High Performance Thermal-Magnetic Circuit Breaker 452-...
www.e-t-a.de
1646 1
1
Description
Typical applications
Ordering information
Approvals
(without auxiliary contacts)
Technical data
Single pole high performance thermal-magnetic circuit breaker, with
tease-free, trip-free, snap action mechanism and push/pull on/off
actuation (M-type TM CBE to EN 60934). An indicator band on the
push button clearly shows the tripped/off position. Threadneck panel
mounted in tracked vehicle and aircraft/general purpose versions.
Extra low voltage wiring systems on all types of vehicle for land, sea
and air; defence equipment; battery powered machines.
452-...
Standard current ratings and typical volt drop values
Type No.
452 standard delay curve
Terminal design
K34 screw terminals M6, reinforced
Version
FN2 vehicle application
LN2 aircraft/general application
Current ratings
50...100 A
452 - K34 - LN2 - 80 A ordering example
Voltage rating DC 28 V
Current rating range 50...100 A
Auxiliary circuit 0.5 A, DC 28 V
Typical life 2,500 operations at I
N
Ambient temperature -55...+75 °C (-67...+167 °F)
Insulation co-ordination rated impulse pollution
(IEC 60664 and 60664A) withstand voltage degree
1.5 kV 3
Dielectric strength
(IEC 60664 and 60664A) test voltage
operating area AC 1,500 V
Insulation resistance > 100 MΩ (DC 500 V)
Interrupting capacity I
cn
6,000 A
Degree of protection operating area IP40
(IEC 60529/DIN 40050) terminal area IP00
Vibration 10 g (55-2000 Hz), ± 0.76 mm (10-55 Hz)
to VG 95210, sheet 19,
IEC 60068-2-6, test Fc
Shock 50 g (11 ms)
to VG 95210, sheet 28,
IEC 60068-2-27, test Ea
Corrosion 96 hours at 5 % salt mist
to VG 95210, sheet 2,
IEC 60068-2-11, test Ka
Humidity 240 hours at 95 % RH
to VG 95210, sheet 7,
IEC 60068-2-3, test C
Explosion to VG 95210, sheet 10,
MIL-STD-202, meth. 109
Mass approx. 122 g
Current
rating (A)
Volt drop
(mV)
Current
rating (A)
Volt drop
(mV)
50 90 80 92
60 85 90 100
70 85 100 100
75 90
All dimensions without tolerances are for reference only. In the interest of improved design,
performance and cost effectiveness the right to make changes in these specifications
without notice is reserved.Product markings may not be exactly as the ordering codes.
Errors and omissions excepted.
Authority Standard Rated voltage Current ratings
UL UL 1077 DC 28 V
DC 72 V
50 A...125 A
50 A...125 A
CSA C22.2 No 235 DC 28 V
DC 72 V
50 A…100 A
50 A…125 A
Bw VG 95345,
part 17
DC 28 V 60 A…100 A
Bw LN 29808 AC 115 V, 400 Hz
DC 28 V
80 A, 100 A
80 A, 100 A
QPL
Canada
Dep. of
National
Defence
VG 95345,
part 17
DC 28 V 60 A…100 A
QPL
Sweden
Defence
Material
Admin.
TL 5925-001 DC 28 V 60 A…100 A
