SL1021A090RS

Series:	SL1021A
Packaging:	Tray
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Voltage - DC Spark Over (Nom):	145V
Impulse Discharge Current (8/20µs):	10000A (10kA)
Tolerance:	--
Number of Poles:	3
Fail Short:	No
Mounting Type:	Through Hole
Package / Case:	Axial Cylinder, 3 Lead (Radial Bend)

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Gas Discharge Tube Arresters (GDT), or Gas Tube Surge Arresters, are devices used in electrical power systems for the purpose of providing over-voltage protection. They are most commonly found in medium-voltage and high-voltage applications and are used to protect electronic equipment from electric power surges that could be caused by switching events or lightning strikes.The SL1021A090RS is a Gas Discharge Tube Arrester designed to protect high-power applications from over-voltage surges. It has a low voltage breakover specified for up to 300VAC, making it suitable for medium and high-voltage applications. The SL1021A090RS has a surge current rating of 30A and a symmetrical offer-apex voltage of 1000V.The working principle of GDTs is based on the phenomenon of electric field breakdown of gases. In this process, a voltage is applied to the electrodes of a GDT, and an electrical field is formed between them. If this field exceeds a certain level, the gas within the tube will break down, resulting in an arc discharge within the tube. This discharge is what provides over-voltage protection by limiting the amount of voltage that can pass through the device.The SL1021A090RS is constructed with two electrodes separated by a thin-walled glass tube that contains a noble gas such as nitrogen, which is the gas that allows for arc breakdown. The electrodes are encased in hard-polymer materials such as silicone, and the gap between them is filled with the noble gas. When a voltage is applied, an electric field is formed between the two electrodes, which causes the noble gas to break down in the form of an arc, thus allowing the current to flow through the device without causing any harm to the electronic equipment.When the surge voltage exceeds the threshold of the device, the gap between the two electrodes is filled with a plasma form of the noble gas, which allows for the flow of current. When the surge voltage drops below the threshold, the device is recovered and the noble gas returns to its normal state, thus providing over-voltage protection.The SL1021A090RS is designed to provide over-voltage protection in high-power applications, such as power supplies, switchgear, and control equipment, and can be used in both medium- and high-voltage applications. It is designed for use in indoor, outdoor, and hazardous location settings, and is suitable for applications operating up to 300VAC.The SL1021A090RS is tested to UL 467, CSA C22.2 No. 20-95, and IEC 852 standards and is designed to meet the requirements of BS 7655-3. It is also backed by a three-year limited warranty, so you can be sure that your investment in this Gas Discharge Tube Arrester is safe.The SL1021A090RS is an ideal choice for over-voltage protection when used in high-power applications. With its low voltage breakover, high surge current rating, and symmetrical offer-apex voltage, it is capable of providing reliable over-voltage protection and is backed by industry-leading certifications to ensure its quality and performance.

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