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A Versatile Sensing Solution for the Most Challenging Environments

Emerson’s TopWorx™ GO™ Switch is an extremely versatile sensing solution designed for the most challenging environments and applications. It detects like a proximity switch and functions like a limit switch, providing higher reliability when conventional switches fail. GO Switch provides reliable, durable proximity sensing in the most demanding conditions, and its innovative, unique design provides simplified, maintenance-free high performance.

Keep your emissions under control with TopWorx GO Switch

TopWorx GO Switch Thief Hatch Monitoring System provides reliable proximity sensing technology you can rely on.

How Challenging is Your Environment?


Hazardous Environments

The TopWorx GO Switch is designed to function where high temperature, pressure, radioactivity and potential for combustion are constant challenges. In addition to high temperature +204 °C (+400 °F), cold temperature -50 °C (-58 °F), and sub-sea 7,010 m (23,000 ft) applications, these products are suitable for use in Flameproof/Explosion Proof, Non-Incendive, Intrinsically Safe hazardous areas with both global and regional certifications available.
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A Versatile Combination of Proximity Switch and Limit Switch

The TopWorx GO Switch uses magnets to detect a ferrous metal or magnetic target, and like other proximity switches has no exposed, moving parts. Like a limit switch, it provides highly precise readings and is suitable for a wide variety of industrial applications. By combining these features, the GO Switch requires far less maintenance than traditional limit switches and performs within ruggedized and harsh environments that often prohibit the use of other technologies such as inductive or capacitive sensors.

Choose your design


Square model TopWorx GO Switches are ideal replacements for traditional mechanical limit switches. They are typically used for extended sensing applications that require less precision and come in side- and end-sensing variations. Two internal magnets, with one being more dominant, effect the position of an armature that supports the sealed contacts. A ferrous or magnetic target entering the sensing area diverts the magnetic flux field and makes the other magnet more dominant, resulting in the armature closing the contacts and generating a signal.

Related Products

TopWorx™ GO™ Switch Model 21

Offering the same features as the GO™ Switch Model 11, The Model 21 GO™ Switch provides a smaller design. All GO™ Switch wiring options include A/C, D/C, N/O or N/C, consumes no power to operate and has no current leakage or voltage drop.

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TopWorx™ GO™ Switch Model 22

A lower profile version of model 12, model 22 is also available with ATEX/IECEx Zone 1, Ex ’de’ flameproof and increased safety hazardous area classification in a smaller package.

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TopWorx™ GO™ Switch Model 11

The GO™ Switch Model 11 features sealed gold flashed contacts, no-touch sensing and snap action response in a square switch design with a 3/8™ sensing range.

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TopWorx™ GO™ Switch Model 81

The GO™ Switch Model 81 offers end sensing and an optional Double Pole Double Throw (DPDT) contact arrangement With a 1/4™ sensing range, wiring options include; AC, DC, N/O or N/C choices.

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Frequently Asked Questions about GO Switch

GO Switch provides reliable, durable proximity sensing in the most demanding conditions. Using unique technology, GO Switch outperforms all other types of sensors in applications that require high reliability and durability.

The TopWorx GO Switch is the most versatile sensing solution. It detects like a proximity switch and functions like a limit switch, providing higher reliability when conventional switches fail. The all-in-one proximity sensor and limit switch.
TopWorx GO Switches operate on the principle of magnetic attraction, reacting to ferrous metal or magnetic targets as they come within the switch's sensing range.
  1. Extended Sensing - Sealed contacts, rugged housings, non-contact detection of ferrous metal & magnetic targets, and snap action response make these switches the ultimate problem solvers for troublesome mechanical limit switch applications.
  2. Precision Sensing - With all stainless-steel construction, flexible AC/DC, NO/NC, and SPDT/DPDT contact configurations, superior corrosion resistance, and global certifications for all hazardous areas, 70 Series GO Switches outperform inductive proximity switches in the toughest applications.
TopWorx GO Switches are suitable for use in Flameproof/Explosion Proof, Non-Incendive, Intrinsically Safe hazardous areas with both global and regional certifications available.
TopWorx GO Switches are available in temperature ranges between -50°C to +204°C (-58°F to 399.2°F).

Media & Case Studies

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Position Verification for Oil Well Shutdown
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Enabled Increased Performance for Grain Storage
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Limiting Emissions from Open Thief Hatch
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Real Time Monitoring of Lubricating Equipment
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Explore Other Solutions for Your Critical Applications

TopWorx solutions provide high reliability and installation flexibility while increasing profitability and reducing downtime in the most demanding applications.