Siemens Industry, Inc. 52SC6AE Key Control Selector Switch

Siemens 52SC6AE is a 30 mm panel-mount, two-position key-operated selector switch designed for secure manual control in industrial equipment. This non-illuminated unit uses a keyed operator with standard 501CH key, and the key can be removed in all positions, enabling controlled access to the selector state. The switch features a metal front ring with chrome bezel and employs a maintained (latching) A‑cam actuator that stays in the selected position until deliberately changed. In the 52SC6AE configuration, the device provides two distinct positions (often used as on/off or run/stop in control circuits) with a single normally open contact (1NO) contact arrangement. It is UL listed (UL file E22655) and belongs to Siemens’ 52SC family of non-illuminated, keyed selectors. Typical applications include control panels where a secure two-state selector is required to restrict operator access and ensure deliberate state changes in motor control, process sequencing, or equipment mode selection. Because the key is removable in any position, maintenance and commissioning workflows can be performed without removing the switch from its panel, reducing the risk of unintended state changes during service.