Pull switches are electrical switches that are activated by pulling or tugging on the switch’s knob or chain. They are commonly used in situations where it is not practical to install a regular switch or when the switch needs to be remote to the device, such as in fans, lights, or ceiling fixtures.
Pull switches are simple but effective mechanisms which offer a practical solution for controlling electrical appliances. They come in various designs, materials, and sizes, and can function as both on/off switches or dimmers.
In this article, we will take a closer look at pull switches, their various types, and how they work, their advantages, and where to use them.
Different Types of pull switches:
There are two main types of pull switches: traditional pull switches and cord pull switches.
Traditional pull switches:
Traditional pull switches come in the form of a knob mounted on a mechanical lever that is connected to a set of contacts inside the switch housing. Pulling on the knob causes the lever to move and either make or break the contact within the switch housing.
There are two types of traditional pull switches: latching and momentary switches.
Latching switches have a mechanism that keeps them in a specific state – either on or off – until manually push or pull it to the other state. These switches are commonly used in lighting fixtures, ceiling fans, and other applications.
Momentary switches, on the other hand, only stay closed while the user is pulling on the knob. When they let go of the knob, the switch returns to its original position, breaking the circuit.
Cord pull switches:
Cord pull switches have a length of cord attached to the switch housing instead of a knob. They were initially designed for use in bathroom and toilet pull-cord light switches. However, nowadays, they are used in various applications requiring remote control of appliances, such as lamps, ceiling fans, and industrial machinery.
Cord pull switches have two cords: a short and a long cord. The short cord is usually connected to the switch housing and should be long enough to hang next to the device being controlled. In contrast, the longer cord hangs down at a reachable distance from the user. To activate the switch, the user must pull the longer cord, which pulls the shorter cord and activates the switch.
How do Pull Switches Work?
Pull switches work on a simple mechanism: when the knob or cord is pulled, the internal lever or link moves, breaking or making the circuit. In the case of traditional pull switches, the position of the switch (either on or off) depends on the position of the lever and contact within the switch housing.
Most pull switches come with one or two contacts, but some models can have multiple contact points, enabling them to be used as dimmers or three-way switches.
Advantages of Pull Switches:
Pull switches offer several benefits, including:
Easy to install: Pull switches are easy to use and can be hooked up quickly.
Space-saving: Sometimes, it is not practical to install a regular light switch in tight spaces. Pull switches can be installed in small places and provide a space-saving alternative.
Affordable: Pull switches are an affordable solution for controlling electrical appliances.
Convenient: Pull switches are very convenient to use, mainly if the appliance is located far from its power source.
Where to Use Pull Switches:
Pull switches can be used for controlling various types of electrical appliances, such as:
Fans: ceiling fans and box fans are common applications for pull switches. In these cases, a pull switch is a much more practical solution than having to stand on a chair to reach the fan’s off and on button.
Lights: light fixtures in garages, closets, workshops, and industrial use oftentimes use pull switches for convenience.
Machinery: in industrial settings, pull switches are sometimes used to operate machinery on the floor. The switch is located on a panel at a reachable distance from the workers, making it easy to turn on and off and reducing the risk of accidents.
Conclusion:
Pull switches are an excellent solution for controlling electrical appliances in a convenient and practical way. They are easy to use, compact, and affordable. With various designs and types on offer, it is easy to find a pull switch that suits your needs. Whether you need to control a ceiling fan, light fixture, or machinery, pull switches provide a practical solution for your convenience and safety.