EA170-12100 Danaher
Wake Industrial LLC is not an authorized distributor of this product.
The Danaher EA170-12100 is a rocker type Snaplock Limit Switch with 2 normally open and 2 normally closed contacts, using a silver alloy contact material. It has a current rating of 20 Amps at 125 Vac and features a standard mounting style with a 1-11.5 NPT conduit thread. Trip travel is 10 degrees, with total travel set at 37 degrees and torque to trip rated at 23 inch-pounds.
Internal Product Review
The EA170-12100 is a Danaher Snaplock limit switch with rocker actuation and a standard mounting style. A 2 NO, 2 NC contact arrangement with silver alloy contacts supports dependable switching performance in control circuits. Recommended travel of 13° and a 20 A rating at 125 VAC make the unit a strong choice for durable machine interfacing.
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Product Description:
The EA170-12100 is a Snaplock limit switch manufactured by Danaher for industrial automation tasks that require precise end-position feedback. Installed along cams, slides, or actuator arms, the device converts a specified mechanical angle into a clean changeover of electrical contacts, allowing controllers to halt motion, trigger sequencing, or initiate safety shutdowns. Its compact housing follows the series outline, providing a sealed mechanical linkage and a quick-acting internal spring so positional signals remain consistent despite vibration or repeated cycling.
Electrically, the switch carries up to 20 A at 125 VAC through a contact block with 2 NO and 2 NC contacts arranged in Contact Form Z. Each pole uses a silver-alloy butt contact to minimize resistance and arc erosion during load switching. The actuator is a rocker that pivots counterclockwise, as indicated by the CCW direction of operation, until it meets the internal snap spring. Mechanical motion has a total stroke of 37°, with the switch responding after 10° of trip travel and resetting once the lever returns by 8°. This geometry supports repeatable switching while keeping overtravel within the intended operating range.
For installation and adjustment, the lever advances in 7°30′ increments, a step size that simplifies alignment with cams. The switch should be driven through a recommended arc of 13° to guarantee snap action without overstressing the mechanism. A tripping effort of 23 in-lb indicates the torque that must be available at the driving linkage. Electrical entry is provided by a 1-11.5 NPT conduit thread, allowing compatible conduit fittings to connect directly to the housing. The housing secures to panels with a pair of 5/16-18NC mounting holes that follows the series mounting pattern. This arrangement permits installation on safety gates, limit rails, or indexing tables without secondary brackets or adapters.
