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Varistor Products
Industrial High Energy Terminal Varistors > BA/BB Series
BA/BB Varistor Series
BB Series
Agency Approvals
Agency Agency File Number
E320116 - for BA Series only.
BA Series
RoHS
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 UL– recognized varistors have similar package
construction but differ in size and ratings. The BA models
are rated from 130 to 880V
to 2800V
M(AC)
.
. The BB models from 1100
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
85ºC ambient
RoHS compliant
•
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous BA Series BB Series Units
Steady State Applied Voltage:
AC Voltage Range (V
DC Voltage Range (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 (W
Operating Ambient Temperature Range (T
Storage Temperature Range (T
Temperature Coefficient (a
) -55 to +125 -55 to +125
STG
V
) of Clamping Voltage (VC) at Specified Test Current <0.01 <0.01 %/OC
Hi-Pot Encapsulation (COATING Isolation Voltage Capability)
(Dielectric must withstand indicated DC voltage for one minute per MIL–STD–202, Method 301)
COATING Insulation Resistance 1000 1000 MΩ
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.
) 130 to 880 1100 to 2800 V
M(AC)RMS
) 175 to 1150 1400 to 3500 V
M(DC)
) 450 to 3200 3800 to 10000 J
) -55 to +85 -55 to +85
A
TM
5000 5000 V
O
C
O
C
MOV’S
BA/BB Series
HI–ENERGY
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ba or /bb.html for current information.
151
Revised: May 8, 2013
BA/BB Varistor Series
Page 2
Varistor Products
Industrial High Energy Terminal Varistors > BA/BB Series
BA/BB Series Ratings & Specifications
Maximum Rating (85°C) Specifications (25°C)
Continuous Transient
Part
Number
Energy
(2ms)
WTM I
V
V
M(DC)
DC
V
RMS
V
M(AC)
Peak
Current
8 x 20μs
Min V
TM
Varistor Voltage at 1mA
DC Test Current
N(DC)
Max VC C
(V) (V) (J) (A) (V) (V) (V) (V) (pF)
BA Series
V131BA60 130 175 450 50000 184 200 228 340 20000
V151BA60 150 200 530 50000 212 240 268 400 16000
V251BA60 250 330 880 50000 354 390 429 620 10000
V271BA60 275 369 950 50000 389 430 473 680 9000
V321BA60 320 420 1100 50000 462 510 561 760 7500
V421BA60 420 560 1500 70000 610 680 748 1060 6000
V481BA60 480 640 1600 70000 670 750 825 1160 5500
V511BA60 510 675 1800 70000 735 820 910 1300 5000
V571BA60 575 730 2100 70000 805 910 1000 1420 4500
V661BA60 660 850 2300 70000 940 1050 1160 1640 4000
V751BA60 750 970 2600 70000 1080 1200 1320 1880 3500
V881BA60 880 1150 3200 70000 1290 1500 1650 2340 2700
Maximum
Clamping Volt
VC at 200A
Current (8/20μs)
Typical
Capaci-
tance f =
1MHz
BB Series
V112BB60 1100 1400 3800 70000 1620 1800 2060 2940 2200
V142BB60 1400 1750 5000 70000 2020 2200 2550 3600 1800
V172BB60 1700 2150 6000 70000 2500 2700 3030 4300 1500
V202BB60 2000 2500 7500 70000 2970 3300 3630 5200 1200
V242BB60 2400 3000 8600 70000 3510 3900 4290 6200 1000
V282BB60 2800 3500 10000 70000 4230 4700 5170 7400 800
NOTE: Average power dissipation of transients not to exceed 2.5W. See Figures 3 and 4 for more information on power dissipation.
BA/BB Varistor Series
152
Revised: May 8, 2013
Please refer to www.littelfuse.com/series/ba or /bb.html for current information.
Specifications are subject to change without notice.
© 2013 Littelfuse, Inc.
Page 3
Varistor Products
Industrial High Energy Terminal Varistors > BA/BB Series
Power Dissipation Ratings
100
90
80
70
60
50
40
30
20
PERCENT OF RATED VALUE
10
0
-55 50 60 70 80 90 100 110 120 130 140 150
Figure 1 Figure 2
AMBIENT TEMPERATURE (
o
C)
Peak Pulse Current Test Waveform
Should transients occur in rapid succession, the average power
dissipation required is simply the energy (watt-seconds) per pulse
times the number of pulses per second. The power so developed
must be within the specifications shown on the Device Ratings
and Characteristics Table for the specific device. Furthermore,
the operating values need to be derated at high temperatures as
shown in the above diagram. Because varistors can only dissipate
a relatively small amount of average power they are, therefore, not
suitable for repetitive applications that involve substantial amounts
of average power dissipation.
