0070.9521.A2

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The 0070.9521.A2 is a part of TVS (Transient Voltage Suppressors) and MOVs (Metal Oxide Varistors) application. It is designed to provide effective protection against transients and surge pulses which could cause damage to unprotected equipment.

In essence, it is a non-linear resistor which acts as a voltage-dependent switch, connecting equipment power lines to ground when under voltage. The device is designed to help reduce or protect against voltage spikes which can be caused by ground loop, incoming supply line, lightning, capacitive/inductive switching and other sudden changes in the electrical environment.

0070.9521.A2 consists of a metal oxide ceramic layer surrounded by electrodes, encased in an insulating housing. It has two basic characteristics: resistance and capacitance. The resistance is dependent on the applied voltage and capacitance is typically low at higher applied voltage and increases with decreasing voltage.

When subjected to a transient voltage, the 0070.9521.A2 reacts quickly and conducts current from the vulnerable circuit to ground. This reduces the voltage on the vulnerable circuit and protects it from overvoltage damage. It also has a ‘clamping’ effect on the voltage and capacitance reducing the surge pulses to more manageable levels.

It is important to remember that the 0070.9521.A2 is only designed to provide limited protection against transients and surge pulses, it is not a replacement for a properly designed surge protection setup. It is recommended that it is used as part of a comprehensive surge protection system which includes series capacitors, proper grounding and other forms of surge protection.

In conclusion, the 0070.9521.A2 is a valuable component for protecting equipment in potentially dangerous environments. Its ability to act quickly and reduce the voltage on vulnerable circuits helps to protect the equipment from permanent damage. It is important to remember that while it does provide some protection against transients and surges, it should not be used as a replacement for a comprehensive surge protection solution.

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