Circuit-breaker 4-pole 400 A, system/cable protection+earth-fault protection, withdrawable unitSeries NZM..-AE circuit-breakers cover all application cases with just four compact sizes and are suitable for the IEC market. Modular function groups always make mounting flexible. With electronic actuators for systems and cable protection. Notes: set value in neutral conductor is synchronous with set value Ir of phase conductor. r.m.s. value measurement and thermal memory
Circuit-breaker 4-pole 400 A, system/cable protection+earth-fault protection, withdrawable unit
Series NZM..-AE circuit-breakers cover all application cases with just four compact sizes and are suitable for the IEC market. Modular function groups always make mounting flexible. With electronic actuators for systems and cable protection. Notes: set value in neutral conductor is synchronous with set value Ir of phase conductor. r.m.s. value measurement and thermal memory
Product range | Circuit-breaker |
Protective function | System and cable protection |
Standard/Approval | IEC |
Installation type | Withdrawable |
Release system | Electronic release |
Construction size | NZM3 |
Description | Set value in neutral conductor is synchronous with set value Ir of main pole. R.m.s. value measurement and “thermal memory” Earth-fault release: Not dependent on mains and control voltages Ig = 0.35 - 0.4 - 0.5 - 0.6 - 0.7 - 0.8 - 0.9 - 1.0 x In tg = 0 - 20 - 60 - 100 - 200 - 300 - 500 - 750 - 1000 ms |
Number of poles | 4 pole |
Standard equipment | Screw connection |
400/415 V 50 Hz [Icu ] | 70 kA |
Rated current = rated uninterrupted current [In = Iu] | 400 A |
Neutral conductor [% of phase conductor] | 100 CSA |
Overload trip [Ir
] 200 - 400 A
Technical dataGeneral
Standards |
200 - 400 A |
Protection against direct contact | IEC/EN 60947 |
Climatic proofing | Finger and back of hand proof to VDE 0106 Part 100 |
Ambient temperature >Ambient temperature, storage |
Damp heat, constant, to IEC 60068-2-78 Damp heat, cyclic, to IEC 60068-2-30 |
Ambient temperature >Operation |
- 40 - + 70 °C |
Mechanical shock resistance (10 ms half-sinusoidal shock) according to IEC 60068-2-27 | -25 - +70 °C |
Safe isolation to EN 61140 >Between auxiliary contacts and main contacts |
20 (half-sinusoidal shock 20 ms) g |
Safe isolation to EN 61140 >between the auxiliary contacts |
500 V AC |
Mounting position | 300 V AC |
Direction of incoming supply | |
Degree of protection >Device |
as required |
Degree of protection >Enclosures |
In the operating controls area: IP20 (basic degree of protection) |
Degree of protection >Terminations |
With insulating surround: IP40 With door coupling rotary handle: IP66 |
Other technical data (sheet catalogue) | Tunnel terminal: IP10 Phase isolator and strip terminal: IP00 |
Rated current = rated uninterrupted current [In = Iu] | Temperature dependency, Derating |
Rated surge voltage invariability [Uimp
] >Main contacts |
400 A |
Rated surge voltage invariability [Uimp
] >Auxiliary contacts |
8000 V |
Rated operational voltage [Ue] | 6000 V |
Overvoltage category/pollution degree | 690 V AC |
Rated insulation voltage [Ui ] | III/3 |
Use in unearthed supply systems | 1000 V |
Rated short-circuit making capacity [Icm
] >240 V [Icm ] |
≦ 690 V |
Rated short-circuit making capacity [Icm
] >400/415 V [Icm ] |
220 kA |
Rated short-circuit making capacity [Icm
] >440 V 50/60 Hz [Icm ] |
154 kA |
Rated short-circuit making capacity [Icm
] >525 V 50/60 Hz [Icm ] |
143 kA |
Rated short-circuit making capacity [Icm
] >690 V 50/60 H [Ic] |
80 kA |
Rated short-circuit breaking capacity Icn [Icn
] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >240 V 50/60 Hz [Icu ] |
50 kA |
Rated short-circuit breaking capacity Icn [Icn
] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >400/415 V 50/60 Hz [Icu ] |
100 kA |
Rated short-circuit breaking capacity Icn [Icn
] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >440 V 50/60 Hz [Icu ] |
70 kA |
Rated short-circuit breaking capacity Icn [Icn
] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >525 V 50/60 Hz [Icu ] |
65 kA |
Rated short-circuit breaking capacity Icn [Icn
] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >690 V 50/60 Hz [Icu ] |
36 kA |
Rated short-circuit breaking capacity Icn [Icn
] >Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >240 V 50/60 Hz [Ics ] |
25 kA |
Rated short-circuit breaking capacity Icn [Icn
] >Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >400/415 V 50/60 Hz [Ics ] |
100 kA |
Rated short-circuit breaking capacity Icn [Icn
] >Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >440 V 50/60 Hz [Ics ] |
70 kA |
Rated short-circuit breaking capacity Icn [Icn
] >Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >525 V 50/60 Hz [Ics ] |
65 kA |
Rated short-circuit breaking capacity Icn [Icn
] >Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >690 V 50/60 Hz [Ics] |
18 kA |
Rated short-circuit breaking capacity Icn [Icn ] | 6 kA |
Rated short-time withstand current >t = 0.3 s [Icw ] |
Maximum back-up fuse, if the expected short-circuit currents at the installation location exceed the switching capacity of the circuit-breaker. |
Rated short-time withstand current >t = 1 s [Icw ] |
3.3 kA |
Utilization category to IEC/EN 60947-2 | 3.3 kA |
Lifespan, mechanical(of which max. 50 % trip by shunt/undervoltage release) [Operations] | A |
Lifespan, electrical >AC-1 >400 V 50/60 Hz [Operations] |
15000 |
