# Thermal Magnetic Circuit Breaker, MCCB, NZM3, 3P, 50 kA, 400 V, 450 A
**URL**: https://novapart.co/products/NZMN3-ME450/thermal-magnetic-circuit-breaker-mccb-nzm3-3p-50
**SKU**: NZMN3-ME450
**Manufacturer**: EATON MOELLER
**Category**: Circuit Protection || Circuit Breakers || Thermal Magnetic Circuit Breakers
**Price**: €2217.6300
**Stock**: 10+
**Lead Time**: 50 days (indicative)
## Specifications
| Parameter | Value |
|---|---|
| Svhc | No SVHC (17-Dec-2015) |
| Product Range | NZM Series |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:3501203/)
**DATASHEET - NZMN3-ME450**
## **Circuit-breaker, 3p, 450A**
**Part no. NZMN3-ME450 Catalog No. 284468** ) **EL-Nummer 0004315588** j **(Norway)**
## **Delivery program**
|**Deliveryy programrogramgramram**||||
|---|---|---|---|
|Product range|||Circuit-breaker|
|Protective function|||Motor protection|
|||||
|Standard/Approval|||IEC|
|Installation type|||Fixed|
|Release system|||Electronic release|
|Construction size|||NZM3|
|Description|||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.|
|Number of poles|||3 pole|
|Standard equipment|||Screw connection|
|**Switching capacity**||||
|400/415 V 50 Hz|Icu|kA|50|
|Rated current = rated uninterrupted current|In= Iu|A|450|
|**Setting range**||||
|Overload trip||||
||Ir|A|225 - 450|
|Short-circuit releases
|
| >||||
|Non-delayed|Ii= Inx …||2 - 12|
|**Motor rating AC-3 50/60 Hz**||||
|380 V 400 V|P|kW|250|
|660 V 690 V|P|kW|450|
|**Motor rating AC-3 50/60 Hz**||||
|400 V|P|kW|250|
|660 V 690 V|P|kW|450|
|**Rated operational current AC-3 50/60 Hz**||||
|400 V|Ie|A|437|
|690 V||A|446|
|**Technical data**|**Technical data**|||||
|---|---|---|---|---|---|
|**General**||||||
||Standards|||IEC/EN 60947|IEC/EN 60947|
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Finger and back of hand proof to VDE 0106 Part 100
Protection against direct contact
Damp heat, constant, to IEC 60068-2-78 Damp heat, cyclic, to IEC 60068-2-30
||Ambient temperature||||||
|---|---|---|---|---|---|---|
||Ambient temperature, storage||°C|- 40 - + 70|||
||Operation||°C|-25 - +70|||
||Mechanical shock resistance (10 ms half-sinusoidal shock) according to IEC||g|20 (half-sinusoidal shock 20 ms)|||
||60068-2-27||||||
||Safe isolation to EN 61140||||||
||Between auxiliary contacts and main contacts||V AC|500|||
||between the auxiliary contacts||V AC|300|||
||Weight||kg|6.34|||
||Mounting position|||Vertical and 90° in all directions|Vertical and 90° in all directions||
|||||LZ
aap
I||With XFI earth-fault release:
- NZM1, N1, NZM2, N2: vertical and
90° in all directions
with plug-in unit
- NZM1, N1, NZM2, N2: vertical, 90°
right/left|
|||||||with withdrawable unit:|
|||||||- NZM3, N3: vertical, 90° right/left|
|||||||- NZM4, N4: vertical|
|||||||with remote operator:|
|||||||- NZM2, N(S)2, NZM3, N(S)3,|
|||||||NZM4, N(S)4: vertical and 90° in all|
|||||||directions|
||Direction of incoming supply|||as required|||
||Degree of protection||||||
||Device|||In the operating controls area: IP20 (basic degree of protection)||In the operating controls area: IP20 (basic degree of protection)|
||Enclosures|||With insulating surround: IP40|||
|||||With door coupling rotary handle: IP66|||
||Terminations|||Tunnel terminal: IP10|||
|||||Phase isolator and strip terminal: IP00|||
||Other technical data (sheet catalogue)|||Temperature dependency, Derating|||
|**Circuit-breakers**|||||||
||Rated current = rated uninterrupted current|In= Iu|A|450|||
||Rated surge voltage invariability|Uimp|||||
||Main contacts||V|8000|||
||Auxiliary contacts||V|6000|||
||Rated operational voltage|Ue|V AC|690|||
||Overvoltage category/pollution degree|||III/3|||
||Rated insulation voltage|Ui|V|1000|||
||Use in unearthed supply systems||V|≦ 690|||
|**Switching capacity**|||||||
||Rated short-circuit making capacity|Icm|||||
||240 V|Icm|kA|187|||
||400/415 V|Icm|kA|105|||
||440 V 50/60 Hz|Icm|kA|74|||
||525 V 50/60 Hz|Icm|kA|53|||
||690 V 50/60 H|Ic|kA|40|||
||Rated short-circuit breaking capacity Icn|Icn|||||
||Icu to IEC/EN 60947 test cycle O-t-CO|Icu|kA||||
