Limit Switches for Industrial Automation: Reliable Motion Control Solutions

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Yueqing Huilong Industrial Control Electrical Appliances Co., Ltd.
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Limit Switch: General-Purpose Device for Motion Position and Stroke Control

Limit Switch: General-Purpose Device for Motion Position and Stroke Control

The limit switch is a general term for switches used to restrict object motion positions or strokes, including travel limit switches, crane limit switches, micro limit switches, etc. It detects mechanical motion through contact or non-contact methods, triggering circuit changes at preset positions to control equipment operation or stop motion. Widely used in industrial automation, transportation, and construction machinery, this versatile switch is a fundamental component for ensuring safe and regulated motion in mechanical systems.
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Advantages

Universal Motion Control Solution

Covers diverse applications (stroke, position, limit) with a single product category, simplifying procurement and inventory management.

High Reliability in Critical Applications

Widely used in elevators, cranes, and aerospace equipment, with fail-safe designs meeting ISO 13849 performance level d.

Cost-Effective Safety Solution

Lower maintenance costs than non-mechanical sensors, with durable designs reducing replacement frequency in industrial settings.

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The ZCMD21 Telemecanique has an impressive reliability range and is used as a limit switch in industrial automation. It has a compact design which allows for many different types of actuators such as a roller lever or prunger. The ZCMD21’s contact rating is 10A while supporting 250VAC, which allows for the direct control of small motors or solenoids. The ZCMD21 is most commonly used in machine tools, packaging lines, and other material handling systems. In conjunction with the device’s snap-action contacts, it provides quick make/break operations which lessens arcing and wear.

Frequently Asked Questions

What makes limit switches a universal safety solution?

Limit switches cover diverse applications (stroke, position, limit) with a single product category, simplifying procurement and inventory management. Their versatility across industries—from elevators to aerospace—makes them a fundamental safety component.
Limit switches are widely used in elevators, cranes, and aerospace equipment, with fail-safe designs meeting ISO 13849 performance level d. Their high reliability in critical scenarios ensures compliance with strict safety standards and minimizes risk of catastrophic failures.
Limit switches have lower maintenance costs than non-mechanical sensors, with durable designs that reduce replacement frequency. Their robust construction in industrial settings ensures long service life, lowering total cost of ownership.
Limit switches are CE, UL, and CSA certified, ensuring compliance with safety regulations in Europe, North America, and other regions. This global certification simplifies market entry for manufacturers and end-users worldwide.
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Customer Reviews

Kevin Wilson
Essential Limit Switch for Safe Motion Control

The limit switch is a fundamental component for controlling object motion and ensuring safety. It effectively limits travel and prevents overrun in our machinery. Easy to install and adjust, it offers reliable performance at a reasonable price. A must-have for any system requiring motion limitation.

Rob Wilson
Universal Solution for Diverse Applications

As a system integrator, we use these limit switches across industries—from elevator safety to conveyor position control. The variety of types (mechanical, optical) lets us choose the best fit for each client's needs, and the global certifications (CE/UL) simplify compliance in different markets. Clients appreciate their 'fit-and-forget' reliability—we've never had a callback for limit switch issues in 50+ projects.

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Global Certification Compliance

Global Certification Compliance

CE, UL, and CSA certified, ensuring market access in Europe, North America, and other regions with strict safety regulations.
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Yueqing Huilong provides advanced industrial control appliances and relays for global markets. Our ISO-9001 certified products ensure quality and reliability. Contact us today!

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