Lifespan, electrical >AC-1 >415 V 50/60 Hz [Operations] |
5000 |
Lifespan, electrical >AC-1 >690 V 50/60 Hz [Operations] |
5000 |
Lifespan, electrical >AC--3 >400 V 50/60 Hz [Operations] |
3000 |
Lifespan, electrical >AC--3 >415 V 50/60 Hz [Operations] |
2000 |
Lifespan, electrical >AC--3 >690 V 50/60 Hz [Operations] |
2000 |
Lifespan, electrical >Max. operating frequency |
2000 |
Total break time at short-circuit | 60 Ops/h |
Standard equipment | < 10 ms |
Accessories required | Screw connection |
Optional accessories | NZM3-4-XAVS |
Round copper conductor >Box terminal >Solid |
Box terminal Tunnel terminal connection on rear |
Round copper conductor >Box terminal >Stranded |
2 x 16 mm2 |
Round copper conductor >Tunnel terminal >Solid |
1 x (35 - 240) 2 x (25-120) mm2 |
Round copper conductor >Tunnel terminal >Stranded >1-hole |
1 x 16 mm2 |
Round copper conductor >Bolt terminal and rear-side connection >Direct on the switch >Solid |
1 x (16 - 185) mm2 |
Round copper conductor >Bolt terminal and rear-side connection >Direct on the switch >Stranded |
1 x 16 2 x 16 mm2 |
Round copper conductor >Bolt terminal and rear-side connection >Connection width extension >Connection width extension |
1 x (25 - 240) 2 x (25 - 240) mm2 |
Al circular conductor >Tunnel terminal >Solid |
2 x 300 mm2 |
Al circular conductor >Tunnel terminal >Stranded >Stranded |
1 x 16 mm2 |
Al circular conductor >Tunnel terminal >Stranded >Double hole |
1 x (25 - 185) 2) mm2 |
Al circular conductor >Tunnel terminal >Stranded |
1 x (50 - 240) 2 x (50 - 240) mm2 |
Cu strip (number of segments x width x segment thickness) >Box terminal [min.] |
2) Up to 240 mm² can be connected depending on the cable manufacturer. |
Cu strip (number of segments x width x segment thickness) >Box terminal [max.] |
6 x 16 x 0.8 mm |
Cu strip (number of segments x width x segment thickness) >Bolt terminal and rear-side connection >Flat copper strip, with holes [min.] |
10 x 24 x 1.0 + 5 x 24 x 1.0 (2 x) 8 x 24 x 1.0 mm |
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 32 x 1.0 + 5 x 32 x 1.0 mm |
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Screw connection |
(2 x) 10 x 50 x 1.0 mm |
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Direct on the switch [min.] |
M10 |
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Direct on the switch [max.] |
20 x 5 mm |
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Connection width extension >Connection width extension [max.] |
30 x 10 + 30 x 5 mm |
Control cables | 2 x (10 x 50) mm |
Rated operational current for specified heat dissipation [In] | 1 x (0.75 - 2.5) 2 x (0.75 - 1.5) mm2 |
Equipment heat dissipation, current-dependent [Pvid] | 400 A |
Operating ambient temperature min. | 72 W |
Operating ambient temperature max. | -25 °C |
10.2 Strength of materials and parts >10.2.2 Corrosion resistance |
+70 °C |
10.2 Strength of materials and parts >10.2.3.1 Verification of thermal stability of enclosures |
Meets the product standard´s requirements. |
10.2 Strength of materials and parts >10.2.3.2 Verification of resistance of insulating materials to normal heat |
Meets the product standard´s requirements. |
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 |
Does not apply, since the entire switchgear needs to be evaluated. |
10.2 Strength of materials and parts >10.2.7 Inscriptions |
Does not apply, since the entire switchgear needs to be evaluated. |
10.3 Degree of protection of ASSEMBLIES | Meets the product standard´s requirements. |
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 | Does not apply, since the entire switchgear needs to be evaluated. |
10.8 Connections for external conductors | Is the panel builder´s responsibility. |
10.9 Insulation properties >10.9.2 Power-frequency electric strength |
Is the panel builder´s responsibility. |
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 | The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices. |
10.12 Electromagnetic compatibility | Is the panel builder´s responsibility. The specifications for the switchgear must be observed. |
10.13 Mechanical function | Is the panel builder´s responsibility. The specifications for the switchgear must be observed. |
Rated permanent current Iu | The device meets the requirements, provided the information in the instruction leaflet (IL) is observed. |
Rated voltage | 400 A |
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz | 690 - 690 V |
Overload release current setting | 150 kA |
Adjustment range short-term delayed short-circuit release | 200 - 400 A |
Adjustment range undelayed short-circuit release | 0 - 0 A |
Integrated earth fault protection | 800 - 4400 A |
Type of electrical connection of main circuit | Yes |
Device construction | Screw connection |
Suitable for DIN rail (top hat rail) mounting | Built-in device slide-in technique (withdrawable) |
DIN rail (top hat rail) mounting optional | No |
Number of auxiliary contacts as normally closed contact | No |
Number of auxiliary contacts as normally open contact | 0 |
Number of auxiliary contacts as change-over contact | 0 |
With switched-off indicator | 0 |
With under voltage release | No |
Number of poles | No |
Position of connection for main current circuit | 4 |
Type of control element | Back side |
Complete device with protection unit | Rocker lever |
Motor drive integrated | Yes |
Motor drive optional | No |
Degree of protection (IP) | Yes |
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