Varistor Metal Oxide Varistor Products Page 105 Varistor Metal-Oxide Varistor Products

2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/14/17 Metal-Oxide Varistors (MOVs) Radial Lead Varistors > UltraMOV TM 25S Varistor Series RoHS Description Features Lead-free and RoHS compliant. High peak surge current rating (I TM ) 22kA, single 8/20 s pulse, (25mm) Standard operating voltage range compatible with common AC line voltages (115 to 750VAC) Custom voltage types available Standard lead form and lead space options Agency Approvals Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart Continuous UltraMOV 25S Varistor Series Units Steady State Applied Voltage: AC Voltage Range (V M(AC)RMS ) 115 to 750 V DC Voltage Range (V M(DC) ) 150 to 970 V Transients: Peak Pulse Current (I TM ) 8x20 s Current Wave Single Pulse 22,000 A Single-Pulse Energy Capability (W TM ) 2ms Current Wave 230 to 890 J Operating Ambient Temperature Range (T A ) -55 to +85 C Storage Temperature Range (T STG ) -55 to +125 C Temperature Coefficient (a V ) of Clamping Voltage (V C ) at Specified Test Current <0.01 %/C Hi-Pot Encapsulation (COATING Isolation Voltage Capability) Dielectic Withstand DC for 1 min per MIL-STD-202, Method 301 2500 V Insulation Resistance of the Epoxy Coating 1000 M CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. The UltraMOV 25S Varistor Series is designed for applications requiring high peak surge current ratings and high energy absorption capability. UltraMOV varistors are primarily intended for use in AC Line Voltage applications such as Surge Protective Devices (SPD), Uninterruptable Power Supplies (UPS), AC Power Taps, AC Power Meters, or other products that require voltage clamping of high transient surge currents from sources such as lightning, inductive load switching, or capacitor bank switching. These devices have 25mm square forms are produced in a radial lead package and offered with straight leads. UltraMOV 25S varistors are manufactured with recognized epoxy encapsulation and are rated for ambient temperatures up to 85C with no derating. This 25S Series is LASER-branded and is supplied in bulk packaging. UltraMOV 25S Varistor Series Agency Agency Approval Agency File Number UL1449 E320116 22.2-1 091788 IEC 61051-1, IEC61051-2, IEC 60950-1 (Annex Q) 116895 Additional Information Datasheet Samples Resources

Previous Page
Next Page