EA700-80000 Danaher
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The Danaher EA700-80000 is part of the Snaplock Limit Switches series and features a 2NO/2NC contact arrangement with Form Z butt contacts. It has a zinc housing, long mounting style, and offers an overall torque of 27 in-lb with a double pole configuration. The switch supports CW operation and NEMA Type 1, 4, and 13 enclosures.
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Product Description:
Danaher manufactures the EA700-80000 rotary unit in its Snaplock Limit Switches series. This product is a shaft-mounted limit switch that converts mechanical rotation into precise on-and-off signals for cranes, conveyors, or positioners in industrial automation. As the driven shaft turns, internal cams open or close electrical contacts at calibrated angles, allowing machines to stop, reverse, or follow a sequence without software interpretation. This hardware-level position feedback remains dependable even when control power or communication networks are disrupted.
The switching block carries a 2NO/2NC contact arrangement in a Form Z layout, providing simultaneous make-and-break paths for redundant safety chains. Each double-pole butt contact maintains proper separation across the 75–100 percent power-factor range typical of inductive motors. Actuation requires 27 in-lb of shaft torque, and the cam drum rotates clockwise to match the required operation. The trip lobes can be positioned from 7°30' through 360° to match the process geometry, while the mechanism permits a full sweep of 90° before the mechanical stop engages. The enclosure meets Type 1, 4, and 13 NEMA requirements, allowing the long mounting bracket to be used inside panels, on washdown equipment, or in lubricant-rich areas without an additional housing.
The cam stack is factory indexed for a trip angle of 18°, followed by a 14° reset that prevents nuisance toggling while supporting quick recovery after motion reverses. Aligning travel near the recommended 30° midpoint helps maximize contact life and maintain repeatable switching. A die-cast zinc enclosure supports the applied torque while shielding the butt contacts from vibration. The clockwise action suits mechanisms that approach their limit from the specified rotational direction. Its double-pole architecture provides separate contact paths for control and safety circuits, while the butt-contact design supports consistent switching across the stated power-factor range.
