Eaton NZMH3-ME450

Eaton NZMH3-ME450 is listed under Electrical Components / Motor Protection Circuit Breakers. Sales unit: pcs; Eaton catalogue number: 284469; Depth: 166 mm; Height: 275 mm; Width: 140 mm; Weight: 6.34 kg.

Manufacturer part number (MPN)

NZMH3-ME450

EAN / GTIN

4015082844691

Sales unit

pcs

Eaton catalogue number

284469

Depth

166 mm

Height

275 mm

Width

140 mm

Weight

6.34 kg

Compliances

RoHS conform

Certifications

IEC; IEC/EN 60947

Functions

Motor protection; Phase failure sensitive

Amperage Rating

450 A

Application

Use in unearthed supply systems at 690 V

Circuit breaker frame type

NZM3

Fitted with

Thermal protection

Number of poles

Three-pole

Release system

Electronic release

Type

Circuit breaker

Ambient operating temperature - max

70 °C

Ambient storage temperature - max

70 °C

Ambient operating temperature - min

-25 °C

Ambient storage temperature - min

-40 °C

Equipment heat dissipation, current-dependent

60.75 W

Rated operational current for specified heat dissipation (In)

450 A

Direction of incoming supply

As required

Electrical connection type of main circuit

Screw connection

Handle type

Rocker lever

Instantaneous current setting (Ii) - max

6300 A

Instantaneous current setting (Ii) - min

450 A

Isolation

300 V AC (between the auxiliary contacts); 500 V AC (between auxiliary contacts and main contacts)

Lifespan, electrical

2000 operations at 415 V AC-3; 5000 operations at 400 V AC-1; 2000 operations at 690 V AC-3; 3000 operations at 690 V AC-1; 2000 operations at 400 V AC-3; 5000 operations at 415 V AC-1

Number of operations per hour - max

60

Overload current setting (Ir) - max

450 A

Overload current setting (Ir) - min

225 A

Overvoltage category

III

Pollution degree

3

Rated impulse withstand voltage (Uimp) at auxiliary contacts

6000 V

Rated impulse withstand voltage (Uimp) at main contacts

8000 V

Rated insulation voltage (Ui)

1000 V

Rated operating power at AC-3

230 V

132 kW

Rated operating power at AC-3

400 V

250 kW

Rated operational current

446 A (690 V AC-3); 437 A (400 V AC-3)

Rated short-circuit making capacity Icm at 240 V

50/60 Hz

330 kA

Rated short-circuit making capacity Icm at 400/415 V

Rated short-circuit making capacity Icm at 440 V

50/60 Hz

286 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

74 kA

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

3.3 kA

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

3.3 kA

Short-circuit release non-delayed setting - max

5400 A

Short-circuit release non-delayed setting - min

900 A

Short-circuit total breaktime

< 10 ms

Utilization category

A (IEC/EN 60947-2)

Voltage rating

690 V - 690 V

Climatic proofing

Damp heat, constant, to IEC 60068-2-78; Damp heat, cyclic, to IEC 60068-2-30

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)

IP00 (terminations, phase insulator and strip terminal); IP10 (tunnel terminal)

Lifespan, mechanical

15000 operations

Mounting Method

Fixed; Built-in device fixed built-in technique

Protection against direct contact

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

Shock resistance

20 g (half-sinusoidal shock 20 ms)

Switch off technique

Electronic

Optional terminals

Box terminal. Connection on rear. Tunnel terminal

Standard terminals

Screw terminal

Terminal capacity (aluminum solid conductor/cable)

16 mm² (1x) direct at switch rear-side connection; 10 mm² - 16 mm² (2x) direct at switch rear-side connection; 16 mm² (1x) at tunnel terminal

Terminal capacity (aluminum stranded conductor/cable)

25 mm² - 185 mm² (1x) at tunnel terminal; 50 mm² - 240 mm² (1x) at 2-hole tunnel terminal; 50 mm² - 240 mm² (2x) at 2-hole tunnel terminal; 25 mm² - 120 mm² (2x) direct at switch rear-side connection; 25 mm² - 120 mm² (1x) direct at switch rear-side connection

Terminal capacity (control cable)

0.75 mm² - 1.5 mm² (2x); 0.75 mm² - 2.5 mm² (1x)

Terminal capacity (copper busbar)

Max. 30 mm x 10 mm + 30 mm x 5 mm direct at switch rear-side connection; M10 at rear-side screw connection; Min. 20 mm x 5 mm direct at switch rear-side connection; Max. 10 mm x 50 mm (2x) at rear-side width extension

Terminal capacity (copper solid conductor/cable)

16 mm² (2x) at box terminal; 16 mm² (1x) at tunnel terminal; 16 mm² (1x) direct at switch rear-side connection; 16 mm² (2x) direct at switch rear-side connection; 300 mm² (2x) at rear-side width extension

Terminal capacity (copper stranded conductor/cable)

25 mm² - 240 mm² (1x) direct at switch rear-side connection; 25 mm² - 240 mm² (2x) direct at switch rear-side connection; 16 mm² - 185 mm² (1x) at 1-hole tunnel terminal; 25 mm² - 120 mm² (2x) at box terminal; 50 mm² - 240 mm² (2x) at 2-hole tunnel terminal; 35 mm² - 240 mm² (1x) at box terminal

Document Name

Description Action

Rated operation power at AC-3, 400 V

250 kW

With integrated auxiliary switch

No

Rated permanent current Iu

450 A

With integrated under voltage release

No

Rated operating voltage

690 V

Overload release current setting

225–450 A

With thermal overload protection

Yes

Type of electrical connection of main circuit

Screw connection

Type of control element

Rocker lever

Rated operation power at AC-3, 230 V

132 kW

Rated short-circuit breaking capacity Icu at 400 V, AC

130 kA

Adjustment range undelayed short-circuit release

450–6300 A

Phase failure sensitive

Yes

Device construction

Built-in device fixed built-in technique

Country of origin

Romania

HS Code

8536.30

• EAN 4015082844691
• SAP 1200295848
• Code 82268792