Circuit-breaker, 350 A, 3-pole, with electronic release for motor protection, withdrawableCircuit-breaker NZM3, 3 pole, Rated current = rated uninterrupted current( In = Iu ): 350 A, Installation type: Withdrawable, Screw connection, Standard/Approval: IEC, Protective function: Motor protection
Circuit-breaker, 350 A, 3-pole, with electronic release for motor protection, withdrawable
Circuit-breaker NZM3, 3 pole, Rated current = rated uninterrupted current( In = Iu ): 350 A, Installation type: Withdrawable, Screw connection, Standard/Approval: IEC, Protective function: Motor protection
Product range | Circuit-breaker |
Protective function | Motor protection |
Standard/Approval | |
Installation type | IEC |
Release system | Withdrawable |
Construction size | Electronic release |
Description | NZM3 |
Number of poles | 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. |
Standard equipment | 3 pole |
400/415 V 50 Hz [Icu ] | Screw connection |
Rated current = rated uninterrupted current [In = Iu] | 70 kA |
Overload trip [Ir
] 175 - 350 A
|
350 A |
Standards | 175 - 350 A |
Protection against direct contact | 2 - 14 |
Climatic proofing | IEC/EN 60947 |
Ambient temperature >Ambient temperature, storage |
Finger and back of hand proof to VDE 0106 Part 100 |
Ambient temperature >Operation |
Damp heat, constant, to IEC 60068-2-78 Damp heat, cyclic, to IEC 60068-2-30 |
Mechanical shock resistance (10 ms half-sinusoidal shock) according to IEC 60068-2-27 | - 40 - + 70 °C |
Safe isolation to EN 61140 >Between auxiliary contacts and main contacts |
-25 - +70 °C |
Safe isolation to EN 61140 >between the auxiliary contacts |
20 (half-sinusoidal shock 20 ms) g |
Mounting position | 500 V AC |
Direction of incoming supply | 300 V AC |
Degree of protection >Device |
|
Degree of protection >Enclosures |
as required |
Degree of protection >Terminations |
In the operating controls area: IP20 (basic degree of protection) |
Other technical data (sheet catalogue) | With insulating surround: IP40 With door coupling rotary handle: IP66 |
Rated current = rated uninterrupted current [In = Iu] | Tunnel terminal: IP10 Phase isolator and strip terminal: IP00 |
Rated surge voltage invariability [Uimp
] >Main contacts |
Temperature dependency, Derating |
Rated surge voltage invariability [Uimp
] >Auxiliary contacts |
350 A |
Rated operational voltage [Ue] | 8000 V |
Overvoltage category/pollution degree | 6000 V |
Rated insulation voltage [Ui ] | 690 V AC |
Use in unearthed supply systems | III/3 |
Rated short-circuit making capacity [Icm
] >240 V [Icm ] |
1000 V |
Rated short-circuit making capacity [Icm
] >400/415 V [Icm ] |
≦ 690 V |
Rated short-circuit making capacity [Icm
] >440 V 50/60 Hz [Icm ] |
220 kA |
Rated short-circuit making capacity [Icm
] >525 V 50/60 Hz [Icm ] |
154 kA |
Rated short-circuit making capacity [Icm
] >690 V 50/60 H [Ic] |
143 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 ] |
80 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 ] |
50 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 ] |
100 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 ] |
70 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 ] |
65 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 ] |
36 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 ] |
25 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 ] |
100 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 ] |
70 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] |
65 kA |
Rated short-circuit breaking capacity Icn [Icn ] | 18 kA |
Rated short-time withstand current >t = 0.3 s [Icw ] |
6 kA |
Rated short-time withstand current >t = 1 s [Icw ] |
Maximum back-up fuse, if the expected short-circuit currents at the installation location exceed the switching capacity of the circuit-breaker. |
Utilization category to IEC/EN 60947-2 | 3.3 kA |
Lifespan, mechanical(of which max. 50 % trip by shunt/undervoltage release) [Operations] | 3.3 kA |
Lifespan, electrical >AC-1 >400 V 50/60 Hz [Operations] |
A |
Lifespan, electrical >AC-1 >415 V 50/60 Hz [Operations] |
15000 |
Lifespan, electrical >AC-1 >690 V 50/60 Hz [Operations] |
5000 |
Lifespan, electrical >AC--3 >400 V 50/60 Hz [Operations] |
5000 |
Lifespan, electrical >AC--3 >415 V 50/60 Hz [Operations] |
3000 |
Lifespan, electrical >AC--3 >690 V 50/60 Hz [Operations] |
2000 |
Lifespan, electrical >Max. operating frequency |
2000 |
Total break time at short-circuit | 2000 |
Standard equipment | 60 Ops/h |
Accessories required | < 10 ms |
Optional accessories | Screw connection |
