446-K Datasheet, PDF (1/2 Pages) ETAL Group – Heavy duty vehicles, battery systems, process control

High Performance Thermal-Magnetic Circuit Breakers 446/447/449
Description
Single pole thermal-magnetic circuit breakers with tease-free, trip-free,
press-to-reset snap action mechanism and special dual button manual
release which avoids the danger of unintended disconnection (M-type
TM CBE to EN 60934). Surface mounted, compact design available
with fast acting, standard and delayed switching characteristics.
Options include auxiliary contact and remote electrical disconnection.
Typical applications
Heavy duty vehicles, battery systems, process control.
Ordering information
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446-... 447-... 449-...
Type No.
446 single pole base mounting, fast characteristic curve
447 single pole base mounting, medium delay characteristic curve
449 single pole base mounting, delayed characteristic curve
Terminal design, mounting
K screw terminals M12, insertion nuts M8
Manual release
H standard
Version
N general application (type 446 only)
FN general application (types 447 and 449 only)
Auxiliary contacts (optional)
Si 2 electrically separate auxiliary contacts
with screw terminals M3.5 and
blade terminals DIN 46244-C-MS-S
Remote trip (optional for types 447 and 449)
FA24 DC 24 V coil voltage
Current ratings
30...400 A type 446
100...400 A type 447
125...500 A type 449
447 - K - H - FN - ... - ... - 400 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.
Standard current ratings and typical internal resistance values
Current
ratings (A)
Type 446:
30
40
50
60
70
80
90
100
125
150
170
200
225
250
300
350
400
Internal
resistance (Ω)
0.006
0.0048
0.0038
0.0028
0.0025
0.0023
0.0019
0.0016
< 0.001
< 0.001
< 0.001
< 0.001
< 0.001
< 0.001
< 0.001
< 0.001
< 0.001
Current
ratings (A)
Type 447:
100
125
160
225
300
400
Type 449:
125
160
225
315
350
400
500
Internal
resistance (Ω)
< 0.002
< 0.001
< 0.001
< 0.001
< 0.001
< 0.001
< 0.001
< 0.001
< 0.001
< 0.001
< 0.001
< 0.001
< 0.001
only with 50 % ON duty
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.
Technical data
Voltage rating
DC 28 V
Current rating range
type 446: 30...400 A
type 447: 100...400 A
type 449: 125...500 A
Auxiliary circuit
10 A
Electrical remote disconnection (-FA)
operating voltage
DC 12 V or DC 24 V
operating current
approx. 18 A or 12 A
max. pulse time
switching time
10 ms < t_ON < 20 ms / t_OFF > 10 s
< 20 ms
Typical life
1,000 operations at I_N
2,000 operations mechanical
Ambient temperature
-55...+75 °C (-67...+167 °F)
Insulation co-ordination
(IEC 60664 and 60664A)
rated impulse
withstand voltage
1.5 kV
pollution
degree
3
Dielectric strength
(IEC 60664 and 60664A)
operating area
main circuit to
auxiliary contacts
test voltage
AC 1,500 V
AC 1,500 V
Insulation resistance
> 100 MΩ (DC 500 V)
Interrupting capacity I_cn
Degree of protection
(IEC 60529/DIN 40050)
10,000 A
operating area IP40
terminal area IP00
Vibration

without aux. contacts:
with auxiliary contacts:
to VG 95210, sheet 19,
IEC 60068-2-6, test Fc:
10 g (56-500 Hz), ± 0.76 mm (10-55 Hz)
4 g (56-500 Hz), ± 0.30 mm (10-56 Hz)
Shock

without aux. contacts:
with auxiliary contacts:
to VG 95210, sheet 28,
IEC 60068-2-27, test Ea:
50 g (11 ms)
20 g (11 ms)
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
Mass
approx. 850 g
Approvals
Authority
Type 446/
Type 447
Type 449:
UL
CSA
UL
CSA
Bw
Standard
UL 1077
C22.2 No 235
UL 1077
C22.2 No 235
95345, part 15
Rated voltage
DC 28 V
DC 28 V
DC 28 V
DC 28 V
DC 28 V
Current ratings
up to 400 A
up to 400 A
100...350 A
100…350 A
125...500 A
1646
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