BÜTTNER ELEKTRONIK – Batt erie-Control-Booster MT BCB 30/30, MT BCB 40/40, MT BCB 60/40
12
Option:
Rec.
Cross-section
START, COM
and BORD
min. 16 mm
2
to D+
Si.
5A
Si.
I
Si.
II
chassis
Batteryseperator
relay
D+
+B1
+B2
6-10 mm
2
(present)
negativ/ground
chassis
To be used for
mains detection
signal, for example
CBE electrics
(conn. J10), if charger
will be de-activated
NOTE:
The fuses protect the
cabling (cable fire), therefore
place them as close as
possible to the batteries.
Temperature Sensor
negativ/ground
chassis
negativ/ground
chassis
Central electrics with
integrated separator
relay and mains
charger e.g.
Schaudt EBL,
CBE, NE, Toptron
General all negative wirings
on negative-terminal of
BORD-Battery!
-Batt.
separate wiring acc.
table 1, if needed
Remark:
De-nude cable ends only:
- Signal cable 0.75 – 1.5 mm
2
: 9 mm
- Charging cables – 12 mm
Don’t use bootlace ferrules!
30
85
black
87a 87 orange
86
Installation type 3b – Special case: BCB 60/40 for recreational vehicles with central
electric station (Schaudt, CBE, NE, Toptron)
The BCB 60/40/40 with its power of 60A is too strong for charging while driving for the installation
according to installation type 3a and typically present wiring in 10 mm
2
and maximum load capa-
city of the integrated isolating relay of the EBL.
It therefore needs to be installed parallel to the central electrical station with appropriately si-
zed cable cross-sections (min. 16 mm
2
). When driving, however, the starter battery must not be
connected to the board battery via the isolating relay. This would short-circuit the START input and
the BORD output on the BCB and thus no charging power would be available !
