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An emergency stop button​, or emergency stop switch is a button or switch used to stop an elevator, escalator or moving walkway in case of a suitable emergency.

Introduction

Elevator

These buttons/switches are used to stop the car in case of emergency or just for loading purpose, especially in service or freight elevators. Some stop switches are either flip type (like some older Mitsubishi, Hitachi and GoldStar elevators) or push-and-pull type (like most old Otis elevators). The elevator cab will not start until the button/switch/keyswitch is reset. They are normally found in older elevators installed before 1980s, and rarely found on most modern elevators nowadays.

However, the car top, machine room, controller, shaft pit stop buttons, and the button near the ladder are still exist, to protect the elevator mechanics' safety.

Escalator or moving walkway

The escalator or moving walkway version of the buttons are placed on the both end or between (if this is long) of the escalator or moving walkway. These are the compulsory part of the escalator or moving walkway.

​Function

When pressed, the elevator will stop immediately and abruptly, while escalator, or moving walkway will stop slowly to prevent the passengers got injured[1]. This is true even if there is otherwise nothing wrong with the elevator. On some elevators, tripping the interlocks will have the same effect. Some stop buttons have been since disconnected.

Gallery

Notes and references

Schindler lifts (Dewhurst fixtures 2) "This elevator only serves two floors."
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Elevator 

Drive systems: Traction • Winding Drum • Hydraulic


Types of elevators: Double DeckDumbwaiterFireman'sFreightIncline • PassengerResidentialWheelchair lift


Concept: CapacityDestination dispatchElevator algorithm • Elevator control systemElevator machine room • Elevator maintenanceElevator modernizationMachine room less elevatorMajor alterationsRated speed


Elevator systems, controllers and equipments: Elevator fixtures • Elevator keys • Elevator special modesElevator doorsDoor camDoor interlocks (Interlock wiring communication system) • Door restrictorElevator Inspection CertificateEmergency stop buttonFloor designatorsGate switch • Old Deadman controls • Overspeed governorMotor-generator set & Silicon-controlled rectifier (for DC-powered elevators) • Insulated-gate bipolar transistor (for AC-VVVF-powered elevators) • SelectorTape headRegenerative converter (for AC-VVVF-powered elevators)


See also: List of elevator fixtures guide • List of elevator and escalator companies • Elevator door sill guide (Non-proprietary elevator component door sill guide) • Floor numbering (Unlucky floor numbers) • Elevator incidents and accidents

Escalator and Moving Walkway 

Concept: Escalator control systemEscalator machinery • Spiral escalator • Escalator maintenanceEscalator modernizationMajor alterations


Escalator equipments: Escalator truss and balustradeEscalator steps and step chainsEscalator handrails • Escalator skirt brushesEmergency stop buttonEnergy-saving mode


See also: List of elevator and escalator companiesEscalator landing plate guideFloor numbering (Unlucky floor numbers) • Escalator incidents and accidents