Round copper conductor >Box terminal >Solid |
NZM3-XAVS |
Round copper conductor >Box terminal >Stranded |
Box terminal Tunnel terminal connection on rear |
Round copper conductor >Tunnel terminal >Solid |
2 x 16 mm2 |
Round copper conductor >Tunnel terminal >Stranded >1-hole |
1 x (35 - 240) 2 x (25-120) mm2 |
Round copper conductor >Bolt terminal and rear-side connection >Direct on the switch >Solid |
1 x 16 mm2 |
Round copper conductor >Bolt terminal and rear-side connection >Direct on the switch >Stranded |
1 x (16 - 185) mm2 |
Round copper conductor >Bolt terminal and rear-side connection >Connection width extension >Connection width extension |
1 x 16 2 x 16 mm2 |
Al circular conductor >Tunnel terminal >Solid |
1 x (25 - 240) 2 x (25 - 240) mm2 |
Al circular conductor >Tunnel terminal >Stranded >Stranded |
2 x 300 mm2 |
Al circular conductor >Tunnel terminal >Stranded >Double hole |
1 x 16 mm2 |
Al circular conductor >Tunnel terminal >Stranded |
1 x (25 - 185) 2) mm2 |
Cu strip (number of segments x width x segment thickness) >Box terminal [min.] |
1 x (50 - 240) 2 x (50 - 240) 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.] |
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 [max.] |
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 >Connection width extension |
6 x 16 x 0.8 mm |
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Screw connection |
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 [min.] |
(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 [max.] |
M10 |
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Connection width extension >Connection width extension [max.] |
20 x 5 mm |
Control cables | 30 x 10 + 30 x 5 mm |
Rated operational current for specified heat dissipation [In] | 2 x (10 x 50) mm |
Equipment heat dissipation, current-dependent [Pvid] | 1 x (0.75 - 2.5) 2 x (0.75 - 1.5) mm2 |
Operating ambient temperature min. | 350 A |
Operating ambient temperature max. | 36.75 W |
10.2 Strength of materials and parts >10.2.2 Corrosion resistance |
-25 °C |
10.2 Strength of materials and parts >10.2.3.1 Verification of thermal stability of enclosures |
+70 °C |
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 |
Meets the product standard´s requirements. |
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 | Does not apply, since the entire switchgear needs to be evaluated. |
10.4 Clearances and creepage distances | Meets the product standard´s requirements. |
10.5 Protection against electric shock | Does not apply, since the entire switchgear needs to be evaluated. |
10.6 Incorporation of switching devices and components | Meets the product standard´s requirements. |
10.7 Internal electrical circuits and connections | Does not apply, since the entire switchgear needs to be evaluated. |
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 |
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 | Is the panel builder´s responsibility. |
10.12 Electromagnetic compatibility | The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices. |
10.13 Mechanical function | Is the panel builder´s responsibility. The specifications for the switchgear must be observed. |
Rated permanent current Iu | Is the panel builder´s responsibility. The specifications for the switchgear must be observed. |
Rated voltage | The device meets the requirements, provided the information in the instruction leaflet (IL) is observed. |
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz | 350 A |
Overload release current setting | 690 - 690 V |
Adjustment range short-term delayed short-circuit release | 150 kA |
Adjustment range undelayed short-circuit release | 175 - 350 A |
Integrated earth fault protection | 0 - 0 A |
Type of electrical connection of main circuit | 700 - 4900 A |
Device construction | No |
Suitable for DIN rail (top hat rail) mounting | Screw connection |
DIN rail (top hat rail) mounting optional | Built-in device slide-in technique (withdrawable) |
Number of auxiliary contacts as normally closed contact | No |
Number of auxiliary contacts as normally open contact | No |
Number of auxiliary contacts as change-over contact | 0 |
Switched-off indicator available | 0 |
With under voltage release | 0 |
Number of poles | No |
Position of connection for main current circuit | No |
Type of control element | 3 |
Complete device with protection unit | Back side |
Motor drive integrated | Rocker lever |
Motor drive optional | Yes |
Degree of protection (IP) | No |
Characteristic curve | Yes |
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