# Thermal Magnetic Circuit Breaker, Moulded Case, NZMN, 125 A, 3 Pole, 415 V, DIN Rail

![Product image](https://novapart.co/image/farnell:1461848/)

**URL**: https://novapart.co/products/NZMN2-M125/thermal-magnetic-circuit-breaker-moulded-case-nzmn
**SKU**: NZMN2-M125
**Manufacturer**: EATON MOELLER
**Category**: Circuit Protection || Circuit Breakers || Thermal Magnetic Circuit Breakers
**Price**: €1596.4500
**Stock**: 10+
**Lead Time**: 50 days (indicative)

## Description

Product Range:NZMN Series; Current Rating:125A; No. of Poles:3 Pole; Voltage Rating V DC:-; Voltage Rating VAC:415VAC; Circuit Breaker Mounting:DIN Rail; SVHC:No SVHC (17-Dec-2015); B

## Specifications

| Parameter | Value |
|---|---|
| No. Of Poles | 3 Pole |
| Product Range | NZMN |
| Current Rating | 125A |
| Voltage Rating Vac | 415V |
| Voltage Rating Vdc | - |
| Circuit Breaker Mounting | DIN Rail |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:1461848/)

## Type: **NZMN2−M125** Article No.: **265723** Sales text **Circuit−breaker 3p 125A motor protection** 

|**Ordering information**||||
|---|---|---|---|
|Number of poles|||3−pole|
|Description|||Terminal screws standard,<br>terminals as accessories|
|Rated current = rated uninterrupted<br>current|_I_u|A|125|
|Setting range||||
|Overload releases|_I_r|A|100...125|
|Non−delayed short−circuit release||A|1000...1750|
|Motor rating AC−3 at 400 V 50/60 Hz|_P_|kW|55|
|Rated operational current AC−3 at 400<br>V 50/60 Hz|_I_e|A|99|
|Switching capacity||||
|Switching capacity||kA|50|
|Release system|||Thermomagnetic release|
|Frame size|||NZM2|



## **Notes concerning the product group** 

IEC/EN 60947−4−1 and IEC/EN 60947−2 

The circuit−breaker fulfills all requirements for AC 3 switching category 

Adjustable overload releases _I_ r 

**1** 

• 0.8 ... 1 × _I_ 

- n 

- • (ex−works 0.8 × _I_ 

n • ) 

− NZM...1−M...: with single phasing sensitivity 

- Tripping class 10 A 

Adjustable short−circuit releases _I_ i 

- 8 ... 14 × _I_ n (ex−works 12 × _I_ n) 

− NZMH2−M32: 10 ... 14 × _I_ n (ex−works 12 × _I_ n) 

− NZM...1−M100: 8 ... 12.5 × _I_ n (ex−works 12 × _I_ n) 

Fixed short−circuit release _I_ i 

- 350 A at _I_ n = 20 ... 25 A 

|**Tripping**|**Tripping time**|**Tripping time****_T_p with load on all poles of 7.2 times current setting**|
|---|---|---|
|**class**|**value**||
|250 A|2 s <_T_p|10 s|
|10|2 s <_T_p|10 s|
|20|6 s <_T_p|20 s|
|30|9 s <_T_p|30 s|



## **Notes concerning the product group** 

Notes for terminals  262240 

## **General** 

|Standards||IEC/EN 60947|
|---|---|---|
|Protection against direct contact||Finger and back of hand proof<br>to VDE 0106 Part 100|
|||Damp heat, constant,|
|Climatic proofing||according to IEC 60068−2−78<br>Damp heat, cyclical to IEC|
|||60068−2−30|
|Ambient temperature|||
|Ambient temperature, Storage|°C|... 25...+70|
|Operation|°C|... 25...+70|
|Mechanical shock resistance (IEC/EN|||
|60068−2−27)|||



**2** 

|Shock resistance||g|20 (half−sinusoidal shock 20<br>ms)|
|---|---|---|---|
|Safe isolation to VDE 0106 Part 101||||
|and Part 101/A1||||
|Between auxiliary contacts and main<br>contacts||V AC|500|
|between the auxiliary contacts||V AC|300|
|Dimensions||||
|Weight||||
|Weight||kg|2,345|
|Mounting position||||
|Direction of incoming supply|||As required|
|Degree of protection||||
||||In the operating controls area:|
|Device|||IP20 (basic degree of|
||||protection)|
||||With insulating surround:|
|Enclosures|||IP40, with door coupling|
||||rotary handle: IP66|
||||Tunnel terminal: IP10|
|Terminations|||Phase isolator and strip|
||||terminal: IP00|
|Lifespan||||
|Releases||||
|Electrical lifespan at 8 A/230 V AC/70<br>°C|Operations||7500|
|**Circuit−breakers**||||
|Rated impulse withstand voltage_U_imp||||
|Main contacts||V|8000|
|Auxiliary contacts||V|6000|
|Rated operational voltage|_U_e|V AC|690|
|Overvoltage category/pollution<br>degree|||III/3|
|Rated insulation voltage|_U_i|V|1000|
|For use in IT electrical power<br>networks||V|690|
|**Switching capacity**||||
|Rated short−circuit making capacity||||
|240 V|_I_cm|kA|187|
|400/415 V|_I_cm|kA|105|
|440 V|_I_cm|kA|74|
|525 V|_I_cm|kA|53|



