TMOV34S251M Littelfuse Inc, TMOV34S251M Datasheet - Page 6

• Manufacturer Part Number: TMOV34S251M
• Description: VARISTOR THERMAL 250V 40KA 20MM
• Manufacturer: Littelfuse Inc
• Series: TMOV34S®r

Specifications of TMOV34S251M

• Varistor Voltage: 429V
• Current-surge: 40kA
• Number Of Circuits: 1
• Maximum Ac Volts: 250VAC
• Maximum Dc Volts: 330VDC
• Energy: 370J
• Package / Case: 34mm Square 3-Lead
• Product: MOV
• Voltage Rating Dc: 330 V
• Voltage Rating Ac: 250 V
• Clamping Voltage: 650 V
• Peak Surge Current: 40 KA
• Surge Energy Rating: 370 J
• Capacitance: 5000 pF
• Operating Temperature Range: - 55 C to + 85 C
• Mounting: Radial
• Current Rating: 40000 A
• Dimensions: 37 mm L x 11.8 mm H
• Termination Style: Radial
• Tolerance: 20 %
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

Industrial High Energy Thermally Protected Varistors > TMOV34S
TMOV34S
Lead Configurations
TMOV34S
The application examples below show how the monitor lead on the TMOV34S
element has been opened. This signifies that the circuit is no longer protected from transients by the MOV.
Application Example 1
thermal element opens.
Application Example 2
This circuit utilizes an optocoupler to provide
galvanic isolations between the TMOV34S
varistor and the indicating or alarm circuitry.
Line
Line Fuse
Neutral
Line
®
Varistor Series
Line Fuse
Neutral
TMOV34S “M”
®
Varistor
TMOV34S “M”
Varistor Application Examples
TMOV34S
Varistor
®
"E" 2-Lead Varistor
LED
R
R
AC OPTOCOUPLER
Thermal
Fuse
Element
MOV
®
TO STATUS
ANNUNCIATOR
LIGHT/ALARM
Varistor Products
Revision: March 2, 2011
Application Example 3
This circuit illustrates the use of the monitoring lead of
the TMOV34S
operation the load switch relay solenoid is powered via the
monitor lead of the TMOV34S
illuminate.
guideline only. Verification of actual indicator circuitry
is the responsibility of the end user. Component
values selected must be appropriate for the specific
AC line voltage service and application.
Line
Line Fuse
®
Neutral
Series
TMOV34S “M”
Please refer to www.littelfuse.com/series/tmov34s.html for current information.
®
TMOV34S
Varistor
can be used to indicate that the thermal
®
1
varistor to ensure that equipment is only
2
®
Monitor Lead
3
"M" 3-Lead Varistor
Specifications are subject to change without notice.
Fault LED
(Normallyoff)
®
2
1
3
Load Switch Relay
(loss of protection)
Monitor Lead
Thermal
Fuse
Element
R
"Load Powered"
neon lamp
MOV
©2011 Littelfuse, Inc.