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.
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.
Agency Approvals
Agency
Agency File Number
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
tꢀ RoHS compliant and
tꢀ UL 1449 Limited current
abnormal over voltage
test Section 39.4.
Lead–free available
Applications
tꢀ Patent on Integrated
Thermal Protection +
tꢀ Will open circuit
tꢀ Type 1 SPD (Surge Protection Device) Products
tꢀ Power supplies
Non Fragmenting Device.
without rupture under
100A, 500A, 1,000A,
25,000A and 200,000A
test conditions.
tꢀ Designed to facilitate
compliance to UL1449
for SPD product:
tꢀ Transformer
tꢀ Residential Service Panel
tꢀ Power distribution
tꢀ Peak Current
tꢀ UL 1449 Short circuit
current rating test
section 39.2.
Rating to 40 kA.
tꢀ Telecommunication
tꢀ IT/Data Center
tꢀ -55°C to +85°C
operating temperature.
tꢀ UL1449 Intermediate
current test section 39.3.
Absolute Maximum Ratings
tꢀ'PSꢀSBUJOHTꢀPGꢀJOEJWJEVBMꢀNFNCFSTꢀPGꢀBꢀTFSJFTꢁꢀTFFꢀ%FWJDFꢀ3BUJOHTꢀBOEꢀ4QFDJmDBUJPOTꢀDIBSU
Continuous:
FBMOV Series
Units
Steady State Applied Voltage:
DC Voltage Range (VM(DC)
AC Voltage Range (VM(AC)RMS
Transient:
Non-Repetitive Surge Current, 8/20μs Waveform (ITM
Non-Repetitive Energy Capability, 2ms Waveform (WTM
Operating AmbientTemperature Range (TA)
)
150 to 970
115 to 750
V
V
)
)
40,000
340 to 1340
-55 to +85
-55 to +125
<0.01
A
J
OC
OC
)
StorageTemperature Range (TSTG
)
Temperature Coefficient (aV) of Clamping Voltage (VC) at SpecifiedTest Current
Hi-Pot Encapsulation (Isolation Voltage Capability)
COATING Insulation Resistance
%/OC
2500
V
>1000
MΩ
©2010 Littelfuse, Inc.
FBMOVVaristor Series
Specifications are subject to change without notice.
Revision: November 18, 2010
Please refer to www.littelfuse.com/series/ba or /bb.html for current information.