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TMOV34S321M The TMOV34S321M is a Littelfuse TMOV34S series thermally protected varistor with a varistor voltage of 510V and peak pulse current rating of 40kA. It comes in a square 34mm through-hole package.
Mfr Part #:

TMOV34S321M

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The TMOV34S321M is a Littelfuse TMOV34S series thermally protected varistor with a varistor voltage of 510V and peak pulse current rating of 40kA. It comes in a square 34mm through-hole package.
Total Stock: 300 pcs
$ Price Range: $13.27

TMOV34S321M Available from 1 distributor

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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300 pcs
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TMOV34S321M Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Capacitance @ Frequency
Current
Energy
Features
Industrial Grade
Insulation Resistance
Isolation Voltage
Lead Count
Lead Style
Maximum AC Volts
Maximum DC Volts
Mounting Type
Number of Circuits
Operating Temperature
SVHC Present
Storage Temperature
Tape & Reel
Temperature Coefficient of Clamping Voltage
Termination Style
Varistor Voltage
Varistor Voltage (Max)
Varistor Voltage (Min)
Varistor Voltage (Typ)

TMOV34S321M Description

Short technical summary and product information.

The TMOV34S321M is a thermally protected metal oxide varistor (MOV) from Littelfuse's TMOV34S series. It features a varistor voltage of 510V (typical at 1mA DC) and can handle peak pulse currents up to 40kA (8/20µs waveform). The device also offers an energy rating of 640J (2ms waveform) and a capacitance of 3800pF at 1MHz.

 

This varistor is designed for AC line protection and surge suppression in industrial and commercial applications. The integrated thermal protection element disconnects the varistor from the circuit in the event of overheating due to abnormal overvoltage or limited current conditions, enhancing safety.

 

The TMOV34S321M is housed in a square 34mm package with formed tabs and a 3-lead configuration for through-hole mounting. It operates over a temperature range of -55°C to 85°C and has an isolation voltage of 2500V. The device is RoHS compliant and lead-free available.

TMOV34S321M Quick Information

Product Type: Thermally Protected Varistor
Series: TMOV34S
Canonical Name: TMOV34S321M Varistor 510V 40kA Square 34mm Through Hole
Subcategory: Varistors, MOVs

TMOV34S321M Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected
Lead Free: Yes

TMOV34S321M Estimated Pricing

Qty Low High
180+ $13.27 $13.27

Estimated market price range - modelled values for guidance only, not live distributor offers.

TMOV34S321M Features

  • Thermally protected varistor design.
  • Rated for 510V varistor voltage.
  • Handles 40kA peak pulse current.
  • Square 34mm through-hole package.
  • RoHS compliant and lead-free.

TMOV34S321M Applications

  • Used in AC panel protection modules.
  • Ideal for surge protective devices.
  • Suitable for UPS and inverter circuits.
  • Applied in AC/DC power supplies.

TMOV34S321M FAQs

7 frequently asked questions generated from this part’s specifications.
What is the varistor voltage?

459V minimum, 510V typical, 561V maximum at 1mA DC.

What is the peak pulse current rating?

40kA (8/20µs waveform).

What is the package type?

Square 34mm, formed tabs, 3-lead, through-hole.

What is the energy rating?

640J (2ms waveform).

What is the capacitance?

3800 pF at 1 MHz.

What is the operating temperature range?

-55°C to 85°C.

Is the varistor thermally protected?

Yes, it includes an integrated thermal protection element.

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