V661BA60

**Metal-Oxide Varistors** (MOVs) Industrial High Energy Terminal Varistors  >  BA/BB Series 

BA/BB Varistor Series 

## ~~a~~ ~~**RoHS**~~ 

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BB Series<br>BA Series<br>a.<br>Agency Approvals<br>Lo<br>Agency Agency Approval Agency File Number<br>UL1449 E320116 - for BA Series only.<br>~~<br>**----- End of picture text -----**<br>


## ~~**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 . The BB models from 1100 to 2800V . M(AC) 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. 

**Additional Information** 

## ~~**Features**~~ 

- High energy absorption • Case design provides capability WTM complete electrical isolation BA Series  3200J of disc subassembly 

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Datasheet Resources Samples<br>BA BA BA<br>ee<br>Datasheet Resources Samples<br>**----- End of picture text -----**<br>


   - Littelfuse largest packaged disc 60mm diameter 

- BB Series  10,000J 

- Wide operating voltage range VM(AC)RMSM(AC)RMS 

- range VM(AC)RMSM(AC)RMS • No derating up to 85ºC ambient BA Series 130V to 880V • RoHS compliant 

- BB Series 1100V to 2800V 

- Rigid terminals for secure wire contact 

~~**Absolute Maximum Ratings** OOOO~~ • For ratings of individual members of a series, see Device Ratings and Specifications chart ~~a~~ **Continuous BA Series BB Series Units Steady State Applied Voltage:** ~~|~~ AC Voltage Range (VM(AC)RMS) 130 to 880 || 1100 to 2800 V DC Voltage Range (VM(DC)) 175 to 1150 1400 to 3500 | V **Transients:** Peak Pulse Current (ITM) For 8/20µs Current Wave (See Figure 2) 50,000 to 70,000 70,000 A | Single Pulse Energy Range | For 2ms Current Squarewave (WTM) 450 to 3200 3800 to 10000 J Operating Ambient Temperature Range (TA) -55 to +85 -55 to +85 OC Storage Temperature Range (TSTG) -55 to +125 -55 to +125 OC Temperature Coefficient (a[V] ) of Clamping Voltage (VC) at Specified Test Current <0.01 <0.01 %/[O] C Hi-Pot Encapsulation (COATING Isolation Voltage Capability) 5000 5000 V (Dielectric must withstand indicated DC voltage for one minute per MIL–STD–202, Method 301) COATING Insulation Resistance 1000 1000 MΩ ~~nD~~ Maximum Torque 2.1 2.1 N.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. 

© 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: BO.12/10/20 

**Metal-Oxide Varistors** (MOVs) 

Industrial High Energy Terminal Varistors  >  BA/BB Series 

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## ~~**BA/BB Series Ratings & Specifcations**~~ 

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Maximum Rating (85°C) Specifications (25°C)<br>Continuous Transient Maximum  Typical<br>NumberPart  VRMS VDC Energy (2ms) Peak Current8 x 20µs Varistor Voltage at 1mADC Test Current Clamping Volt Vat 200A Current (8/20µs) C tance f = Capaci-1MHz<br>VM(AC) VM(DC) WTM ITM Min  VN(DC) Max VC C<br>(V) (V) (J) (A)  (V) (V) (V) (V) (pF)<br>BA Series<br>V131BA60 130 175 450 50000 184.5  205  225.5  340 20000<br>V151BA60 150 200 530 50000 216  240  264  400 16000<br>V251BA60 250 330 880 50000 351 390 429 620 10000<br>V271BA60 275 369 950 50000 387 430 473 680 9000<br>V321BA60 320 420 1100 50000 459 510 561 760 7500<br>V421BA60 420 560 1500 70000 612 680  748 1060 6000<br>V481BA60 480 640 1600 70000 675  750  825  1160 5500<br>V511BA60 510 675 1800 70000 738  820  902  1300 5000<br>V571BA60 575 730 2100 70000 819  910  1001  1420 4500<br>V661BA60 660 850 2300 70000 945  1050  1155  1640 4000<br>V751BA60 750 970 2600 70000 1080 1200 1320 1880 3500<br>V881BA60 880 1150 3200 70000 1350 1500 1650 2340 2700<br>BB Series<br>V112BB60 1100 1400 3800 70000 1665 1850 2035 2940 2200<br>V142BB60 1400 1750 5000 70000 2070 2300 2530 3600 1800<br>V172BB60 1700 2150 6000 70000 2500 2765 3030 4300 1500<br>V202BB60 2000 2500 7500 70000 2970 3300 3630 5200 1200<br>V242BB60 2400 3000 8600 70000 3510 3900 4290 6200 1000<br>V282BB60 2800 3500 10000 70000 4230 4700 5170 7400 800<br>**----- End of picture text -----**<br>


**NOTE:** Average power dissipation of transients not to exceed 2.5W. See Figures 3 and 4 for more information on power dissipation. 

