High Performance Thermal-Magnetic Circuit Breaker 452-...
www.e-t-a.com
Issue C 4 - 35
4
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, with
optional fast acting magnetic characteristics and auxiliary contacts.
Extra low voltage wiring systems on all types of vehicle for land, sea
and air; defence equipment; battery powered machines.
452-...
without auxiliary contacts with auxiliary contacts
Authority Voltage ratings Current ratings
VG 95345, part 17 DC 28 V 60...100 A
QPL, Canada DC 28 V 60...100 A
QPL, Sweden DC 28 V 60...100 A
(452-K34-FN)
UL DC 28 V; DC 72 V 50...125 A
Standard current ratings and typical volt drop values
Type No.
452 standard delay curve
452-2 fast trip curve
Terminal design
K14 screw terminals M6
K34 screw terminals M6, reinforced
Version
FN2 vehicle application
LN2 aircraft/general application
Auxiliary contacts
(
blank) without auxiliary contacts
S1 with auxiliary contact
(connector EN 3155-016M2018 (NC)
S5 as S1, but with polarized auxiliary contact (NC)
Current ratings
50...100 A
452 - K14 - LN2 - S1 - 80 A ordering example
Current Volt drop Current Volt drop
rating (A) (mV) rating (A) (mV)
50 90 80 92
60 85 90 100
70 85 100 100
75 90
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 without auxiliary contact
approx. 126 g with auxiliary contact
