2920L700/12MR

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PTC Resettable Fuses, or Polymeric Positive Temperature Coefficient devices, are a relatively new type of over-current protection device. They are used in a wide range of applications, from industrial control panels to consumer appliances. The 2920L700/12MR is an example of such a device and is designed to protect electrical circuits from over-voltage and over-current conditions.The 2920L700/12MR is a single-pole, one-time overload protection fuse, which features a solid-state, bistable, non-erasable switch. This means that when the fuse is over-stressed, a state change occurs, resulting in the adjustment of the protection circuit’s characteristics. This state change is designed to be non-erasable, meaning that after the circuit has been reset, the protection level remains constant.The design of the 2920L700/12MR offers several advantages over traditional fuses. For example, its internal circuitry provides additional protection against thermal and electrical shock, as well as extends the life of the fuse. In addition, it offers protection against over-voltage, and under-current conditions. This eliminates the need for coordination between fuses in an application, and thus increases system reliability.The operational principle behind the 2920L700/12MR is based on its thermistor characteristics. The thermistor is composed of a special polymeric material, which is designed to expand in response to an increase in temperature. As this expansion occurs, a thermal reaction occurs at the tip of the thermistor, producing a voltage spike. This in turn triggers a switching mechanism, which closes the circuit and thus cuts off the power supply.Once the power is resumed, the 2920L700/12MR returns to its original state, and is ready to enter into a new cycle of operation. This is considered to be one of the main advantages of the device, as the cycle can be completed without the need for manual resetting. Furthermore, the resetting is non-interruptive, allowing for continuous and uninterrupted operation.The 2920L700/12MR is compatible with a number of different types of control systems. This includes both programmable logic controllers and analog systems. In addition, its flexibility allows it to be used in applications that require voltage or current monitoring. This makes it ideal for applications such as thermal monitoring, UV protection, and surge protection.Overall, the 2920L700/12MR is a robust, reliable, and cost-effective solution for over-current protection. Its solid-state switching technology offers reliable switching, even under the most extreme conditions. Its non-interruptive resetting makes it ideal for applications that require continuous and uninterrupted operation. In addition, its compatibility with a range of different control systems offers users a wide range of options for over-current protection.

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