High-voltage adapter plate fuse box
44
Electrical system
Introduction of smart fortwo electric drive (3rd Generation) • Model Series 451
The high-voltage adapter plate fuse box is
installed on the power electronics control unit
above the electric motor. The adapter plate
serves as a connecting element between the high-
voltage lines and the power electronics control
unit.
It supplies high-voltage electrical consumers
from a central location and protects the corre-
sponding line cross-sections to the on-board
charger, the high-voltage PTC heater and the
electric refrigerant compressor with high-
voltage fuses.
There are three fuses in the high-voltage adapter
plate fuse box to protect the high-voltage on-
board electrical system. The high-voltage fuses
are not accessible and thus not exchangeable.
P54.10-3684-00
1 Electric refrigerant compressor connector
2 On-board charger connector
3 Electric drive motor connector
4 High-voltage battery connector
5 High-voltage PTC heater connector
6 Power electronics control unit connector
7 High-voltage interlock connector
8 Electric drive motor power supply feed con-
nector
F34/6 High-voltage adapter plate fuse box
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