**3** 

|690 V|_I_cm|kA|40|
|---|---|---|---|
|Rated short−circuit breaking capacity||||
|_I_cn||||
|_I_cuto IEC/EN 60947 operating||||
|sequence O−t−CO||||
|240 V 50/60 Hz|_I_cu|kA|85|
|400/415 V 50/60 Hz|_I_cu|kA|50|
|415 V AC|_I_cu|kA|50|
|440 V 50/60 Hz|_I_cu|kA|35|
|525 V 50/60 Hz|_I_cu|kA|25|
|690 V 50/60 Hz|_I_cu|kA|20|
|500 V DC|_I_cu|kA|30|
|750 V DC|_I_cu|kA|30|
|_I_cuto IEC/EN 60947 operating||||
|sequence O−t−CO−t−CO||||
|240 V 50/60 Hz|_I_cs|kA|85|
|400/415 V 50/60 Hz|_I_cs|kA|50|
|415 V AC|_I_cs|kA|50|
|up to 440 V 50/60 Hz|_I_cs|kA|35|
|525 V 50/60 Hz|_I_cs|kA|25|
|up to 690 V 50/60 Hz|_I_cs|kA|5|
|690 V AC|_I_cs|kA|10|
|Maximum low−voltage h.b.c. fuse||A<br>gG/gL|355|
|**Technical data, divergent from the**||||
|**products for the IEC**||||
|**market**Switching capacity NA||||
|switches (UL489, CSA 22.2 No. 5.1)||||
|240 V 60 Hz||kA|85|
|480V 60Hz||kA|35|
|600 V 60 Hz||kA|25|
|Utilization category to IEC/EN<br>60947−2|||A|
|Rated short−time withstand current||||
|t = 0.3 s|_I_cw|kA|1,9|
|t = 1 s|_I_cw|kA|1,9|
|Lifespan, mechanical|Operations||20000|
|Maximum operating frequency||||
|Max. operating frequency||Ops/h|120|
|Lifespan, electrical||||



**4** 

|AC−1||||
|---|---|---|---|
|400/415 V 50/60 Hz|Operations||10000|
|415 V|Operations||10000|
|690 V 50/60 Hz|Operations||7500|
|AC–−3||||
|400/415 V 50/60 Hz|Operations||6500|
|415 V|Operations||6500|
|690 V 50/60 Hz|Operations||5000|
|DC – −1||||
|500 V DC|Operations||7500|
|750 V DC|Operations||7500|
|DC – 3||||
|500 V DC|Operations||3000|
|750 V DC|Operations||> 3000|
|Current heat loss per pole at_I_u||W|19|
|Current heat loss (3−pole) at_I_u||W|19|
|Overload releases||||
|to IEC/EN 60947, VDE 0660||||
|Temperature compensation to||||
|IEC/EN 60947 Residual error in the<br>range −25 °C/+70 °C (reference||%/K|0|
|temperature 30 °C)||||
|Temperature compensation|||0|
|Total opening delay at short−circuit||ms|< 10|
|**Terminal capacities**||||
|Standard equipment|||Screw terminal|
||||Box terminal|
|Accessories|||Tunnel terminal|
||||Connection on rear|
|Rated power of coil||||
|Box terminal||||
|Solid||mm2|1 × (4 – 16)<br>2 × (4 – 16)|
|Stranded||mm2|1 × (25 – 185)<br>2 × (25 – 70)|
|Tunnel terminal||||
|Solid||mm2|1 × 16|
|Stranded||||
|Single hole||mm2|1 × (25 – 185)|
|Bolt terminal and rear−side||||



