LW26 Series Universal Rotary Cam Switch

Product Overview

The LW26 series universal rotary cam switch is a versatile panel-mounted switching device for low-voltage control and distribution circuits. It performs circuit changeover, power source selection, control mode switching and measurement signal selection by rotating the cam mechanism to open and close contact blocks in a predefined sequence.

With a rated operational current of 20A, it is available in 2-pole, 3-pole and 4-pole configurations with a wide variety of contact schemes and position sequences. Users can select from standard knob handles for general operation or key-lockable handles to restrict access to authorized personnel only. It is widely installed in control cabinets, distribution panels, machine tool electrical boxes and power equipment for functions such as local/remote mode switching, motor forward/reverse control, voltage/current measurement selection and dual power source changeover. Manufactured in compliance with IEC 60947-5-1 standard, it delivers reliable switching performance and long mechanical life in industrial environments.

Key Product Features

✅ Wide Range of Contact Schemes & Positions Available in 2, 3 and 4 pole configurations with multiple position sequences: 2-position (ON-OFF), 3-position (1-0-2), custom multi-step and momentary positions. Flexible matching of different circuit switching and control logic requirements.

✅ Standard & Key-Lock Handle Options Standard black knob handle for general daily operation. Key-lockable version with keys restricts operation to authorized personnel only, preventing unauthorized operation and improving system safety in public and industrial facilities.

✅ Modular Contact Block Construction Modular stacked contact block design with reliable silver alloy contacts. Stable contact resistance, excellent arc resistance and long electrical life. Modular structure enables flexible configuration and easy maintenance.

✅ Flush Panel Mount Installation Standard mounting hole, flush panel mount design with front fixing nut. Neat appearance on control panel, firm installation and reliable performance under vibration conditions.

✅ Clear Position Marking Laser-etched position markings on the front panel with clear, wear-resistant legends. Operators can clearly identify current switch position and working mode at a glance, reducing misoperation risk.

✅ IEC 60947-5-1 Standard Compliance Designed and tested in accordance with IEC 60947-5-1 international standard for low-voltage control switchgear. Passed electrical life, mechanical life and dielectric withstand tests, suitable for global industrial projects.

Technical Specifications

Application Scenarios

• Local / remote control mode selection in industrial control cabinets
• Motor forward / reverse / stop control on machine tools and hoists
• Voltage / current measurement switching on distribution panels
• Dual power source changeover and load circuit switching
• Control mode selection in HVAC, pumping and automation systems
• Authorized operation control with key-lock version in public facilities

Our Advantages

1. Rich standard configurations in stock Wide selection of pole counts, position schemes and handle types in sufficient stock. Support mixed batch orders for panel builders and machinery OEMs, with fast bulk shipment available.
2. Reliable contact performance Silver alloy contacts with stable contact resistance and good arc resistance. Precise cam mechanism ensures accurate contact actuation sequence and consistent switching performance over long service life.
3. Strict factory quality inspection Each unit undergoes contact resistance test, insulation withstand test, mechanical operation test and position accuracy verification before delivery to ensure stable on-site performance.
4. Strong customization capability Support custom contact schemes, position sequences, panel legends and handle types according to specific control logic and project requirements.
5. Complete technical documentation support Provide dimension drawings, wiring diagrams, contact sequence charts and selection guides to support project design, tender bidding and on-site commissioning.

Custom Solution

We provide project-oriented custom solutions for LW26 series cam switches:

• OEM Marking Customization: Custom laser-engraved logo, model marking and position legends on front panel for branded resale.
• Contact Scheme Customization: Custom number of poles, contact sequence and momentary / maintained positions according to specific control logic.
• Handle Customization: Key-lock, extended handle and special color handle options for different application scenarios.
• Export-grade Custom Packing: Neutral carton, customer-branded packaging, seaworthy reinforced packing for long-distance sea transportation.
• Large-order Priority Production: Priority production schedule for large project and OEM orders to guarantee delivery lead time.

Share your required pole count, position sequence and handle type, our engineers will recommend the most suitable cam switch solution within 24 working hours.

FAQ

Q1: What is a rotary cam switch used for?

A: A rotary cam switch is used to switch multiple electrical circuits, select control modes, change over power sources or switch measurement signals by rotating a handle. It is widely used in industrial control panels and distribution cabinets.

Q2: What does the number 20 in LW26-20 mean?

A: The number 20 represents the rated operational current of 20 amperes under AC-15 utilization category, which is the standard current rating for this series of cam switches.

Q3: What is the difference between standard handle and key-lock handle?

A: The standard knob handle can be operated by anyone. The key-lock handle requires a key to rotate, which restricts operation to authorized personnel only, preventing unauthorized or accidental operation.

Q4: How many poles and positions are available?

A: Standard options include 2, 3 and 4 poles, with 2-position, 3-position and multi-position sequences. Custom contact schemes and position definitions can also be provided for specific requirements.

Q5: How is this switch installed?

A: It adopts flush panel mounting. Insert the switch through a standard mounting hole on the panel and fix it with the locking nut from the back side. Wiring is done on the rear terminal blocks.

Q6: Do you support custom position legends?

A: Yes, we support custom laser-etched position markings and text legends on the front panel according to customer requirements.

Q7: What standard does this switch comply with?

A: It complies with IEC 60947-5-1 international standard for low-voltage control switchgear and controlgear, and meets general industrial electrical safety requirements.

Package Content

1 × LW26 Series Rotary Cam Switch 1 × Mounting Nut & Accessory Kit