Varistor Products
Industrial High Energy Terminal Varistors > FBMOV Series
RoHS
FBMOV Varistor Series
Description
The Littelfuse FBMOV Series thermally protected and
non-fragmenting varistor represents a new development
in circuit protection. It consists of a 40kA varistor building
block (MOV) with an integral thermally activated element
designed to open in the event of overheating due to
abnormal over-voltage, limited current conditions.
FBMOV series devices also include a varistor series fuse
which prevents the part from rupturing when subjected to
high fault current (up to 200kA).The tubular fuse-like body
allows for easy mechanical connection in the application.
Agency Approvals
Agency
Agency File Number
Another feature of FBMOV is an indicator lead, which may
be connected to monitoring circuitry and used to signal if
the MOV has been disconnected.
FBMOV series devices offer quick thermal response due
to the close proximity of the integrated fusing thermal
element to the MOV body. The integrated configuration
also offers lower inductance than most discreet solutions
resulting in improved clamping performance to fast over-
voltage transients.
E320116
Features
RoHS compliant and
Lead–free available
Patent on Integrated
Thermal Protection +
Non Fragmenting Device.
Designed to facilitate
compliance to UL1449
for SPD product:
UL 1449 Short circuit
current rating test
section 39.2.
UL1449 Intermediate
current test section 39.3.
UL 1449 Limited current
abnormal over voltage
test Section 39.4.
Will open circuit
without rupture under
100A, 500A, 1,000A,
25,000A and 200,000A
test conditions.
Peak Current
Rating to 40 kA.
-55°C to +85°C
operating temperature.
Applications
Type 1 SPD (Surge Protection Device) Products
Power supplies
Transformer
Residential Service Panel
Power distribution
IT/Data Center
Absolute Maximum Ratings
Continuous:
Steady State Applied Voltage:
DC Voltage Range (V
M(DC)
)
AC Voltage Range (V
M(AC)RMS
)
Transient:
Non-Repetitive Surge Current, 8/20μs Waveform (I
TM
)
Non-Repetitive Energy Capability, 2ms Waveform (W
TM
)
Operating Ambient Temperature Range (T
A
)
Storage Temperature Range (T
STG
)
Temperature Coefficient (a
V
) of Clamping Voltage (V
C
) at Specified Test Current
Hi-Pot Encapsulation (Isolation Voltage Capability)
COATING Insulation Resistance
©2010 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ba or /bb.html for current information.
Revision: November 18, 2010
FBMOV Series
150 to 970
115 to 750
40,000
340 to 1340
-55 to +85
-55 to +125
<0.01
2500
>1000
Units
V
V
A
J
O
C
O
C
%/
O
C
V
MΩ
FBMOV Varistor Series
HI–ENERGY MOV’S
FBMOV Series
Telecommunication
Varistor Products
Industrial High Energy Terminal Varistors > FBMOV Series
FBMOV Series Ratings & Specifications
Maximum Rating (85°C)
Continuous
Part
Number
AC Volts
V
M(AC)RMS
FBMOV115M
FBMOV130M
FBMOV140M
FBMOV150M
FBMOV175M
FBMOV230M
FBMOV250M
FBMOV275M
FBMOV300M
FBMOV320M
FBMOV385M
FBMOV420M
FBMOV440M
FBMOV460M
FBMOV510M
FBMOV550M
FBMOV625M
FBMOV750M
(V)
115
130
140
150
175
230
250
275
300
320
385
420
440
460
510
550
625
750
DC Volts
V
M(DC)
(V)
150
170
180
200
225
300
320
350
385
420
505
560
585
615
670
745
825
970
Transient
Energy
(2ms)
W
TM
(J)
340
380
420
440
500
600
660
700
740
780
860
920
940
980
1040
1100
1200
1340
Peak
Current
8 x 20μs
I
TM
(A)
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
Varistor Voltage at 1mA
DC Test Current
Min
(V)
162
184
200
216
243
324
351
387
423
459
558
612
643
675
738
819
900
1080
V
N(DC)
(V)
180
205
220
240
270
360
390
430
470
510
620
680
715
750
820
910
1000
1200
Max
(V)
198
226
240
264
297
396
429
473
517
561
682
748
787
825
902
1001
1100
1320
Specifications (25°C)
Maximum
Clamping Volt
V
C
at 200A
Current (8/20μs)
V
C
(V)
295
335
355
390
450
585
640
700
765
825
1010
1100
1160
1220
1335
1475
1625
1950
Typical
Capaci-
tance
f
=
1MHz
C
(pF)
6400
5600
5000
4600
3800
3000
2800
2500
2300
2160
1800
1640
1580
1500
1360
1260
1110
920
NOTE: Average power dissipation of transients not to exceed 2.5W. See Figures 3 and 4 for more information on power dissipation.
Peak Current, Energy and Power De-rating Curve
Peak Pulse Current Test Waveform
100
PERCENT OF PEAK VALUE
100
90
PERCENT OF RATED VALUE
90
80
70
60
50
40
30
20
10
0
-55
50
60
70
80
90
100
110
120
130
140 150
50
10
O
1
T
T
1
T
2
TIME
AMBIENT TEMPERATURE (
o
C)
For applications exceeding 85° C, ambient temperatures, the peak
surge current and energy rating must be reduces as shown in
Figure 1.
0
1
= Virtual Origin of Wave
T = Time from 10% to 90% of Peak
T
1
= Rise Time = 1.25 x T
T
2
= Decay Time
Example
- For an 8/20
μs
Current Waveform:
8μs = T
1
= Rise Time
20μs = T
2
= Decay Time
FBMOV Varistor Series
Revision: November 18, 2010
©2010 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ba or /bb.html for current information.
Varistor Products
Industrial High Energy Terminal Varistors > FBMOV Series
V-I Characteristic Curves
10000
Pulse Rating Curves
100000
1
625
750
2
10000
Surge Current (A)
Maximum Peak Voltage (V)
385
420
440
460
510
550
10
10
2
1000
1000
10
3
4
5
10
10
100
10
∞
115
100
0.00001
130
140
150
175
230
250
275
300
320
6
0.0001
0.001
0.01
0.1
1
10
100
1000
10000
100000
Peak Current (A)
10
10
100
1000
10000
Impulse Duration (μs)
Dimensions
Typical Dimensions in Milimeters [Inches]
Part Numbering System
FBMOV 115 M
DEVICE FAMILY
Littelfuse
Thermally
Protected
MOV + Fuse
SERIES DESIGNATOR
M: 3-Leaded Part
VM
(AC)RMS
115V to 750V
Notes:
Typical weight: BA Series:250g and BB Series: 600g
Dimensions are in mm; inches in parentheses for reference only.
©2010 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ba or /bb.html for current information.
Revision: November 18, 2010
FBMOV Varistor Series
HI–ENERGY MOV’S
FBMOV Series
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