Eaton NZMN3-4-VX400 Molded-Case Circuit Breaker 4-Pole 400A 50KA

Eaton NZM3 molded-case circuit breaker, type NZMN3-4-VX400. 4-pole, rated current 400 A, breaking-capacity class N, frame size NZM3 (up to 630 A). Rated operational voltage 690 V AC; rated ultimate short-circuit breaking capacity (Icu) 50 kA at 400/415 V AC to IEC/EN 60947-2. Electronic trip unit — adjustable overload with time-selective short-circuit protection (LSI). Utilization category A, suitable for isolation.

Manufacturer part number (MPN)

NZMN3-4-VX400

Series

Eaton NZM3 (Moeller series NZM)

Type

Molded-case circuit breaker (MCCB)

Breaking-capacity class

N (standard breaking capacity)

Number of poles

4-Pole

Rated current (In)

400 A

Frame size

NZM3 (up to 630 A)

Rated operational voltage (Ue)

690 V AC

Rated insulation voltage (Ui)

800 V

Rated ultimate short-circuit breaking capacity (Icu) at 400/415 V AC

50 kA

Trip unit / release

Electronic trip unit — adjustable overload with time-selective short-circuit protection (LSI)

Utilization category

A

Suitable for isolation

Yes

Standard

IEC/EN 60947-2

EAN / GTIN

4015081920020

HS code

8536.20

Sales unit

pcs

Eaton catalogue number

191490

Depth

166 mm

Height

275 mm

Width

185 mm

Weight

8.964 kg

Compliances

RoHS conform

Certifications

IEC; IEC/EN 60947

Functions

Systems, cable, selectivity and generator protection

Amperage Rating

400 A

Application

Use in unearthed supply systems at 690 V

Circuit breaker frame type

NZM3

Features

Protection unit; Motor drive optional

Release system

Electronic release

Ambient operating temperature - max

70 °C

Ambient storage temperature - max

70 °C

Ambient operating temperature - min

-25 °C

Equipment heat dissipation, current-dependent

48 W

Rated operational current for specified heat dissipation (In)

400 A

Current rating of neutral conductor

200% of phase conductor

Direction of incoming supply

As required

Electrical connection type of main circuit

Screw connection

Handle type

Rocker lever

Instantaneous current setting (Ii) - max

12 A

Instantaneous current setting (Ii) - min

2 A

Isolation

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

Lifespan, electrical

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

Number of operations per hour - max

60

Overload current setting (Ir) - max

400 A

Overload current setting (Ir) - min

160 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 short-circuit making capacity Icm at 240 V

50/60 Hz

187 kA

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

50/60 Hz

110 kA

Rated short-circuit making capacity Icm at 440 V

50/60 Hz

77 kA

Rated short-circuit making capacity Icm at 525 V

50/60 Hz

55 kA

Rated short-circuit making capacity Icm at 690 V

50/60 Hz

40 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 delay current setting (Isd) - max

10 A

Short delay current setting (Isd) - min

2 A

Short-circuit release delayed setting - max

4000 A

Short-circuit release delayed setting - min

320 A

Short-circuit release non-delayed setting - max

4800 A

Short-circuit release non-delayed setting - min

800 A

Short-circuit total breaktime

< 10 ms

Voltage rating

690 V - 690 V

Climatic proofing

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

Degree of protection

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

Degree of protection (IP), front side

IP66 (with door coupling rotary handle); IP40 (with insulating surround)

Degree of protection (terminations)

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

Lifespan, mechanical

15000 operations

Mounting Method

Fixed; Built-in device fixed built-in technique

Number of auxiliary contacts (change-over contacts)

0

Number of auxiliary contacts (normally closed contacts)

0

Number of auxiliary contacts (normally open contacts)

0

Position of connection for main current circuit

Front side

Protection against direct contact

Finger and back-of-hand proof to DIN EN 50274/VDE 0106 part 110

Shock resistance

20 g (half-sinusoidal shock 20 ms)

Optional terminals

Box terminal. Connection on rear. Tunnel terminal

Standard terminals

Screw terminal

Terminal capacity (aluminum solid conductor/cable)

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

Terminal capacity (control cable)

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

Terminal capacity (copper busbar)

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

Terminal capacity (copper solid conductor/cable)

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

Terminal capacity (copper stranded conductor/cable)

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

Document Name

Description Action

Standard

Eaton NZM

HS Code

8536.20

• EAN 4015081920020
• SAP 1200600596
• Code 82989016