CHINT LW42 Series Rotary Cam Changeover Switch CHINT LW42 Series Rotary Cam Changeover Switch
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CHINT LW42 Series Rotary Cam Changeover Switch CHINT LW42 Series Rotary Cam Changeover Switch
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CHINT LW42 Series Rotary Cam Changeover Switch
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CHINT LW42 Series Rotary Cam Changeover Switch

LW42 cam switch for manual control and circuit conversion. 2-12 switching positions, silver alloy contacts, IP40/IP65 protection. For machine tools and control panels.

SKU: CHINT-LW42-CAM-SWITCH Category: Others
  • Description
  • Technical Datasheet & Downloads
  • Technical FAQ & Selection Guide
Description

Product Overview

The LW42 Cam Switch is used for manual control, circuit conversion, or isolation in power distribution and industrial automation systems. It provides reliable rotary switching for machine tools, control panels, and motor control applications.

Main Features

  • Multiple Switch Positions: 2 to 12 switching positions for multi-step operations
  • Silver Alloy Contacts: Excellent conductivity and long electrical endurance
  • Protection Options: IP40 standard, IP65 available for demanding environments
  • Versatile Applications: Machine tools, control panels, distribution boxes
  • High Quality: CHINT manufacturing with reliable performance
  • Easy Operation: Smooth rotary switching mechanism

Technical Specifications

Parameter Specification
Switch Positions 2 to 12 positions
Contact Material Silver alloy
Protection Level IP40 (standard), IP65 (optional)
Standard IEC 60947-5-1

Technical and Application Notes

The LW42 cam switch is designed for reliable operation in industrial environments. Its robust construction and silver alloy contacts ensure long service life even under frequent operation. The switch can be configured for various switching sequences to meet specific application requirements.

Typical Applications

  • Machine tool control
  • Control panels
  • Distribution boxes
  • Motor control systems
  • Circuit conversion
  • Power distribution

Ordering Support

When ordering LW42 cam switches, please specify:

  • Number of switching positions required
  • Contact configuration
  • Protection level (IP40 or IP65)
  • Mounting requirements

Product Catalog

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

LW42 Catalog Page 1
LW42 Catalog Page 2
LW42 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 LW42 Series Rotary Cam Changeover Switch.

📥
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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