SL5C-101 by Danaher

The SL5C-101 is a cam-operated switch assembly manufactured by Danaher for the Timers and Controllers series. Intended for sequence control in industrial automation, the unit converts rotary motion into timed electrical outputs so that downstream devices receive signals at precise shaft positions. The product synchronizes mechanical movement with electrical events in ovens, conveyors, and other equipment that uses mechanical timing.

The switch uses a cam actuation mechanism that rotates through two independent stations, with each station carrying three poles arranged in contact form Z. Silver alloy is used for all working contacts to limit arc erosion under load. The rated continuous current is 20 A at 125 VAC, permitting direct switching of compatible motors or heaters without an interposing relay. Wiring enters from the bottom through a 1-1/2-11.5 NPT threaded hub, allowing rigid metal conduit to couple directly to the aluminum housing and maintain enclosure integrity. Each lever's contact timing can be staged because the mechanism supports a three-pole configuration at each station. Separate poles can therefore be allocated to independent circuits that must switch at coordinated shaft positions.

The shaft must be turned counterclockwise, and an operating torque of 33 lbf·in is required to overcome the internal springs and cams. Total travel is limited to 90°, while a trip occurs after 18° within that sweep, enabling early actuation relative to the end of travel. Fine indexing is possible because each cam lever can be repositioned in discrete 7.5° increments. The aluminum enclosure tolerates ambient temperatures up to 180 °C, with reliable operation beginning at 20 °C. This operating range allows the switch to be installed near high-temperature processes while remaining within its permitted thermal limits. The specified torque, travel, trip point, and indexing interval should be considered when connecting the shaft to the machine mechanism.