CHINT NF2 Series Load Switch Disconnector CHINT NF2 Series Load Switch Disconnector
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CHINT NF2 Series Load Switch Disconnector CHINT NF2 Series Load Switch Disconnector
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CHINT NF2 Series Load Switch Disconnector
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CHINT NF2 Series Load Switch Disconnector

NF2 load switch for safe isolation and manual switching. 16A-1250A, up to 690V AC. Padlockable in OFF position. For distribution boards, motor circuits.

SKU: CHINT-NF2-LOAD-SWITCH Category: Others
  • Description
  • Technical Datasheet & Downloads
  • Technical FAQ & Selection Guide
Description

Product Overview

The NF2 Load Switch provides safe isolation and manual switching for low-voltage circuits, enabling disconnection under normal or overload conditions. It is ideal for distribution boards, control cabinets, and motor circuits in industrial applications.

Main Features

  • Wide Current Range: 16A to 1250A ratings available
  • High Voltage Rating: Up to 690V AC operating voltage
  • Padlockable: Can be padlocked in OFF position for safety
  • Flexible Handle Options: Direct handle or external door-coupled handle
  • Reliable Isolation: Safe disconnection for maintenance
  • Industrial Grade: Suitable for demanding environments

Technical Specifications

Parameter Specification
Rated Current 16A to 1250A
Rated Voltage Up to 690V AC
Handle Options Direct or door-coupled
Safety Feature Padlockable in OFF position

Technical and Application Notes

The NF2 load switch is designed for safe isolation of electrical circuits. Its padlockable feature ensures operator safety during maintenance or inspection. The switch can handle high currents up to 1250A, making it suitable for heavy industrial applications.

Typical Applications

  • Distribution boards
  • Control cabinets
  • Motor circuits
  • Manufacturing systems
  • Energy distribution
  • Automation systems

Ordering Support

When ordering NF2 load switches, please specify:

  • Rated current (16A to 1250A)
  • Rated voltage requirements
  • Handle type (direct or door-coupled)
  • Any special mounting requirements

Product Catalog

For detailed specifications and technical data, please refer to the product catalog below.

NF2 Catalog Page 1
NF2 Catalog Page 2
NF2 Catalog Page 3
Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for CHINT NF2 Series Load Switch Disconnector.

📥
Official Technical Datasheet (PDF) Complete electrical ratings, tripping characteristics, dimensions, and compliance specifications.
Request Official Datasheet (PDF)
📐
2D/3D CAD & Dimensional Drawings STEP, DXF, and PDF CAD drawing files for panel builders and switchgear designers.
Request CAD Model
Certified Standards: IEC 60898-1, IEC 60947-2, CE, RoHS, ISO 9001:2015
Manufacturer: Shanghai Newtrend Electric Co., Ltd. (Global Export Compliance)
Engineering Support: 24-hour response for custom voltage ratings, auxiliary contacts, and technical consulting.
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?

A

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?

A

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?

A

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?

A

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?

A

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.

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