
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
Current rating range
DC 12 V, DC 24 V
240 A type 921, single pole
120 A type 922, double pole
6 A at 24 V
Auxiliary contact rating
Electrical remote disconnection (-FA):
operating voltage
operating current
max. pulse time
switching time
Electrical remote re-connection (-FC):
operating voltage
operating current
max. pulse time
switching time
Typical life
DC 12 V or DC 24 V
approx. 18 A or approx. 12 A
10 ms < t
ON
< 20 ms /t
OFF
> 10 s
< 20 s
DC 12 V or DC 24 V
approx. 30 A or approx. 15 A
0.1 s < t
ON
< 1.2 s /t
OFF
> 60 s
< 100 ms
10,000 operations at I
N
20,000 operations mechanical
-40...+75
°
C
Rated impulse
withstand voltage degree
6 kV
Ambient temperature
Insulation co-ordination
(IEC 664 and 664A)
Pollution
3
Dielectric strength
(IEC 664 and 664A)
operating area
pole/pole
main to aux. circuit
aux. circuits 11-12 to 13-14
Insulation resistance
Switching capacity
Test voltage
AC 3300 V
AC 3300 V
AC 2200 V
AC 1000 V
>100 M
(DC 500 V)
Type 921
2500 A for 1 s at +23
°
C
600 A for 1 min at +23
°
C
600 A for 2 min at -23
°
C
600 A for 90 s at 0
°
C
operating area IP 40
terminal area IP 00
IP 54 with additional enclosure -B..
5 g (57-200 Hz)
±
0.38 mm (10-57 Hz)
to IEC 68-2-6, test Fc
10 frequency cycles/axis
25 g (11 ms)
to IEC 68-2-27, test Ea
96 hours at 5 % salt mist
to IEC 68-2-11, test Ka
240 hours at 95 % RH
to IEC 68-2-3, test Ca
approx. 1000 g with remote disconnection
approx. 1400 g with remote disconnection
and re-connection
Type 922
1500 A for 1 s at +23
°
C
600 A for 30 s at +23
°
C
600 A for 1 min at -23
°
C
600 A for 45 s at 0
°
C
Degree of protection
(IEC 529/DIN 40050)
Vibration
Shock
Corrosion
Humidity
Mass
Description
Battery Isolation Switches 921/922
Single or two pole isolation switches to EN 60947 with toggle actuation.
Options include auxiliary contacts, a moulded flame retardant enclosure
for added environmental protection (with or without rotary action
external operating knob), and remote operation - disconnection only, or
disconnection and re-connection. A version for use in hazardous areas
(e.g. petroleum and chemical tankers) is available to special order.
Typical applications
Vehicles of all types (including tankers), boats, battery powered systems.
Ordering information
Approvals
Authority
LRoS
BASEEFA
Voltage rating
DC 28 V
DC 12 V, DC 24 V
Type
921, 922
922-B33-K72-5-...
Technical data
921 922
single pole double pole
Type No.
921
922
single pole switch
double pole switch
Enclosure design
(optional)
B3
without external operating knob, for use only with single pole devices
B31
with external operating knob, for use only with single pole devices
B32
without external operating knob, for use only with double pole devices
B33
with external operating knob, for use with double pole devices
B34
with external operating knob, for use only with double pole devices*
B35
without external operating knob, for use only with single pole devices*
*with remote-re-connection facility
Terminal design
K12
for single pole version, enclosures B3, B31, B35
K60
for single pole version
K61
for double pole version
K62
for double pole version
K72
for double pole version, enclosures B32, B33, B34
Mounting
5
mounting brackets - surface mounting
Auxiliary contacts
(blade terminals 6.3x0.8)
Si2
one N/O
Si1
one N/C
2Si2 two N/O
Si10 one each N/O and N/C
Remote operation
FA
remote disconnection
FC
electrical remote disconnection (FA)
and re-connection (FE)
BC-FA electrical remote disconnection and
manual remote re-connection
(not for enclosure -B..)
Coil voltage
12 AC/DC 12 V
24 AC/DC 24 V
Current ratings
240 A (type 921)
120 A (type 922)
921 - B31 - K12 - 5 - Si2 - FA 24 - 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.