Varistor Metal Oxide Varistor Products Page 170 Varistor Metal-Oxide Varistor Products

2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/14/17 Metal-Oxide Varistors (MOVs) Industrial High Energy Terminal Varistors > BA/BB Series BA/BB Varistor Series Description The BA and BB Series transient surge suppressors are heavy-duty industrial Metal-Oxide Varistors (MOVs) designed to provide surge protection for motor controls and power supplies used in oil-drilling, mining, transportation equipment and other heavy industrial AC line applications. These varistors have similar package construction but differ in size and ratings. The BA models are rated from 130 to 880V M(AC) . The BB models from 1100 to 2800V M(AC) . Both the BA and BB Series feature improved creep and strike capability to minimize breakdown along the package surface, a package design that provides complete electrical isolation of the disc subassembly, and rigid terminals to ensure secure wire contacts. See BA/BB Series Device Ratings and Specifications Table for part number and brand information. Features High energy absorption capability W TM BA Series 3200J BB Series 10,000J Wide operating voltage range V M(AC)RMS BA Series 130V to 880V BB Series 1100V to 2800V Rigid terminals for secure wire contact Case design provides complete electrical isolation of disc subassembly Littelfuse largest packaged disc 60mm diameter No derating up to 85C ambient RoHS compliant Agency Approvals Absolute Maximum Ratings 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. Continuous BA Series BB Series Units Steady State Applied Voltage: AC Voltage Range (V M(AC)RMS ) 130 to 880 1100 to 2800 V DC Voltage Range (V M(DC) ) 175 to 1150 1400 to 3500 V Transients: Peak Pulse Current (I TM ) For 8/20 s Current Wave (See Figure 2) 50,000 to 70,000 70,000 A Single Pulse Energy Range For 2ms Current Squarewave (W TM ) 450 to 3200 3800 to 10000 J Operating Ambient Temperature Range (T A ) -55 to +85 O C Storage Temperature Range (T STG ) -55 to +125 O C Temperature Coefficient (a V ) of Clamping Voltage (V C ) at Specified Test Current <0.01 %/ O C Hi-Pot Encapsulation (COATING Isolation Voltage Capability) (Dielectric must withstand indicated DC voltage for one minute per MIL-STD-202, Method 301) 5000 V COATING Insulation Resistance 1000 M RoHS BB Series BA Series For ratings of individual members of a series, see Device Ratings and Specifications chart Agency Agency Approval Agency File Number UL1449 E320116 - for BA Series only. Additional Information Datasheet Samples Resources Datasheet Samples Resources BA BB BA BB BA BB

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