What is an escalator safety switch?

Escalator safety switch is a device designed to ensure the safe operation of escalators. In the event of abnormal conditions, such as a broken drive chain or motor failure, the safety switch detects the issue and immediately cuts off power, protecting passengers while using the escalator.

How many types of safety switches are installed on escalators?

Theare are various of safety switches on escalators designed to ensure passenger safety and proper operation. Here are some key escalator safety switches and their functions:

Escalator Emergency Stop Switch: Located at the top and bottom entrances, it allows for immediate power cut-off in emergencies, stopping the escalator to address situations like passenger falling.

Escalator Cover Plate Protection Switch: Installed beneath the top cover plates, it detects if the cover is open. If so, it disconnects the safety circuit, stopping the escalator to prevent passengers from falling inside.

Skirt Panel Protection Switch: Found within the escalator skirt panel, it triggers when the skirt panel is displaced, disconnecting the safety circuit to halt the escalator.

Step Missing Deflection Switch: The escalator step missing deflection switch is located in the step guide rail, it activates when a step dips, triggering a switch that cuts power and stops the escalator.

Handrail Inlet/Exit Switch: Positioned at the handrail’s entry and exit, it prevents hand entrapment. If a hand gets caught, the switch is activated to stop the escalator.

Step Chain Breaking Switch: Installed in the button machine room, it responds to step chain break, activating a switch to stop the escalator.

Escalator Main Drive Chain Breaking Switch: Located in the upper machine room, it stops the escalator if the drive chain breaks, as the chain’s drop triggers the switch.

Power Phase Monitoring Protection Device: Integrated into the ECB board, it monitors power phase and voltage, ensuring normal conditions before the escalator starts.

Escalator Electrical Safety Switches: Includes various devices such as main cover protection and over speed limiters, which monitor and protect the escalator’s electrical systems.

The escalator safety switch is crucial for ensuring the personal safety. Regular inspection and maintenance of these safety switches are essential to guarantee their reliability and effectiveness.