High Performance Thermal-Magnetic Circuit Breakers 446/447/449

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2013/14

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Description

Typical applications

Ordering information

Approvals

Technical data

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.

Heavy duty vehicles, battery systems, process control.

446-...

447-...

449-...

Standard current ratings and typical internal resistance values

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.

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

10 ms < tON < 20 ms / tOFF > 10 s

switching time

< 20 ms

Typical life

1,000 operations at IN

2,000 operations mechanical

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

main circuit to

auxiliary contacts

AC 1,500 V

Insulation resistance

> 100 MΩ (DC 500 V)

Interrupting capacity Icn

10,000 A

Degree of protection

operating area IP40

(IEC 60529/DIN 40050)

terminal area IP00

Vibration

to VG 95210, sheet 19,

IEC 60068-2-6, test Fc:

without aux. contacts:

10 g (56-500 Hz), ± 0.76 mm (10-55 Hz)

with auxiliary contacts:

4 g (56-500 Hz), ± 0.30 mm (10-56 Hz)

Shock

to VG 95210, sheet 28,

IEC 60068-2-27, test Ea:

without aux. contacts:

50 g (11 ms)

with auxiliary contacts:

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

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.

Current

ratings (A)

Internal

resistance (Ω)

Current

ratings (A)

Internal

resistance (Ω)

Type 446:

Type 447:

30

0.006

100

< 0.002

40

0.0048

125

< 0.001

50

0.0038

160

< 0.001

60

0.0028

225

< 0.001

70

0.0025

300

< 0.001

80

0.0023

400

< 0.001

90

0.0019

Type 449:

100

0.0016

125

< 0.001

125

< 0.001

160

< 0.001

150

< 0.001

225

< 0.001

170

< 0.001

315

< 0.001

200

< 0.001

350

< 0.001

225

< 0.001

400

< 0.001

250

< 0.001

500

< 0.001

300

< 0.001

only with 50 % ON duty

350

< 0.001

400

< 0.001

Authority

Voltage ratings

Current ratings

Type 446:

UL

DC 28 V

30...400 A

Type 447:

UL

DC 28 V

100...400 A

QPL Sweden

DC 28 V

125...400 A

Type 449:

UL

DC 28 V

125...350 A

VG 95345, part 15

DC 28 V

125...500 A