||240 V 50/60 Hz|Icu|kA|85|||
||400/415 V 50/60 Hz|Icu|kA|50|||
||440 V 50/60 Hz|Icu|kA|35|||
||525 V 50/60 Hz|Icu|kA|25|||
||690 V 50/60 Hz|Icu|kA|20|||
||Ics to IEC/EN 60947 test cycle O-t-CO-t-CO|Ics|kA||||
||240 V 50/60 Hz|Ics|kA|85|||
||400/415 V 50/60 Hz|Ics|kA|50|||
||440 V 50/60 Hz|Ics|kA|35|||
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|525 V 50/60 Hz|Ics|kA|13|
|---|---|---|---|
|690 V 50/60 Hz|Ics|kA|5|
||||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 = 0.3 s|Icw|kA|3.3|
|t = 1 s|Icw|kA|3.3|
|Utilization category to IEC/EN 60947-2|||A|
|Lifespan, mechanical(of which max. 50 % trip by shunt/undervoltage release)|Operations||15000|
|Lifespan, electrical||||
|AC-1||||
|400 V 50/60 Hz|Operations||5000|
|415 V 50/60 Hz|Operations||5000|
|690 V 50/60 Hz|Operations||3000|
|AC--3||||
|400 V 50/60 Hz|Operations||2000|
|415 V 50/60 Hz|Operations||2000|
|690 V 50/60 Hz|Operations||2000|
|Max. operating frequency||Ops/h|60|
|Total break time at short-circuit||ms|< 10|
|**Terminal capacity**||||
|Standard equipment|||Screw connection|
|Optional accessories|||Box terminal
Tunnel terminal
connection on rear|
|Round copper conductor||||
|Box terminal||||
|Solid||mm2|2 x 16|
|Stranded||mm2|1 x (35 - 240)
2 x (25-120)|
|Tunnel terminal||||
|Solid||mm2|1 x 16|
|Stranded||||
|1-hole||mm2|1 x (16 - 185)|
|Double hole ftting||mm2|2 x (50 - 240)|
|Bolt terminal and rear-side connection||||
|Direct on the switch||||
|Solid||mm2|1 x 16
2 x 16|
|Stranded||mm2|1 x (25 - 240)
2 x (25 - 240)|
|Connection width extension||mm2||
|Connection width extension||mm2|2 x 300|
|Al circular conductor||||
|Tunnel terminal||||
|Solid||mm2|1 x 16|
|Stranded||||
|Stranded||mm2|1 x (25 - 185)2)|
|Double hole||mm2|1 x (50 - 240)
2 x (50 - 240)|
||||2)Up to 240 mm² can be connected depending on the cable manufacturer.|
|Bolt terminal and rear-side connection||||
|Direct on the switch||||
|Solid||mm2|1 x 16
2 x (10 - 16)|
|Stranded||mm2|1 x (25 - 120)
2 x (25 - 120)|
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Cu strip (number of segments x width x segment thickness) Box terminal
|Cu strip (number of segments x width x segment thickness)||||
|---|---|---|---|
|Box terminal||||
||min.|mm|6 x 16 x 0.8|
||max.|mm|10 x 24 x 1.0
+ 5 x 24 x 1.0
(2 x) 8 x 24 x 1.0|
|Bolt terminal and rear-side connection||||
|Flat copper strip, with holes|min.|mm|6 x 16 x 0.8|
|Flat copper strip, with holes|max.|mm|10 x 32 x 1.0 + 5 x 32 x 1.0|
|Connection width extension||mm|(2 x) 10 x 50 x 1.0|
|Copper busbar (width x thickness)|mm|||
|Bolt terminal and rear-side connection||||
|Screw connection|||M10|
|Direct on the switch||||
||min.|mm|20 x 5|
||max.|mm|30 x 10
+ 30 x 5|
|Connection width extension||mm||
|Connection width extension|max.|mm|2 x (10 x 50)|
|Control cables||||
|||mm2|1 x (0.75 - 2.5)
2 x (0.75 - 1.5)|
|**Design verifcation asper IEC/EN 61439**|**Design verifcation asper IEC/EN 61439**|**Design verifcation asper IEC/EN 61439**|**Design verifcation asper IEC/EN 61439**|
|---|---|---|---|
|
Technical data for design verifcation||||
|
Rated operational current for specifed heat dissipation|In|A|450|
|Equipment heat dissipation, current-dependent|Pvid|W|60.75|
|Operating ambient temperature min.||°C|-25|
|Operating ambient temperature max.||°C|70|
|IEC/EN 61439 design verifcation||||
|
10.2 Strength of materials and parts||||
|10.2.2 Corrosion resistance|||Meets the product standard's requirements.|
|10.2.3.1 Verifcation of thermal stability of enclosures|||Meets the product standard's requirements.|
|
10.2.3.2 Verifcation of resistance of insulating materials to normal heat|||Meets the product standard's requirements.|
|
10.2.3.3 Verifcation of resistance of insulating materials to abnormal heat
and fre due to internal electric efects|||Meets the product standard's requirements.|
|
10.2.4 Resistance to ultra-violet (UV) radiation|||Meets the product standard's requirements.|
|10.2.5 Lifting|||Does not apply, since the entire switchgear needs to be evaluated.|
