Metal-Oxide Varistors (MOVs)
Industrial High Energy Terminal Varistors > FBMOV Series
FBMOV Varistor Series
RoHS
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.
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.
Applications
• Type 1 SPD (Surge Protection Device) Products
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 overvoltage transients.
• Power supplies
• Transformer
• Residential Service Panel
• Power distribution
• Telecommunication
• IT/Data Center
Features
• RoHS compliant and Lead–free
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous:
Steady State Applied Voltage:
DC Voltage Range (VM(DC))
AC Voltage Range (VM(AC)RMS)
FBMOV
Series
Units
150 to 970
V
115 to 750
V
Transient:
Non-Repetitive Surge Current,
40,000
8/20µs Waveform (ITM)
Non-Repetitive Energy Capability,
340 to 1340
2ms Waveform (WTM)
Operating Ambient Temperature Range
-55 to +85
(TA)
-55 to +125
Storage Temperature Range (TSTG)
Temperature Coefficient (aV) of Clamping
<0.01
Voltage (VC) at Specified Test Current
Hi-Pot Encapsulation (Isolation Voltage
2500
Capability)
COATING Insulation Resistance
>1000
• Will open circuit without rupture during UL 1449
Intermediate Current Test of 100A, 500A and 1,000A,
and Short Circuit Current Test of 200,000A
• Indicator Lead for monitoring MOV
A
J
C
O
O
C
%/OC
V
MΩ
Additional Information
Datasheet
Resources
Samples
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/13/16
Metal-Oxide Varistors (MOVs)
Industrial High Energy Terminal Varistors > FBMOV Series
FBMOV Series Ratings & Specifications
Maximum Rating (85°C)
Continuous
Part
Number
Specifications (25°C)
Transient
Peak
Current
8 x 20µs
Maximum
Clamping Volt
VC at 200A
Current (8/20µs)
Varistor Voltage at 1mA
DC Test Current
Typical
Capacitance f =
1MHz
AC Volts
DC Volts
Energy
(2ms)
VM(AC)RMS
VM(DC)
WTM
ITM
Min
VN(DC)
Max
VC
C
FBMOV115M
FBMOV130M
FBMOV140M
(V)
115
130
140
(V)
150
170
180
(J)
340
380
420
(A)
40000
40000
40000
(V)
162
184.5
198
(V)
180
205
220
(V)
198
225.5
242
(V)
295
335
355
(pF)
6400
5600
5000
FBMOV150M
150
200
440
40000
216
240
264
390
4600
FBMOV175M
FBMOV230M
FBMOV250M
FBMOV275M
FBMOV300M
FBMOV320M
FBMOV385M
FBMOV420M
FBMOV440M
FBMOV460M
FBMOV510M
FBMOV550M
FBMOV625M
FBMOV750M
175
230
250
275
300
320
385
420
440
460
510
550
625
750
225
300
320
350
385
420
505
560
585
615
670
745
825
970
500
600
660
700
740
780
860
920
940
980
1040
1100
1200
1340
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
40000
243
324
351
387
423
459
558
612
643.5
675
738
819
900
1080
270
360
390
430
470
510
620
680
715
750
820
910
1000
1200
297
396
429
473
517
561
682
748
786.5
825
902
1001
1100
1320
450
585
640
700
765
825
1010
1100
1160
1220
1335
1475
1625
1950
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.
PERCENT OF RATED VALUE
100
90
80
70
60
50
40
30
20
100
50
60
70
80
90
100
110
120
130
140 150
AMBIENT TEMPERATURE ( oC)
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
For applications exceeding
85° C, ambient temperatures, the peak
CURVE
surge current and energy rating must be reduces as shown in
Figure 1.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/13/16
O1 = Virtua
T = Time
T 1 = Virtua
T 2 = Virtua
90
50
Example: For
8 s = T1 = V
20 s = T 2 = V
10
O1
10
0
-55
Peak Pulse Current Test Waveform
PERCENT OF PEAK VALUE
Peak Current, Energy and Power De-rating Curve
T
TIME
T1
T2
FIGURE 2. PEAK PULSE CURRENT TE
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
Metal-Oxide Varistors (MOVs)
Industrial High Energy Terminal Varistors > FBMOV Series
V-I Characteristic Curves
Pulse Rating Curves
100000
10000
1
440
420
385
2
550
510
460
750
1000
115
100
0.00001
0.0001
0.001
0.01
140
130
0.1
150
175
1
10
230
250
100
275
300
10
10000
Surge Current (A)
Maximum Peak Voltage (V)
625
10
1000
10
3
10
4
10
320
100
2
10
5
6
∞
1000
Peak Current (A)
Dimensions
10000
100000
10
10
100
1000
10000
Impulse Duration (µs)
Part Numbering System
Typical Dimensions in Milimeters [Inches]
FBMOV 115 M
DEVICE FAMILY
Littelfuse Thermally Protected
MOV + Fuse
VM(AC)RMS
SERIES DESIGNATOR
M: 3-Leaded Part
115V to 750V
Notes:
Typical weight: BA Series:250g and BB Series: 600g
Dimensions are in mm; inches in parentheses for reference only.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/13/16