A bimetal switch offers the best energy savings by eliminating power drainage when appliances and other machines are in an off state. There is no potential for power drainage when a device is not in use. A bimetal switch is either absolutely on or absolutely off. This is an important feature for satellites, commercial and military aircraft and other applications were funds are tight.
A bimetal switch operates over a temperature range from -60 to 500 degrees Fahrenheit. These devices come in a variety of shapes and sizes, and are easy to mount. In many applications the switch is designed to manage the load directly which results in reliability.
The high level of accuracy is one reason that bimetal switch thermostats are so often used for different applications. Their rugged design and flexibility are also key features of the design. A hi-limit bimetallic switch is an important part of thermal management. When they are mounted directly on heat sinks, the switch is like an alarm. It can recognize ambient heat and any heat coming from the component of interest.
Another application where a bimetal switch is essential is related to a variable speed fan. On bimetal switch activates the fan and a second switch increases the fan speed if additional cooling is needed. It is important to have the second bimetal switch available to regulate the fan speed - especially because this helps manufacturers follow OSHA regulations regarding noise levels.
Temperature management, power drainage, and electrical rating are all important components of a bimetal switch design. A switch should also be flexible when it comes to mounting, and materials used to make wire leads and brackets can really help keep costs affordable. You can even find a bimetal switch that comes preset.
The creep action of a bimetal thermal switch protects appliances and other electrical equipment from dangers caused by constantly changing temperatures. Creep action is designed to stabilize the internal temperature. It is just one of the many thermal protective devices installed in appliances today.
A bimetal switch is typically dust proof on the inside, but if you need an accurate switch for thermal measurements that can handle a corrosive and rugged environment, a specially sealed bimetal switch is available through the manufacturer.
When an appliance overheats, there is the potential for a fire to ignite. A bimetal switch is designed to reduce this danger significantly. As soon as temperatures reach a dangerous range, the heat source or the appliance will shut off. This is an important feature for appliances like cars, ovens, furnaces, clothes dryers, hair dryers and more.
Most appliances that utilize a thermal switch have resetting properties. When the appliance resets itself, its snap action response returns to normal as soon as the high temperatures return to normal. This safety feature is reliable, dependable and affordable. A thermostat with a bimetal switch can either be reset, or you can buy a preset switch through the manufacturer.
I have worked with DeVale on several custom applications and their engineering support has been exceptional. They designed a custom control at about the same cost of an off the shelf switch that we had been using. Our savings has been significant.
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