© 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: BO.12/10/20 

**Metal-Oxide Varistors** (MOVs) Industrial High Energy Terminal Varistors  >  BA/BB Series 

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Power Dissipation Ratings<br>100<br>90<br>80<br>70<br>60<br>50<br>40<br>30<br>20<br>10<br>0<br>-55 50 60 70 80 90 100 110 120 130 140 150<br>Figure 1 AMBIENT TEMPERATURE ( [o] C)<br>Should transients occur in rapid succession, the average power<br>dissipation required is simply the energy (watt-seconds) per pulse<br>times the number of pulses per second. The power so developed<br>must be within the specifications shown on the Device Ratings<br>and Characteristics Table for the specific device. Furthermore,<br>the operating values need to be derated at high temperatures as<br>shown in the above diagram. Because varistors can only dissipate<br>a relatively small amount of average power they are, therefore, not<br>suitable for repetitive applications that involve substantial amounts<br>of average power dissipation.<br>Stand by Power Dissipation vs Applied V Rms  at Varied<br>Temperatures<br>TYPICAL TEMPERATURE COEFFICIENT<br>OF POWER DISSIPATION = 2.2%/ [o] C<br>1.0<br>0.8 MAX AT TA = 85 [o] C<br>0.6<br>0.4<br>0.2 MAX AT TA = 25 [o] C<br>0.1<br>0.08 TYP AT T A  = 25 [o] C<br>0.06<br>0.04<br>80 90 100 110<br>PERCENTAGE OF MAXIMUM RATED V RMS (%)<br>Figure 3<br>PERCENT OF RATED VALUE<br>RMS<br>OF RATED V<br>POWER DISSIPATION (W) PER kV<br>**----- End of picture text -----**<br>


## ~~**Peak Pulse Current Test Waveform**~~ 

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100<br>90<br>50<br>10<br>O1 T TIME<br>T1<br>T2<br>Figure 2<br>PERCENT OF PEAK VALUE<br>**----- End of picture text -----**<br>


01 = Virtual Origin of Wave 

T  = Time from 10% to 90% of Peak T1 = Rise Time = 1.25 x T T2 = Decay Time **Example** - For an 8/20 µs Current Waveform: 8µs = T1 = Rise Time 20µs = T2 = Decay Time 

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Typical Stability of Standby Power Dissipation at Rated<br>V RMS  vs  Time<br>1,000 HOURS, TA = 85 [o] C<br>0.5<br>0.4<br>0.3<br>0.2<br>0.1<br>0<br>0 10 100 1,000<br>Figure 4 TIME AT RATED V RMS (HOURS)<br>RMS<br>OF RATED V<br>POWER DISSIPATION (W) PER kV<br>**----- End of picture text -----**<br>


© 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: BO.12/10/20 

**Metal-Oxide Varistors** (MOVs) Industrial High Energy Terminal Varistors  >  BA/BB Series 

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Maximum Clamping Voltage BA Series<br>**----- End of picture text -----**<br>


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Maximum Clamping Voltage BB Series<br>**----- End of picture text -----**<br>


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V131BA60 - V881BA60<br>**----- End of picture text -----**<br>


## **V112BB60 - V282BB60** 

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6,000<br>5,000 MAX CLAMPING VOLTAGE V511BA60<br>DISC SIZE 60mm<br>4,000 130 TO 880VM(AC) RATING V481BA60V421BA60<br>3,000 TA = -55 [o] C TO 85 [o] C<br>2,000<br>V881BA60<br>V751BA60<br>V661BA60<br>V571BA60<br>1,000<br>900<br>800<br>700<br>600 V321BA60<br>500 V271BA60V251BA60<br>400<br>300 V151BA60<br>V131BA60<br>200<br>10 [-2] 10 [-1] 10 [0] 10 [1] 10 [2] 10 [3] 10 [4] 10 [5]<br>Figure 5 PEAK AMPERES (A)<br>Repetitive Surge Capability BA Series<br>V131BA60 - V321BA60<br>50,000<br>1 DISC SIZE 60mm<br>20,000 10 2 V131BA60 - V321BA60<br>10,000<br>5,000 10 [2]<br>2,000 10 [3]<br>1,000 10 [4]<br>500<br>10 [5]<br>200<br>100 10 [6]<br>50<br>INDEFINITE<br>20<br>10<br>20 100 1,000 10,000<br>Figure 7 IMPULSE DURATION (μs)<br>MAXIMUM PEAK VOLTS (V)<br>SURGE CURRENT (A)<br>**----- End of picture text -----**<br>


