Siemens BT300 LonWorks User manual
Installation Instructions
Document No. DPD01160D
December 4, 2019
BT300 HVAC Drives Main Switch
Page 1 of 4
Product Description
The main switch is used for switching off the input
power of the drive. This option is available for frames
FS4-FS7 with Type 12/IP54 protection class and
maximum output current 88A. See Table 1 for more
information. The main switch is both CE and UL
listed.
Product Numbers
See Table 1.
Warning/Caution Notations
WARNING:
Personal injury or loss of life
may occur if you do not follow
the procedures as specified.
CAUTION:
Equipment damage or loss of
data may occur if you do not
follow the procedures as
specified.
CAUTION:
The main switch is a safety device. Do not use
the main switch when the drive is in operation.
NOTE:
An additional auxiliary contact switch is provided
with the main switch option. This contact switch
helps to receive status information of the main
switch for PLC, and so on.
Required Tools
•Phillips head screwdriver
•Flat-blade screwdriver
Expected Installation Time
15 minutes
Item Number DPD01160D
Installation
1. Remove the drive cover.
Figure 1.
2. Remove the two screws from the main
switch and tilt the switch to the left.
Figure 2.
3. Connect motor cable M(see Figure 4).
Tighten the screws according to the
tightening torques in Table 1. Check the
tightening of the factory-installed main
switch cable.
NOTE:
Remember to use the cable grommets
provided with the drive. See Siemens BT300
HVAC Drive Installation Instructions
(DPD01148) for detailed cable installation
instructions.
Document No. DPD01160D
Installation Instructions
December 4, 2019
Page 2 of 4
Figure 3.
4. To attach the cables. fold the cable shield
backwards onto the cable and attach the
cable with a cable clamp on the shield.
NOTE:
See Siemens BT300 HVAC Drive
Installation Instructions (DPD01148) for
detailed cable installation instructions.
Figure 4.
5. Install supply cable Sand connect it to the
main switch (see Figure 5).
NOTES:
1. If possible, protect the cables closest to
the main switch with an insulation tube.
2. See Siemens BT300 HVAC Drive
Installation Instructions (DPD01148) for
detailed cable installation instructions.
Figure 5.
Figure 6. Motor and Supply Cable Installation
as Seen from Above.
6. Attach the main switch screws.
Figure 7.
7. Tighten the supply cable screws according
to the tightening torques in Table 2. Check
the tightening of the factory-installed cable
connection screws on the right side of the
main switch.
Figure 8.
Connecting the data cable
Do one of the following:
•For FS4: Connect Data Cable Dunder the
main switch, and attach it.
•For FS5 through FS7: Connect the data
cable to the terminal around the main
switch.
Document No. DPD01160D
Installation Instructions
December 4, 2019
Page 3 of 4
NOTES:
1. If possible, protect the cables closest to
the main switch with an insulation tube.
2. See Siemens BT300 HVAC Drive
Installation Instructions (DPD01148) for
detailed cable installation instructions.
Figure 9.
Figure 10. Data Cable Installation in FS4
as Seen from Above.
8. Close the drive cover.
Figure 11.
Cable requirements
The following table shows the maximum sizes for the
cables to be used with the main switch.
NOTE:
Only use copper cables with the main switch option,
do not use aluminum cables.
The installation is now complete.
Document No. DPD01160D
Installation Instructions
December 4, 2019
Information in this document is based on specifications believed correct at the time of publication. The right is reserved to
make changes as design improvements are introduced.Product or company names mentioned herein may be the trademarks
of their respective owners. © 2019 Siemens Industry, Inc.
Siemens Industry, Inc.
Smart Infrastructure
1000 Deerfield Parkway
Buffalo Grove, IL 60089-4513
Your feedback is important to us. If you have
comments about this document, please send them
Document No. DPD01160D
Printed in the USA
Page 4 of 4
Table 1. Cable Data for Main Switch Option.
Frame
Size
Type
Maximum Main
and Motor
Cable Size
(Cu)
Main Switch
Screws Tightening
Torque
lbf-in (Nm)
Supply Cable
Insulation Tube Size
Diameter/Length,
In (mm)
FS4
BT300-001X2…
AWG14
7.08
(0.8)
10/70
(2.75/0.39)
BT300-00152…
BT300-002X2…
BT300-003X2…
BT300-00154…
BT300-002X4…
BT300-003X4…
BT300-005X4…
BT300-00754…
FS5
BT300-005X2…
AWG10
7.08
(0.8)
16/80
(3.14/0.62)
BT300-00752…
BT300-010X2…
AWG8
BT300-010X4…
AWG10
BT300-015X4…
BT300-020X4…
AWG8
BT300-003X6…
AWG14
BT300-005X6…
BT300-00756…
BT300-010X6…
FS6
BT300-015X2…
AWG4
17.70
(2)
20/80
(3.14/0.78)
BT300-020X2…
BT300-025X4…
BT300-030X4…
BT300-040X4…
BT300-015X6…
AWG8
BT300-020X6…
BT300-025X6…
BT300-030X6…
AWG4
FS7
BT300-025X2…
AWG2
53.10
(6)
25/0
(3.14/0.98)
BT300-030X2…
BT300-050X4…
BT300-060X4…
BT300-040X6…
AWG4
BT300-050X6…
BT300-060X6…
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