VDRS20W320BKE

Series:	VDRS
Part Status:	Active
Lead Free Status / RoHS Status:	--
Maximum AC Volts:	320V
Maximum DC Volts:	420V
Varistor Voltage (Min):	459V
Varistor Voltage (Typ):	510V
Varistor Voltage (Max):	561V
Current - Surge:	6.5kA
Energy:	296J
Number of Circuits:	1
Capacitance @ Frequency:	750pF @ 1kHz
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Through Hole
Package / Case:	Disc 22.50mm

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A Varistor or a MOV (Metal-Oxide Varistor) is a voltage-dependent resistor which is used in the protection of electrical systems from transient voltage spikes or over-voltages. The VDRS20W320BKE is a varistor designed specifically for voltage suppression applications. It has an operating voltage ranging from 200V AC to 320V AC and is capable of handling up to 20A.The VDRS20W320BKE is mainly used for over-voltage protection in a variety of applications such as home appliances, automotive and industrial systems. It can also be used in switchgear, military, and electronic device and circuit applications to protect against transient voltage surges.Unlike other protection devices which limit the current flow by intercepting and diverting it away, a varistor acts as a barrier for any voltages above the set threshold. This device consists of a ceramic disk filled with a metal oxide paste. When a transient voltage is applied to the varistor, the voltage causes a surge of electric current in the metal oxide material which results in a sudden drop in resistance. This helps the varistor neutralize the voltage spike by diverting the current flow elsewhere.The varistor’s working principle is quite simple; it works by providing a path for any excess energy to dissipate, through Joule heating, while maintaining a safe voltage level within the system. It acts like a voltage-controlled switch, where the varistor is turned “on” in the presence of a transient voltage surge and turned “off” when the surge is over.Some additional features of the VDRS20W320BKE include over-voltage protection, which prevents the system from failing due to excessive voltages that may occur. Additionally, this device also has surge protection, which further prevents the system from any damage due to power surges and overvoltages.The VDRS20W320BKE is an efficient way to protect your electrical systems from transient voltage spikes and surges. It offers a reliable protection against transient overvoltages and ensures a safe, reliable system operation.

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