Product range |
Circuit-breaker |
Protective function |
Motor protection |
Standard/Approval |
|
Installation type |
IEC |
Release system |
Fixed |
Construction size |
Electronic release |
Description |
NZM3 |
Number of poles |
Phase-failure sensitivity IEC/EN 60947-4-1, IEC/EN 60947-2 R.m.s. value measurement and “thermal memory” adjustable time delay setting to overcome current peaks tr: 2 – 20 s at 6 x Ir also infinity (without overload releases) NZM...S1 terminal type: NZM...XKSA cover required NZM4...S1 terminal type: Insulated busbar connection (NZM4-XKS screw connection) |
Standard equipment |
3 pole |
Rated current = rated uninterrupted current [In = Iu] |
Screw connection |
1000 V 50/60 Hz [Icu] |
450 A |
Overload trip [Ir
] 225 - 450 A
Short-circuit releases [Irm
] >Non-delayed [Ii = Ir x …] |
15 kA |
Rated surge voltage invariability [Uimp
] >Main contacts |
225 - 450 A |
Rated surge voltage invariability [Uimp
] >Auxiliary contacts |
2 - 14 |
Rated operational voltage [Ue] |
8000 V |
Rated current = rated uninterrupted current [In = Iu] |
6000 V |
Overvoltage category/pollution degree |
1000 V AC |
Rated insulation voltage [Ui
] |
450 A |
Utilization category |
III/3 |
Ambient temperature >Ambient temperature, storage |
1000 V |
Ambient temperature >Operation |
A |
240 V 50/60 Hz [Icm
] |
- 40 - + 70 °C |
400/415 V 50/60 Hz [Icm
] |
-25 - +70 °C |
440 V 50/60 Hz [Icm
] |
330 kA |
525 V 50/60 Hz [Icm
] |
330 kA |
690 V 50/60 H [Ic] |
286 kA |
1000 V 50/60 Hz [Icm] |
143 kA |
Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >240 V 50/60 Hz [Icu
] |
74 kA |
Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >400/415 V 50 Hz [Icu
] |
17 kA |
Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >440 V 50/60 Hz [Icu
] |
150 kA |
Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >525 V 50/60 Hz [Icu
] |
150 kA |
Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >690 V 50/60 Hz [Icu
] |
130 kA |
Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >1000 V 50/60 Hz [Icu] |
65 kA |
Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >230 V 50/60 Hz [Ics
] |
35 kA |
Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >400/415 V 50/60 Hz [Ics
] |
15 kA |
Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >440 V 50/60 Hz [Ics
] |
150 kA |
Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >525 V 50/60 Hz [Ics
] |
150 kA |
Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >690 V 50/60 Hz [Ics] |
130 kA |
Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >1000 V AC [Ics] |
33 kA |
t = 0.3 s [Icw
] |
9 kA |
t = 1 s [Icw
] |
10 kA |
Lifespan, mechanical [Operations] |
3.3 kA |
Max. operating frequency |
3.3 kA |
1000 V 50/60 Hz [Operations] |
15000 |
Standard equipment |
60 Ops/h |
Round copper conductor >Box terminal >Solid |
Lifespan, mechanical: of which max. 50 % trip by shunt/undervoltage release |
Round copper conductor >Box terminal >Stranded |
1000 |
Round copper conductor >Tunnel terminal >Stranded >Stranded |
Screw connection |
Round copper conductor >Tunnel terminal >Stranded >Double hole |
2 x 16 mm2 |
Round copper conductor >Bolt terminal and rear-side connection >Direct on the switch >Solid |
1 x (35 - 240) 2 x (25 - 120) mm2
|
Round copper conductor >Bolt terminal and rear-side connection >Direct on the switch >Stranded |
1 x (25 - 185) mm2
|
Al conductors, Cu cable >Tunnel terminal >Solid |
1 x (50 - 240) 2 x (50 - 240) mm2
|
Al conductors, Cu cable >Tunnel terminal >Stranded >Stranded |
1 x 16 2 x (10 - 16 mm2
|
Al conductors, Cu cable >Tunnel terminal >Stranded |
1 x (25 - 120) 2 x (25 - 120) mm2
|
Al conductors, Cu cable >Tunnel terminal >Stranded >Double hole |
1 x 16 mm2
|
Cu strip (number of segments x width x segment thickness) >Box terminal [min.] |
1 x (25 - 185) 2) mm2
|
Cu strip (number of segments x width x segment thickness) >Box terminal [max.] |
2) Up to 240 mm² can be connected depending on the cable manufacturer. |
Cu strip (number of segments x width x segment thickness) >Bolt terminal and rear-side connection >Flat copper strip, with holes [min.] |
1 x (50 - 240) 2 x (50 - 240) mm2
|
Cu strip (number of segments x width x segment thickness) >Bolt terminal and rear-side connection >Flat copper strip, with holes [max.] |
6 x 16 x 0.8 mm |
Cu strip (number of segments x width x segment thickness) >Bolt terminal and rear-side connection >Connection width extension |