|10.2.6 Mechanical impact|||Does not apply, since the entire switchgear needs to be evaluated.|
|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|||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|||Does not apply, since the entire switchgear needs to be evaluated.|
|10.7 Internal electrical circuits and connections|||Is the panel builder's responsibility.|
|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.|
|10.9.3 Impulse withstand voltage|||Is the panel builder's responsibility.|
|10.9.4 Testing of enclosures made of insulating material|||Is the panel builder's responsibility.|
|10.10 Temperature rise|||The panel builder is responsible for the temperature rise calculation. Eaton will
provide heat dissipation data for the devices.|
|10.11 Short-circuit rating|||Is the panel builder's responsibility. The specifcations for the switchgear must be
observed.|
|10.12 Electromagnetic compatibility|||Is the panel builder's responsibility. The specifcations for the switchgear must be
observed.|
|10.13 Mechanical function|||The device meets the requirements, provided the information in the instruction
leafet (IL) is observed.|
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## **Technical data ETIM 7.0**
Low-voltage industrial components (EG000017) / Motor protection circuit-breaker (EC000074)
Electric engineering, automation, process control engineering / Low-voltage switch technology / Circuit breaker (LV < 1 kV) / Motor protection circuit-breaker (ecl@ss10.0.1-27-37-04-01 [AGZ529016])
|**Technical data ETIM 7.0**|**Technical data ETIM 7.0**|**Technical data ETIM 7.0**|**Technical data ETIM 7.0**|
|---|---|---|---|
|Low-voltage industrial components (EG000017) / Motor protection circuit-breaker (EC000074)||||
|Electric engineering, automation, process control engineering / Low-voltage switch technology / Circuit breaker (LV < 1 kV) / Motor protection circuit-breaker (ecl@ss10.0.1-27-37-04-01
[AGZ529016])||||
|Overload release current setting||A|225 - 450|
|Adjustment range undelayed short-circuit release||A|450 - 6300|
|With thermal protection|||Yes|
|Phase failure sensitive|||Yes|
|Switch of technique|||Electronic|
|
Rated operating voltage||V|690 - 690|
|Rated permanent current Iu||A|450|
|Rated operation power at AC-3, 230 V||kW|132|
|Rated operation power at AC-3, 400 V||kW|250|
|Type of electrical connection of main circuit|||Screw connection|
|Type of control element|||Rocker lever|
|Device construction|||Built-in device fxed built-in technique|
|With integrated auxiliary switch|||
No|
|With integrated under voltage release|||No|
|Number of poles|||3|
|Rated short-circuit breaking capacity lcu at 400 V, AC||kA|50|
|Degree of protection (IP)|||IP20|
|Height||mm|275|
|Width||mm|140|
|Depth||mm|166|
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## **Characteristics**
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Let-through current
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Let-through energy
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**Dimensions**
① Blow out area, minimum clearance to adjacent parts ② Minimum clearance to adjacent parts
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## **Additional product information (links)**
**IL01208009Z (AWA1230-1992) Circuit-Breaker, basic unit** IL01208009Z (AWA1230-1992) Circuit-Breaker, ftp://ftp.moeller.net/DOCUMENTATION/AWA_INSTRUCTIONS/IL01208009Z2018_11.pdf basic unit Temperature dependency, Derating http://ecat.moeller.net/flip-cat/?edition=HPLEN&startpage=17.172 additional technical information for NZM ftp://ftp.moeller.net/DOCUMENTATION/PDF/nzm_technic_de_en.pdf power switch
Eaton Industries GmbH http://www.eaton.eu © 06/2020 by Eaton Industries GmbH Eaton 284468 ED2020 V69.0 EN
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## Links
- [View this product on Novapart](https://novapart.co/products/NZMN3-ME450/thermal-magnetic-circuit-breaker-mccb-nzm3-3p-50)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/eaton-moeller/nzmn3-me450/mccb-450a-50ka-motor-type/dp/3501203)
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