
260
4
Issue C
%
Germany (0 91 87) 10-0 – USA (847) 827-7600 – UK (01296) 420336 – www.etacbe.com
Battery Isolation Switches E-1073-437 and E-1073-921/-922
Typical applications
For road vehicles, e.g. buses and coaches
Series E-1073-1102-437-B3-K12-07-Si01-240 A
In this application, the E-T-A combined battery switch/circuit
breaker has several functions:
G
High performance circuit breaker rated at 40 A, providing
battery and cable protection from overloads and short circuits.
G
Isolation switch, for ON/OFF operation (e.g. for main system
disconnection).
G
Remote control via external, low-current circuit.
G
Untervoltage protection from battery deep discharge should
electrical loads be left on.
G
Early under voltage signalisation via a warning lamp
(undervoltage status output), located as required.
G
Undervoltage operation can be overridden if required.
G
Auxiliary contact to disconnect the generator field.
G
Reverse polarity protection through immediate disconnection
of the entire vehicle electrical system if the battery is incorrectly
connected.
These functions allow the number of components and cables
required to be reduced, with significant space and weight saving
benefits.
For rail vehicles, e.g. underground carriages
Series E-1073-1233-437-K60-06-Si01-200 A
In this application, the E-T-A combined battery switch/circuit
breaker has two functions:
G
High performance circuit breaker providing battery and cable
protection from overloads and short circuits.
G
Isolation switch between battery and loads.
In this application, an ON/OFF remote control switch can be
provided in both the first and last carriages. This will enable all
batteries to be disconnected from the power distribution system
by the operation of one control, irrespective of its location. In the
same way, all batteries can be re-connected by the operation of a
single control switch.
This is extremely helpful during coupling/de-coupling of carriages
for example. In addition the E/A test input permits the operation of
individual battery switch/circuit breakers during maintenance.
ON/OFF
switch
series 437
Electronic control unit
U-OFF UST.
I >
v
II
11
23
13
FA
b
a
FE
3
4
L13
L12
L11
FA
ON/OFF
L
L
L
L
battery
I
+
12
1
2
+US1
4
E/A
U-AUS
6
7
8
9
10
-UB
24
14
L
+US1
L
L
CB
6
5
L1 red
+UB
L
-UB
+
UVP OFF
undervoltage status
output max. 2 W
UST.
terminal strip
d 125 A
≥
g
d
85
86
g
30
87
87a
31
Kl. 15
-
Kl. 15
E-T-A E-1073-1233-437-
Control
II
B
–
I
3
4
5
6/7
8
9
10
+UB
-UB
ON/OFF
+US1
T-OFF
+
T-ON
+US2
I >
Battery + E-1073-1233-437-
underground carriage
+
–
L
+
l
+
–
ON/OFF test
OFF
ON
c
c
c
E-T-A E-1073-1233-437-
Control
II
B
–
I
3
4
5
6/7
8
9
10
+UB
-UB
ON/OFF
+US1
T-OFF
+
T-ON
+US2
I >
Battery + E-1073-1233-437-
underground carriage
+
–
L
+
l
+
–
ON/OFF test
OFF
ON
c
c
c
(External power supply not shown)