Product Length/Depth

401 mm

Product Height

207 mm

Product Width

210 mm

Product Weight

21 kg

Compliances

RoHS conform

Certifications

IEC/EN 60947

IEC

Application

Use in unearthed supply systems at 525 V

Type

Circuit breaker

Circuit breaker frame type

NZM4

Number of poles

Three-pole

Release system

Electronic release

Special features

IEC/EN 60947-4-1, IEC/EN 60947-2

The circuit-breaker fulfills all requirements for AC-3 switching category.

R.m.s. value measurement and “thermal memory”

Adjustable time delay setting to overcome current peaks tr at 6 x Ir also infinity (without overload releases)

All AC-3 rating data applies to direct switching by the circuit-breaker under normal operating conditions. If, for example, a contactor takes over AC-3 switching under normal operating conditions, the full rated uninterrupted current applies to the circuit-breaker, In = Iu.

Maximum back-up fuse, if the expected short-circuit currents at the installation location exceed the switching capacity of the circuit breaker (Rated short-circuit breaking capacity Icn)

Rated current = rated uninterrupted current: 875 A

Fitted with:

Thermal protection

Rated operating power at AC-3, 230 V

250 kW

Rated operational current

588 A (690 V AC-3)

820 A (400 V AC-3)

Rated short-time withstand current (t = 0.3 s)

19.2 kA

Rated short-time withstand current (t = 1 s)

19.2 kA

Amperage Rating

875 A

Instantaneous current setting (Ii) - min

875 A

Instantaneous current setting (Ii) - max

12250 A

Overload current setting (Ir) - min

438 A

Overload current setting (Ir) - max

875 A

Short-circuit release non-delayed setting - min

1750 A

Short-circuit release non-delayed setting - max

12250 A

Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 230 V, 50/60 Hz

63 kA

Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 400/415 V, 50/60 Hz

50 kA

Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 440 V, 50/60 Hz

50 kA

Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 525 V, 50/60 Hz

50 kA

Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 690 V, 50/60 Hz

37 kA

Rated short-circuit making capacity Icm at 240 V, 50/60 Hz

275 kA

Rated short-circuit making capacity Icm at 400/415 V, 50/60 Hz

187 kA

Rated short-circuit making capacity Icm at 440 V, 50/60 Hz

187 kA

Rated short-circuit making capacity Icm at 525 V, 50/60 Hz

143 kA

Rated short-circuit making capacity Icm at 690 V, 50/60 Hz

100 kA

Rated operating power at AC-3, 400 V

500 kW

Short-circuit total breaktime

< 25 ms (≦ 415 V); < 35 ms (> 415 V)

Electrical connection type of main circuit

Screw connection

Isolation

300 V AC (between the auxiliary contacts)

500 V AC (between auxiliary contacts and main contacts)

Number of operations per hour - max

60

Handle type

Rocker lever

Utilization category

B (IEC/EN 60947-2)

Overvoltage category

III

Pollution degree

3

Lifespan, electrical

2000 operations at 690 V AC-1

3000 operations at 415 V AC-1

3000 operations at 400 V AC-1

1000 operations at 690 V AC-3

2000 operations at 400 V AC-3

2000 operations at 415 V AC-3

Direction of incoming supply

As required

Voltage rating

690 V - 690 V

Rated insulation voltage (Ui)

1000 V

Rated impulse withstand voltage (Uimp) at auxiliary contacts

6000 V

Rated impulse withstand voltage (Uimp) at main contacts

8000 V

Mounting Method

Built-in device fixed built-in technique

Fixed

Degree of protection

IP20 (basic degree of protection, in the operating controls area)

IP20

Degree of protection (IP), front side

IP40 (with insulating surround)

IP66 (with door coupling rotary handle)

Degree of protection (terminations)

IP10 (tunnel terminal)

IP00 (terminations, phase isolator and strip terminal)

Protection against direct contact

Finger and back-of-hand proof to VDE 0106 part 100

Shock resistance

15 g (half-sinusoidal shock 11 ms)

Switch off technique

Electronic

Climatic proofing

Damp heat, cyclic, to IEC 60068-2-30

Damp heat, constant, to IEC 60068-2-78

Lifespan, mechanical

10000 operations