10 x 24 x 1.0 + 5 x 24 x 1.0 (2 x) 8 x 24 x 1.0 mm |
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Screw connection |
6 x 16 x 0.8 mm |
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Direct on the switch [min.] |
10 x 32 x 1.0 + 5 x 32 x 1.0 mm |
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Direct on the switch [max.] |
(2 x) 10 x 50 x 1.0 mm |
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Connection width extension >Connection width extension [max.] |
M10 |
Control cables |
20 x 5 mm |
Rated operational current for specified heat dissipation [In] |
30 x 10 + 30 x 5 mm |
Equipment heat dissipation, current-dependent [Pvid] |
2 x (10 x 50) mm |
Operating ambient temperature min. |
1 x (0.75 - 2.5) 2 x (0.75 - 1.5) mm2
|
Operating ambient temperature max. |
450 A |
10.2 Strength of materials and parts >10.2.2 Corrosion resistance |
60.75 W |
10.2 Strength of materials and parts >10.2.3.1 Verification of thermal stability of enclosures |
-25 °C |
10.2 Strength of materials and parts >10.2.3.2 Verification of resistance of insulating materials to normal heat |
+70 °C |
10.2 Strength of materials and parts >10.2.3.3 Verification of resistance of insulating materials to abnormal heat and fire due to internal electric effects |
Meets the product standard´s requirements. |
10.2 Strength of materials and parts >10.2.4 Resistance to ultra-violet (UV) radiation |
Meets the product standard´s requirements. |
10.2 Strength of materials and parts >10.2.5 Lifting |
Meets the product standard´s requirements. |
10.2 Strength of materials and parts >10.2.6 Mechanical impact |
Meets the product standard´s requirements. |
10.2 Strength of materials and parts >10.2.7 Inscriptions |
Meets the product standard´s requirements. |
10.3 Degree of protection of ASSEMBLIES |
Does not apply, since the entire switchgear needs to be evaluated. |
10.4 Clearances and creepage distances |
Does not apply, since the entire switchgear needs to be evaluated. |
10.5 Protection against electric shock |
Meets the product standard´s requirements. |
10.6 Incorporation of switching devices and components |
Does not apply, since the entire switchgear needs to be evaluated. |
10.7 Internal electrical circuits and connections |
Meets the product standard´s requirements. |
10.8 Connections for external conductors |
Does not apply, since the entire switchgear needs to be evaluated. |
10.9 Insulation properties >10.9.2 Power-frequency electric strength |
Does not apply, since the entire switchgear needs to be evaluated. |
10.9 Insulation properties >10.9.3 Impulse withstand voltage |
Is the panel builder´s responsibility. |
10.9 Insulation properties >10.9.4 Testing of enclosures made of insulating material |
Is the panel builder´s responsibility. |
10.10 Temperature rise |
Is the panel builder´s responsibility. |
10.11 Short-circuit rating |
Is the panel builder´s responsibility. |
10.12 Electromagnetic compatibility |
Is the panel builder´s responsibility. |
10.13 Mechanical function |
The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices. |
Overload release current setting |
Is the panel builder´s responsibility. The specifications for the switchgear must be observed. |
Adjustment range undelayed short-circuit release |
Is the panel builder´s responsibility. The specifications for the switchgear must be observed. |
With thermal protection |
The device meets the requirements, provided the information in the instruction leaflet (IL) is observed. |
Phase failure sensitive |
225 - 450 A |
Switch off technique |
450 - 6300 A |
Rated operating voltage |
Yes |
Rated permanent current Iu |
Yes |
Rated operation power at AC-3, 230 V |
Electronic |
Rated operation power at AC-3, 400 V |
1000 - 1000 V |
Type of electrical connection of main circuit |
450 A |
Type of control element |
132 kW |
Device construction |
250 kW |
With integrated auxiliary switch |
Screw connection |
With integrated under voltage release |
Rocker lever |
Number of poles |
Built-in device fixed built-in technique |
Rated short-circuit breaking capacity lcu at 400 V, AC |
No |
Degree of protection (IP) |
No |
Height |
3 |
Width |
150 kA |
Depth |
IP20 |
Characteristic curve |
275 mm |
Characteristic curve |
140 mm |
Characteristic curve |
166 mm |