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Varistors With Thermal Disconnection / VTDM

VTDM

 The VTDM(S) Varistors with Thermal Decoupler - use special shape metal oxide varistors equipped with a thermal decoupling device. They are widely used in TVSS products, AC/DC power supplies, AC panel protection modules, AC line power supplies, surge protected strip connectors, AC power meters, UPS (Uninterruptible Power Supplies ), inverters, white goods, GFCIs (Ground Fault Current Interrupters ). The advantages of the VTDM(S) Varistors with Thermal Decoupler are: terminals construction for PCB mounting, a thermal decoupling device which protects VTDM(S) varistor against varistor failure in the event of abnormal overvoltage and can withstand 16Amps (for one decoupler), the VTDM(S) - Match Series also has the remote signalization capability. They can have different voltage values (see VTD-MV) or they can be matched (VTDM...M) and therefore rated for higher currents or a combination of these newabilities.


Data sheet		vtdm


Wide Operating Voltage Range VRMS75 V to 440 V
Very Good Protection Level Up (at Uoc/Isc)400 V to 1800 V
High Max. Discharge Current Capability Imax (8/20 µs)20000 A
Option with Decoupling Device with VTDMS Signalization
Option with Matched Varistors for Higher Current Ratings (up to 160000 A)
Options with Different Voltage Ratings in One Bulk (up to 8 different rating)
Options with Dif erent Voltage Rating and Different Current Ratings in One Bulk
Tested in accordance withIEC 61643-1, IEC 61051-1 and UL 1449
Category IEC/VDEIII / D
Operating Temperature-40 ... +80°C
Mountingon Printed Circuit Board
Response Time< 25 ns

vtdm type designation
Varsi d.o.o
Stegne 35
1521 Ljubljana
Slovenia
 tel: +386 1 500 31 80
fax: +386 1 500 32 37
e-mail: info@varsi.si

technical contact
technical@varsi.si
tehnical support