Varistor Products
©2010 Littelfuse, Inc.
Revision: November 18, 2010
FBMOV Varistor Series
Industrial High Energy Terminal Varistors > FBMOV Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ba or /bb.html for current information.
HI–ENERGY MOV’S FBMOV Series
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.
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.
Features
t RoHS compliant and
Lead–free available
t Patent on Integrated
Thermal Protection +
Non Fragmenting Device.
t Designed to facilitate
compliance to UL1449
for SPD product:
t UL 1449 Short circuit
current rating test
section 39.2.
t UL1449 Intermediate
current test section 39.3.
t UL 1449 Limited current
abnormal over voltage
test Section 39.4.
t Will open circuit
without rupture under
100A, 500A, 1,000A,
25,000A and 200,000A
test conditions.
t Peak Current
Rating to 40 kA.
t -55°C to +85°C
operating temperature.
Agency Approvals
Absolute Maximum Ratings
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Agency Agency File Number
E320116
Continuous: FBMOV Series Units
Steady State Applied Voltage:
DC Voltage Range (V
M(DC)
) 150 to 970 V
AC Voltage Range (V
M(AC)RMS
) 115 to 750 V
Transient:
Non-Repetitive Surge Current, 8/20μs Waveform (I
TM
) 40,000 A
Non-Repetitive Energy Capability, 2ms Waveform (W
TM
) 340 to 1340 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 (Isolation Voltage Capability) 2500 V
COATING Insulation Resistance >1000 MΩ
RoHS
Applications
t Type 1 SPD (Surge Protection Device) Products
t Power supplies
t Transformer
t Residential Service Panel
t Power distribution
t Telecommunication
t IT/Data Center