100
90
50
10
PERCENT OF PEAK VALUE
O
1
T
T
1
T
2
TIME
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
Stand by Power Dissipation vs Applied V
Temperatures
TYPICAL TEMPERATURE COEFFICIENT
OF POWER DISSIPATION = 2.2%/
1. 0
MAX AT TA = 85oC
0.8
0.6
0.4
RMS
MAX AT TA = 25oC
0.2
0.1
OF RATED V
TYP AT TA = 25oC
0.08
0.06
POWER DISSIPATION (W) PER kV
0.04
80 90 100 110
PERCENTAGE OF MAXIMUM RATED V
o
C
at Varied
Rms
RMS
(%)
Typical Stability of Standby Power Dissipation at Rated
V
vs Time
RMS
Figure 3 Figure 4
1,000 HOURS, TA = 85oC
0.5
0.4
RMS
0.3
0.2
OF RATED V
0.1
POWER DISSIPATION (W) PER kV
0
0 10 100 1,000
TIME AT RATED V
RMS
(HOURS)
MOV’S
BA/BB Series
HI–ENERGY
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ba or /bb.html for current information.
153
Revised: May 8, 2013
BA/BB Varistor Series
Page 4
Varistor Products
5
Industrial High Energy Terminal Varistors > BA/BB Series
Maximum Clamping Voltage BA Series
V131BA60 - V881BA60
6,000
MAX CLAMPING VOLTAGE
5,000
DISC SIZE 60mm
4,000
130 TO 880V
3,000
= -55oC TO 85oC
T
A
2,000
V881BA60
V751BA60
V661BA60
V571BA60
1,000
900
800
700
V321BA60
600
V271BA60
500
V251BA60
MAXIMUM PEAK VOLTS (V)
400
V151BA60
300
V131BA60
200
-210-1
10
Figure 5 Figure 6
RATING
M(AC)
10010110210310410
PEAK AMPERES (A)
V511BA60
V481BA60
V421BA60
Repetitive Surge Capability BA Series
V131BA60 - V321BA60
50,000
20,000
10,000
5,000
2,000
1,000
SURGE CURRENT (A)
Figure 7 Figure 8
500
200
100
50
20
10
10
10
10
10
10
6
10
INDEFINITE
20
1
2
3
4
5
2
100
IMPULSE DURATION (μs)
DISC SIZE 60mm
V131BA60 - V321BA60
1,000 10,000
Maximum Clamping Voltage BB Series
V112BB60 - V282BB60
Repetitive Surge Capability BB Series
V421BA60 - V282BB60
30,000
MAX CLAMPING VOLTAGE
DISC SIZE 60mm
1100 TO 2800V
20,000
T
= -55oC TO 85oC
A
10,000
9,000
8,000
7,000
6,000
V282BB60
5,000
V242BB60
V202BB60
4,000
MAX PEAK VOLTS (V)
V172BB60
3,000
V142BB60
V112BB60
2,000
-210-1
10
100,000
1
50,000
20,000
10
10,000
SURGE CURRENT (A)
2
5,000
10
3
10
2,000
4
1,000
10
500
5
10
200
6
100
10
50
20
10
INDEFINITE
20 100 1,000 10,000
RATING
M(AC)
10010110210310410
PEAK AMPERES (A)
DISC SIZE 60mm
V421BA60 - V282BB60
2
IMPULSE DURATION (μs)
5
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 published specifications, but it does not prevent the device from continuing to function, and to provide ample protection.
Physical Specifications
Lead Material BA / BB – Copper with Tin Plating
Insulating Material
Device Labeling
Cured, flame retardant epoxy polymer
meets UL94V–0 requirements.
Marked with LF, Part Number and Date
code
Environmental Specifications
Operating/Storage
Temperature
Humidity Aging
Thermal Shock
-55°C to +85°C/
-55°C to +125°C
+85°C, 85% RH, 1000 hours
+/- 5% typical resistance
change
+85°C to -40°C 10 times
+/- 5% typical resistance
change
Solvent Resistance MIL–STD–202, Method 215F
Moisture Sensitivity Level 1, J–STD–020C
BA/BB Varistor Series
154
Revised: May 8, 2013
Please refer to www.littelfuse.com/series/ba or /bb.html for current information.
Specifications are subject to change without notice.
© 2013 Littelfuse, Inc.
Page 5
Varistor Products
Industrial High Energy Terminal Varistors > BA/BB Series
Dimensions
40±2
(1.575 ± 0.08)
6 (0.24)
86±2
(3.38±0.08)
100 (3.94)
Notes:
Typical weight: BA Series:250g and BB Series: 600g
Dimensions are in mm; inches in parentheses for reference only.
M6 INTERNATIONAL
THREAD
Part Numbering System
V XX X BA 60
79±3
(3.11±0.12)
95 (3.74)
MAX
7. 0
(0.28)
(0.28)
BA Series
40.0 (1.575)
86.0 (3.38)
100 (3.94)
BB Series
40.0 (1.575)
7. 0
86.0 (3.38)
100 (3.94)
M6 INTERNATIONAL THREAD
PAN HEAD SLOTTED SCREW
23.5
(0.925)
M6 INTERNATIONAL THREAD
PAN HEAD SLOTTED SCREW
10.5
(0.41)
44.5
(1.752)
10.5
(0.41)
VARISTOR
V
V
V
M(AC)
M(AC)
M(AC)
First Two Significant Digits*
V
M(AC)
Decade Multiplier*
(1 or 2)
*Refer to Rating & Specifications table
Examples:
130 V
2800 V
M(AC) = 131
M(AC) = 282
DISC SIZE (60mm)
SERIES DESIGNATOR
BA or BB
MOV’S
BA/BB Series
HI–ENERGY
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ba or /bb.html for current information.
155
Revised: May 8, 2013
BA/BB Varistor Series
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