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30,000<br>MAX CLAMPING VOLTAGE<br>DISC SIZE 60mm<br>20,000 1100 TO 2800VM(AC) RATING<br>TA = -55 [o] C TO 85 [o] C<br>10,000<br>9,000<br>8,000<br>7,000<br>6,000 V282BB60<br>5,000 V242BB60<br>4,000 V202BB60<br>V172BB60<br>3,000 V142BB60<br>V112BB60<br>2,000<br>10 [-2] 10 [-1] 10 [0] 10 [1] 10 [2] 10 [3] 10 [4] 10 [5]<br>PEAK AMPERES (A)<br>Figure 6<br>Repetitive Surge Capability BB Series<br>V421BA60 - V282BB60<br>100,000<br>1 DISC SIZE 60mm<br>50,000 V421BA60 - V282BB60<br>20,000 10 2<br>10,000<br>5,000 10 [2]<br>2,000 10 [3]<br>1,000 10 [4]<br>500<br>10 [5]<br>200<br>100 10 [6]<br>50<br>20 INDEFINITE<br>10<br>20 100 1,000 10,000<br>IMPULSE DURATION (μs)<br>Figure 8<br>MAX PEAK VOLTS (V)<br>SURGE CURRENT (A)<br>**----- End of picture text -----**<br>


published specifications, but it does not prevent the device from continuing to function, and to provide ample protection. **NOTE:** If pulse ratings are exceeded, a shift of VN(DC) (at specified current) of more than +/-10% could result.This type of shift, which normally results in a decrease of VN(DC), may result in the device not meeting the original 

||~~**Physical Specifcations**~~|~~**Physical Specifcations**~~||
|---|---|---|---|
||**Lead Material**|BA / BB – Copper with Tin Plating||
||**Insulating Material**<br>**Device Labeling**|Cured, fame retardant epoxy polymer meets<br>UL94V–0 requirements.<br>Marked with LF, Part Number and Date code||



## ~~**Environmental Specifcations**~~ 

|**Operating Temperature**|-55°C to +85°C|
|---|---|
|**Storage Temperature**|-55°C to +125°C|
|**Humidity Aging**|+85°C, 85% RH, 1000 hours<br>+/- 5% typical resistance change|
|**Thermal Shock**|+85°C to -40°C 10 times<br>+/- 5% typical resistance change|
|**Solvent Resistance**|MIL–STD–202, Method 215|
|**Moisture Sensitivity**|Level 1, J-STD-020|



© 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: BO.12/10/20 

**Metal-Oxide Varistors** (MOVs) Industrial High Energy Terminal Varistors  >  BA/BB Series 

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## ~~**Dimensions**~~ 

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40±2<br>(1.575 ± 0.08)<br>M6 INTERNATIONAL<br>THREAD<br>95 (3.74)<br>MAX<br>79±3<br>(3.11±0.12)<br>6 (0.24)<br>86±2<br>(3.38±0.08)<br>100 (3.94)<br>Notes:<br>Typical weight: BA Series:250g and BB Series: 600g<br>Dimensions are in mm; inches in parentheses for reference only.<br>**----- End of picture text -----**<br>


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BA Series M6 INTERNATIONAL THREAD<br>PAN HEAD SLOTTED SCREW<br>40.0 (1.575)<br>7.0 23.5<br>(0.28) (0.925)<br>86.0 (3.38)<br>100 (3.94)<br>BB Series M6 INTERNATIONAL THREAD<br>PAN HEAD SLOTTED SCREW<br>40.0 (1.575)<br>10.5<br>(0.41)<br>7.0 44.5<br>(0.28) (1.752)<br>10.5<br>(0.41)<br>86.0 (3.38)<br>100 (3.94)<br>**----- End of picture text -----**<br>


## ~~**Part Numbering System**~~ 

## **V XX  X BA 60** 

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VARISTOR DISC SIZE (60mm)<br>V<br>M(AC) SERIES DESIGNATOR<br>First Two Significant Digits* BA or BB<br>V<br>M(AC)<br>Decade Multiplier*<br>(1 or 2)<br>**----- End of picture text -----**<br>


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*Refer to Rating & Specifications table<br>        Examples:<br>        130 VM(AC) = 131<br>        2800 VM(AC) = 282<br>**----- End of picture text -----**<br>


**Disclaimer Notice -** Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications.  Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics. 

© 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: BO.12/10/20