Masterpact NW - Circuit Breaker SCHNEIDER - Free user manual and instructions

Product Type	Low Voltage Power Circuit Breaker
Brand	Schneider Electric
Model	Masterpact NW
Rated Operational Voltage (Ue)	690 V AC
Rated Insulation Voltage (Ui)	1000 V
Rated Impulse Withstand Voltage (Uimp)	12 kV
Rated Current (In)	Up to 6300 A (model dependent)
Breaking Capacity (Icu) at 440 V	65 kA
Number of Poles	3 or 4
Protection Functions	Overload (L), Short-circuit (S, I), Ground fault (G) optional
Control Voltage (Auxiliary)	110-240 V AC/DC
Dimensions (H x W x D)	400 x 210 x 300 mm (approximate, fixed version)
Weight	Approx. 25 kg
Operating Temperature Range	-5°C to +70°C
Mounting Type	Fixed (withdrawable versions available)
Standards	IEC 60947-2
Maintenance	Periodic inspection of contacts, mechanism, and auxiliary circuits
Safety Precautions	Installation and service by qualified personnel only; lock switchgear in isolated position; use PPE
Spare Parts Availability	Contact Schneider Electric for trip units, coils, contacts, etc.
Environmental Compliance	RoHS compliant, recyclable materials

Frequently Asked Questions - Masterpact NW SCHNEIDER

What tools are required for installation?

You will need a screwdriver (as shown in the manual) and torque wrench for tightening connections to specified values (e.g., 3 Nm for auxiliaries, 7 Nm for main terminals).

How do I reset the circuit breaker after a trip?

Ensure the fault is cleared, then turn the operating mechanism to the 'OFF' position and then back to 'ON' after the trip unit resets. For some models, the trip unit may need manual reset.

What is the meaning of the 'discharged' state?

The 'discharged' state indicates the closing springs are not charged. The mechanism must be charged (using the manual charging lever or motor) before the circuit breaker can be closed.

What safety precautions must be taken before maintenance?

Follow the danger warnings: wear appropriate PPE, turn off all power, lock the switchgear in isolated position, use a voltage sensing device to confirm power is off, install safety barriers and signs.

How often should the circuit breaker be maintained?

Schneider recommends periodic inspection every 6-12 months depending on operating conditions. Check for dust, loose connections, and mechanical wear. Lubricate moving parts as per manual.

Can I order spare parts directly from Schneider?

Yes, spare parts such as trip units, coils, contacts, and auxiliary blocks can be ordered from Schneider Electric distributors or via their website using the model Masterpact NW.

What is the rated operational voltage of the Masterpact NW?

The rated operational voltage (Ue) is 690 V AC, with insulation voltage (Ui) of 1000 V AC/DC.

How do I download the full user manual?

The manual is available for free download in PDF format from the product page on Schneider Electric's website or from notice-facile.com. Select your language and enter your email to receive a translation if needed.

What protection functions are available?

The Masterpact NW offers overload protection (L), short-circuit protection (S and I functions), and optional ground fault protection (G) depending on the trip unit installed.

What is the warranty period for this circuit breaker?

Schneider Electric typically offers a 2-year warranty from the date of installation or 3 years from manufacturing date, whichever is earlier. Check the specific terms with your supplier.

USER MANUAL Masterpact NW SCHNEIDER

3D rendering of a mechanical connector with curved cable and terminal blocks (no text or symbols)

Avis de non-responsabilité / Disclaimer / Haftungsausschluss / Rinuncia di responsabilità / Exención de responsabilidad

REMARQUE IMPORTANTE■ L'installation, l'utilisation, la réparation et la maintenance des équipements électriques doivent être assurées par du personnel qualifié uniquement.■ Schneider Electric décline toute responsabilité quant aux conséquences de l'utilisation de ce matériel.	PLEASE NOTE■ Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel■ No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.	BITTE BEACHTEN■ Elektrische Geräte dürfen nur von Fachpersonal installiert, betrieben, bedient und gewartet werden.■ Schneider Electric haftet nicht für Schäden, die durch die Verwendung dieses Materials entstehen.
NOTA■ Manutenzione, riparazione, installazione e uso delle apparecchiature elettriche si devono affidare solo a personale qualificato.■ Schneider Electric non si assume alcuna responsabilità per qualsiasi conseguenza derivante dall'uso di questi prodotti.	TENGA EN CUENTA■ La instalación, manejo, puesta en servicio y mantenimiento de equipos eléctricos deberán ser realizados sólo por personal cualificado.■ Schneider Electric no se hace responsable de ninguna de las consecuencias del uso de este material.

Consignes de sécurité / Safety instructions / Sicherheitshinweise / Informazioni di sicurezza / Información de seguridad

▲ ADANGER / DANGER / GEFAHR / PERICOLO / PELIGRO

RISQUE D'ÉLECTROCUTION, D'EXPLOSION OU D'ECLAIR D'ARC ELECTRIQUE

■ Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462 or local equivalent.

■ This equipment must only be installed and serviced by qualified electrical personnel.

■ Turn off all power supplying this equipment before working on or inside equipment. Lock the switchgear in the isolated position.

■ Always use a properly rated voltage sensing device to confirm power is off.

- Install safety barriers and display a danger sign. - Replace all devices, doors, and covers before turning on power to this equipment.

Failure to follow these instructions will result in death or serious injury.

PELIGRO DE DESCARGA ELÉCTRICA, EXPLOSIÓN O ARCO ELECTRICO

E401453

FAGY461

graph TD
    A["OFF"] --> B["discharged"]
    C["discharged"] --> D["5"]
    style A fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style D fill:#ccf,stroke:#333

Disjoncteur fixe / Fixed circuit breaker / Leistungsschalter in Festeinbau / Interruttore fisso / Interruptor automático fijo

E46147A

E461482

graph TD
    A["OFF"] --> B["RAMP OUT"]
    B --> C["3"]
    C --> D["discharged"]

Outillage nécessaire / Necessary tools / Benötigte Werkzeuge / Utensili necessari / Herramientas necesarias

Line drawing of a screwdriver with a black circular end (no text or symbols)

Installation / Installation / Installation / Installazione / Instalación

Installation / Installation / Installation / Installazione / Instalación

DB117676

DB117677

3 N.m

E46414A

DB117678

3 N.m

7 N.m

Schneider Electric Industries SAS

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