**5** 

|connection||||
|---|---|---|---|
|Direct on the switch||||
|Solid||mm2|1 × (4 – 16)<br>2 × (4 – 16)|
|Stranded||mm2|1 × (25 – 185)<br>2 × (25 – 70)|
|Al conductors, Cu cable||||
|Tunnel terminal||||
|Solid||mm2|1 × 16|
|Stranded||||
||||1 × (25 – 185)|
|Single hole||mm2|je nach Kabelhersteller bis zu|
||||240 mm² anschließbar|
|Bolt terminal and rear−side||||
|connection||||
|Direct on the switch||||
|Solid||mm2|1 × (10 – 16)<br>2 × (10 – 16)|
|Stranded||mm2|1 × (25 – 50)<br>2 × (25 – 50)|
|Cu strip (number of segments x width||||
|x segment thickness)||||
|Box terminal||||
||min.|mm2|2 × 9 × 0.8|
||max.|mm2|10 × 16 × 0.8|
|Bolt terminal and rear−side||||
|connection||||
|Flat copper strip, with holes|min.|mm|2 × 16 × 0.8|
|Flat copper strip, with holes|max.|mm|10 × 16 × 0.8|
|Copper busbar (width × thickness)||||
|Bolt terminal and rear−side||||
|connection||||
|Screw connection|||M8|
|Direct on the switch||||
||min.|mm2|16 × 5|
||max.|mm2|20 × 5|
|**Notes**||||
|**Notes**|||For rated operational voltage|
||||the following applies: DC|
||||voltage values on request|
||||For switching capacity of NA|
||||switches with NZM...1−...NA|



**6** 

the following applies: 480Y/277 V from 60 A For rated operational current AC−3 at NZMB2, NZMN2, NZMH2, NZM4 the following applies: 400 V: max. 650 kW; 600 V: max. 600 kW For switching capacity of NA switches with NZML2 and NZML3 the following applies: current limiting switch to UL489 For overload release temperature compensation NZM2 thermomagnetic the following applies: with NZM1...1−...160: 0.4 For switching capacity of NA switches with NZML4 at 240 V 60 Hz the following applies: please enquire The current heat loss per pole ratings refer to the maximum current rating of the frame size. 

## **Mounting position** 

Vertical and 90° in all directions 

With plug−in adapter NZM2, N(S)2: vertical, 90° right/left 

with residual current release NZM2: vertical and 90° to all directions 

With withdrawable unit NZM3, N(S)3: vertical, 90° left NZM4, N(S)4: vertical with remote operator: NZM2, N(S)2, NZM3, N(S)3, NZM4, N(S)4: vertical and 90° to all directions 

## **Overview** 

Basic equipment 

Box terminal – – – Screw connection – Accessories Box terminal – – Screw connection – – Tunnel terminal Connection on rear 

**7** 

Flat conductor terminal – – – 

## **Notes** 

For rated operational voltage switching on 3 contacts the following applies: DC correction factor for instantaneous release response value NZM1: 1.25, NZM2: 1.35 

Setting for _I_ i at DC = setting _I_ i AC/DC correction factor 

Details apply for 3−pole system protection circuit−breaker with thermomagnetic release NZM(H)1(2)−A... 

**Switching of one pole via two series contacts** 

Switching of one pole via three series contacts 

For NA switch switching capacity with NZM...1−...(C)NA the following applies: 480 Y/277 V from 60 A 

For AC−3 rated operational current with NZM4 the following applies: 400 V: max. 650 kW; 690 V: max. 600 kW 

For NA switch switching capacity with NZML2 and NZML3 the following applies: Current Limiting switch to UL489 

For 3−pole system protection circuit−breaker the AC−3 specification is not applicable 

For NA switch switching capacity with NZML4 at 240 V 60 Hz the following applies: on request 

For current heat loss per pole the specification refers to the maximum nominal current of the frame size. 

For 3−pole system protection circuit−breaker the following applies: 690 V 

For 3−pole system protection circuit−breaker the following applies: 400/415 V 7500 switching operations 

Maximum back−up fuse, if the expected short−circuit currents at the installation location exceed the switching capacity of the circuit−breaker. 

1600 A 

Higher switching capacity on request 

## **Notes** 

XSV = plug−in unit 

XAV = withdrawable unit 

TM = thermomagnetic 

E = electronic 

**8** 

## **Dimensions** 

Blow out area, minimum distance to other parts  35 mm Minimum distance to adjacent parts  5 mm 

## **Dimensions** 

**9** 

**Characteristic curve** 

**10** 

Motor protection with NZM2 

**Characteristic curve** 

**11** 

## **Characteristic curve** 

**12** 

Let−through current _î_ D Let−through energy _I[2] t_ 

## **Characteristic curve** 

**13** 

1 half−shaft 

Moeller GmbH, Hein−Moeller−Str. 7−11, D−53115 Bonn E−Mail: catalog@moeller.net, Internet: www.moeller.net, http://catalog.moeller.net Copyright 2006 by Moeller GmbH. HPL−C2007G V2.1 

**14** 



## Links

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- [Supplier page](https://es.farnell.com/eaton-moeller/nzmn2-m125/mccb-125a-50ka-3p-motor-protect/dp/1461848)
---

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