Emergency Stop Push Buttons

An emergency stop button, also known as an E-Stop, is a fail-safe control switch designed to ensure safety for both the machinery and its operator. The purpose of the emergency push button is to stop the machinery quickly where there is a risk of injury or when the workflow needs to be halted.

To minimise risks, all machinery must be equipped with an emergency stop button. These buttons are typically red, often set against a yellow background, making them easy to identify in an emergency.

Purpose of Emergency Stop Push Buttons

The purpose of the emergency stop button is to ensure safety and minimise risks in various operational settings. Here are the key purposes of emergency stop buttons:

• Protect Personnel from Harm: The primary purpose of an emergency stop button is to immediately halt machinery or processes to prevent injuries or accidents, protecting workers from potential hazards.
• Prevent Equipment Damage: Emergency stop buttons are used to stop operations in case of malfunction or unsafe conditions, preventing severe damage to machines or systems.
• Compliance with Safety Standards: To meet industry regulations and safety standards, emergency stop buttons are a mandatory feature in workplaces, ensuring that companies comply with health and safety laws.
• Minimise Property Loss: By halting operations in dangerous situations, emergency stop buttons can reduce the risk of property damage, protecting valuable assets and infrastructure.
• Ensure Quick Response to Hazardous Situations: Emergency stop buttons provide a rapid, accessible means to respond to critical situations, allowing operators to act swiftly and prevent further escalation of dangerous conditions.

Types of Emergency Stop Switches

The three most common emergency stop switches are:

• Push-Pull Buttons: The push-pull emergency button is pushed in to stop and released by pulling the button back.
• Twist Release Buttons: The emergency stop switch is pushed in to stop and released by twisting the button.
• Key Release Buttons: This emergency stop switch is pushed in to stop and only released with a key.
• Food and Palm Buttons: Foot and palm buttons have a large actuator surface and are also tamper-proof. They can be actuated by using the foot or hand and their simple design makes for a quick response. These types of emergency stop switches are ideal for harsh environment applications.
• Position Switches: Position switches provide a link to the emergency stop actuating element. This type of emergency stop button is highly reliable plus quick and easy to fit. They can also be used in a wide range of applications.

Emergency Stop Push Buttons Applications

Emergency stop push button switches are used in various industries, including industrial, commercial and public facilities, as follows:

• Manufacturing Plants: Used to stop machinery instantly, preventing accidents or equipment damage during operations.
• Construction Sites: Ensures worker safety by halting heavy machinery in emergencies or hazardous situations.
• Automation Systems: Provides a rapid shutdown of automated processes to avoid system failures or injuries.
• Public Transportation: Installed in trains or buses to stop operations in case of emergencies, ensuring passenger safety.
• Food Processing: Protects workers and ensures hygiene by stopping machines in case of contamination or safety concerns.

Safety Standards for Emergency Stop Push Buttons in Hong Kong

In Hong Kong, emergency stop push button switches must adhere to strict safety standards to ensure reliable operation in critical situations. These standards, often aligned with international guidelines like IEC 60947-5-5 and ISO 13850, dictate specific requirements for button design, functionality, and installation. This includes specifications for colour (red button with a yellow background), shape (easy to activate), and contact type (normally closed). Adhering to these standards is crucial for minimising risks and ensuring worker safety in industrial and commercial settings.

How to Choose the Right Emergency Stop Switches?

When choosing emergency stop switches, consider factors such as visibility (for easy identification), accessibility (to be within reach in emergencies), and durability (to withstand harsh environments). Ensure the switch meets safety standards and is compatible with the machinery. Additionally, consider response time, ease of activation, and weather resistance if the switch will be used in outdoor or extreme conditions.

How to Order Emergency Stop Switches from RS Hong Kong?

RS Hong Kong, as a trusted supplier, offers emergency stop switches from renowned brands such as TE Connectivity, Schneider Electric, and Siemens. To place an order, you can shop online for fast delivery or pick up from a nearby branch. Alternatively, you can place an order by calling 852 2421 9898. RS Hong Kong also offers the option to set up blanket orders with customisable spend limits, helping you manage and track purchases effectively.

How Delivery Works at RS Hong Kong?

At RS Hong Kong, we offer flexible delivery options for emergency stop switches. Orders placed before noon on weekdays (Monday to Friday) for in-stock items can be delivered on the same working day. Orders placed in the afternoon are eligible for next working day delivery. For more details, please refer to our delivery page.