Nader NDM3Z 2P/3P/4P DC Circuit Breaker 500V-1500V

Name: Nader NDM3Z 2P/3P/4P DC Circuit Breaker 500V-1500V
Brand: Chint
SKU: 1600686031495

BCD Curve:C
Type:MCCB
Brand Name:Chint
Place of Origin:China
Model Number:NDM3Z
Protection:LSI
Breaking Capacity:20kA, 40kA
Rated Voltage:500V 750V 1000V 1200V 1500V DC
Certificate:UL1077, VDE, CB, CE, CCC, Semko

Poles

Rated Current

SKU: 1600686031495 Category: Others

Description

Nader NDM3Z 125A 200A 250A 400A 500A 630A 800A 2P 3P 4P 500V 750V 1000V 1200V 1500V DC MCCB Circuit Breaker

Nader NDM3Z series DC moulded case circuit breakers (hereinafter referred to as breakers) are applicable to work in DC system application environment with rated operating voltage of DC1000V, and rated operating current of up to 800A.

To satisfy the customers’ application of higher voltage of DC system, we have launched NDM3Z-250V high-voltage high-breaking product whose rated operating voltage is up to DC1500V and rated operating current is up to 250A. The circuit breaker provides overload and short circuit protection, and can protect the circuit and power equipment from damage. The product has been widely used in new energy, electric power, industrial control, real estate, electric power supply, telecommunications, rail transportation, industrial (public) construction and other industries.

Additional information

Weight	2 kg
Dimensions	25 × 25 × 25 cm
Rated Current	16A, 20A, 25A, 32A, 40A, 50A, 63A, 80A, 100A, 125A, 160A, 200A, 250A, 315A, 400A, 500A, 630A, 800A
Poles	2P, 3P, 4P

Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for Nader NDM3Z 2P/3P/4P DC Circuit Breaker 500V-1500V.

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Official Technical Datasheet (PDF) Complete electrical ratings, tripping characteristics, dimensions, and compliance specifications.

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2D/3D CAD & Dimensional Drawings STEP, DXF, and PDF CAD drawing files for panel builders and switchgear designers.

Technical FAQ & Selection Guide

💡 Frequently Asked Technical Questions & Selection Guide

Pure engineering specifications, tripping curve parameters, and electrical selection guidance for panel builders and system designers.

Voltage & Load Sizing

How to verify rated operational voltage, frequency, and load duty cycle?

Verify that the nominal line voltage (AC 230V single-phase or 400V/415V/690V three-phase at 50/60Hz, or DC voltage ratings) falls within the continuous maximum operating limits of the device. Check duty cycle ratings (continuous vs intermittent duty) to ensure thermal stability under full load.

Protection & Environment

What ingress protection (IP Rating) and environmental enclosures are recommended?

For clean indoor electrical rooms, standard IP20 modular DIN-rail housings are recommended. For outdoor, industrial washdown, or dusty environments, mount components inside weatherproof enclosures rated IP65/IP66 with UV-resistant polycarbonate or powder-coated steel enclosures equipped with compression cable glands.

Selectivity & Grading

How to ensure upstream and downstream coordination in power distribution boards?

Ensure proper discrimination by grading current thresholds and tripping time delays: upstream devices should have higher current ratings and intentional short-time delays (Class S), allowing downstream branch MCBs to clear localized faults without blacking out the entire facility.

Installation & Mounting

What mounting rails, busbars, and spatial clearances are required?

Components mount on standard symmetrical 35mm DIN rail (EN 60715 / TH35-7.5) or backplate screw fixings. Maintain recommended top/bottom ventilation gaps (typically 30–50mm) to ensure unrestricted air convection, and use standard pin/fork comb busbars to minimize contact resistance and wiring errors.

Conductor & Torque Sizing

What conductor sizes and terminal tightening torques should be applied?

Select copper or aluminum conductor cross-sections complying with IEC 60364-5-52 current-carrying capacity tables based on continuous load. Always use a calibrated torque screwdriver or torque wrench to tighten terminal screws to the manufacturer-specified torque to prevent hot-spot degradation and loose connections.