TMOV20RP275E Littelfuse Inc, TMOV20RP275E Datasheet - Page 6

• Manufacturer Part Number: TMOV20RP275E
• Description: VARISTOR THERML 275V 10KA 20MM
• Manufacturer: Littelfuse Inc
• Series: TMOVr
• Type: MOVr

Specifications of TMOV20RP275E

• Varistor Voltage: 473V
• Current-surge: 6.5kA
• Number Of Circuits: 1
• Maximum Ac Volts: 275VAC
• Energy: 190J
• Package / Case: Disc 20mm
• Suppressor Type: Transient Voltage
• Peak Surge Current @ 8/20µs: 10000A
• Varistor Case: 20mm DISC
• Clamping Voltage Vc Max: 710V
• Peak Energy (10/1000us): 190J
• Voltage Rating Vac: 275V
• Product: MOV
• Voltage Rating Dc: 473 V
• Voltage Rating Ac: 275 V
• Clamping Voltage: 710 V
• Peak Surge Current: 10 KA
• Surge Energy Rating: 190 J
• Capacitance: 900 pF
• Operating Temperature Range: - 55 C to + 85 C
• Mounting: Radial
• Dimensions: 20 mm Dia. x 31 mm L
• Termination Style: Radial
• Brand/series: TMOV R Series
• Current, Peak: 10000 A
• Current, Surge: 6000 A
• Energy Rating: 190 Joules
• Package: Leads
• Technology: Metal Oxide
• Voltage, Ac: 275 VAC
• Voltage, Clamping: 710 V
• Voltage, Dc: 700 VDC
• Voltage, Varistor: 473
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Maximum Dc Volts: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: TMOV20R275EP; TMOV20R275EP

TMOV
Note: MOVs are non-polarized passive elements
Lead Configurations
iTMOV
The application examples below show how the indicator lead on the iTMOV
element has been opened. This signifies that the circuit is no longer protected from transients by the MOV.
Application Example 1
In this case, the LED is normally on, and is off when the
thermal element opens.
Application Example 2
This circuit utilizes an optocoupler to provide
galvanic isolations between the iTMOV
and the indicating or alarm circuitry.
®
and i TMOV
Line
®
Line
Line Fuse
Neutral
Varistor Application Examples
Line Fuse
Neutral
iTMOV Varistor
®
Varistor Series
iTMOV Varistor
TMOV
Radial Lead Varistors > TMOV
®
Varistor
R
Thermal
Fuse
Element
LED
MOV
R
AC OPTOCOUPLER
®
varistor
TO STATUS
ANNUNCIATOR
LIGHT/ALARM
Varistor Products
Revision: January 9, 2009
®
and iTMOV
70
Application Example 3
This circuit illustrates the use of the monitoring lead of
the iTMOV
operated when overvoltage protection present. In normal
operation the load switch relay solenoid is powered via the
indicator lead of the iTMOV
thermal element being activated, the relay will de-activate,
cutting power to the protected circuit and the fault LED will
illuminate.
Please note: Indicator circuits are provided as a
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
®
®
can be used to indicate that the thermal
iTMOV Varistor
varistor to ensure that equipment is only
1
Please refer to www.littelfuse.com/series/tmov.html for current information.
iTMOV
Monitor Lead
2
3
®
Varistor
®
Specifications are subject to change without notice.
varistor. In the event of the
Fault LED
(Normallyoff)
2
1
3
Monitor Lead
Thermal
Fuse
Element
Load Switch Relay
(loss of protection)
MOV
R
"Load Powered"
neon lamp
©2008 Littelfuse, Inc.