
Issue C
4
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Germany (0 91 87) 10-0 – USA (847) 827-7600 – UK (01296) 420336 – www.etacbe.com
Voltage rating
Voltage rating range ON
DC 12 V
10.3 - 16 V
9 - 16 V
Correct switching performance is not guaranteed if
the voltage falls below the minimum value.
DC 24 V
18 - 32 V
16 - 32 V
OFF
Temperature range
electronic control unit
Operating current
-40...+ 80
°
C
ON
OFF
ON
OFF
approx. 30 A
approx. 10 A
approx. 15 A
approx. 20 A
Excitation time
typically 100 ms
typically 20 ms
0.1 Hz max.
typically < 1 mA
Switching frequency
Power consumption
of electronic control unit
Control inputs
(when switched off or button operated)
E-1073-.1..: ’E/A’(ON/OFF), ’U-AUS’
(undervoltage protection OFF), ’A-W’ (auto reset)
E-1073-.2..: ’T-EIN’, (button ON)
’T-AUS’, (button OFF)
max. 32 V
> 8 V
< 3 V
Voltage
ON (high)
OFF (low)
Power consumption typically 1 mA
EMC
Reverse polarity
protection
typically 5 mA
according to DIN 40839/ISO 7637
If polarized incorrectly, the Battery Isolation
Switch will operate immediately. The circuit
breaker will trip after a few seconds.
optional with E-1073-.1..
Undervoltage protection
switching thresholds 11.0 V
±
0.2 V
hysteresis
trip time
Undervoltage status output(’UST‘), optional with E-1073-.1..
transistor output
current load
corresponding to 2 W lamp load, short-
circuit proof
Automatic reset (’A-W‘),
optional with E-1073-.1.., with series 921/922 only)
Reset after mechanical disconnection is provided
by the integral electronic control after approx. 100 ms.
22.8 V
±
0.2 V
typically 0.5 V
typically 40 sec
minus switching
Control current supply (’+US2‘), with E-1073-.2.. for T-EIN/T-AUS
May be connected to 20 control intputs.
Noise-voltage proof, short-circuit proof
Terminals
control terminals
blade terminals 6.3x0.8 mm
Mass, with circuit breaker approx. 2,000 g without enclosure
or isolation switch
approx. 2,500 g with enclosure
Battery Isolation Switches E-1073-437 and E-1073-921/-922
Description
Ordering information
Technical data – Electronic module
E-1073-437
Single pole circuit breaker type 437 or single/two pole isolation switches
types 921/922 featuring an additional electronic function module which
limits the duration of the supply to the remote disconnect and re-
connect coils, avoiding damage in the event of unusual operating
circumstances. Available with undervoltage monitoring option to protect
batteries from the effects of deep discharge, status output for
undervoltage, auto reset feature.
Typical applications
Battery and cable protection for all types of vehicle (including electric),
battery powered systems.
Technical data of switch or circuit breaker
see types 437, 921 or 922
Type No.
E-1073 control unit for types 921/922 and 437 with remote control
Voltage rating
0 DC 12 V
1 DC 24 V
Control mode
1 ON/OFF control input
Additional function
00 none
02 with undervoltage protection and status output
12
with autoreset, undervoltage protection and status output (921/922 only)
2 ON and OFF buttons
33 with control current supply and ON/OFF test input
Circuit Breaker/Isolation Switch
437
single pole circuit breaker
921
single pole battery isolation switch
922
double pole battery isolation switch
Enclosure design
(optional)
blank = without housing
B3
moulded housing, for use with single pole devices
B32
moulded housing, for use with double pole devices
B34
moulded housing, external operating knob, for use
with double pole devices (not with auto reset)
B35
moulded housing, external operating knob, for use
with single pole devices (not with auto reset)
Terminal design
K12
flat screw terminals angled 90
°
, for single pole version
K60
straight flat screw terminals, for single pole
version, without housing
K72
flat screw terminals angled 90
°
, for double pole version
Characteristic curve
(type 437 only)
06
07
fast magnetic trip
delayed magnetic trip (standard)
Auxiliary contacts
Si01
one N/C, two N/O
(one N/C, one N/O with
autoreset option)
Current ratings
437: 40, 50, 63, 80, 100, 120
160, 200, 240 A
921: 240 A
922: 120 A
E-1073
- 1102 - 437 - B3 - K12 - 07 - Si01 - 240 A ordering example
The exact part number required can be built up from the table of choices shown
above. Ordering references for optional features should be omitted if not required.