transparent protective covering around
these unnecessary wires. These wires that are unused will be
secured inside of the breaker.
Figure 7: Transparent protective wiring cover.
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Step 8:
If too long, cut the transparent protective wiring cover two inches
from the end of these unnecessary wires.
Figure 8: Removal of excessive wiring cover.
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Step 9:
Cut an 8 inch section of the fire retardant arc protective tape.
Figure 9: Cutting an 8 inch section of arc protective tape.
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Step 10:
Wrap the arc protective tape around the exposed portion of the
unused wires. Then, secure this protective tape with the electrical
tape.
Figure 10: Wrapping the unused wires in electrical tape.
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Step 11:
Wrap the unused wires completely with electrical tape.
Figure 11: Unused wires completely covered.
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Step 12:
We will now secure the unused wires inside the breaker. Place (2)
cable tie holders on the inside wall of the breaker (spring side).
Position them about three inches from each other and a half inch
from the edge.
Figure 12: Placement of cable tie holders.
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Step 13:
Insert cable ties through the inslots of the tie holders to secure the
unused wires.
Figure 13: Securing of the unused wires.
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Step 14:
Place another cable tie holder as shown closer to the back of the
breaker to hold the end of the unused wire bundle. Zip tie the bundle
to the cable tie holder.
Figure 14: Securing of the wires to avoid interference with spring.
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