Dongguan Julun electronics co.,ltd

Main business: the circuit protection device, current fuse, temperature fuse series, fuse holder series, automatic recovery fuse, fuse resistor, varistor, thermistor, high-voltage fuse and peripheral products.

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SMOV25S Series SMOV25S Varistor Overvoltage Circuit Protection Thermal Protection

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SMOV25S Series SMOV25S Varistor Overvoltage Circuit Protection Thermal Protection

SMOV25S Series SMOV25S Varistor Overvoltage Circuit Protection Thermal Protection
SMOV25S Series SMOV25S Varistor Overvoltage Circuit Protection Thermal Protection

Large Image :  SMOV25S Series SMOV25S Varistor Overvoltage Circuit Protection Thermal Protection Get Best Price

Product Details:
Place of Origin: CHINA
Brand Name: Julun
Certification: CE/UL/VDE/KC/ROHS
Model Number: SMOV25S
Payment & Shipping Terms:
Minimum Order Quantity: 100 / Negotiable
Price: Negotiable
Packaging Details: Standard carton
Delivery Time: 7~10 Working days
Payment Terms: L/C, D/P, T/T, MoneyGram
Supply Ability: 10000/Piece/Weekly
Detailed Product Description
Model Number: SMOV25S Type: Fixed Resistor
Dimension: 25mm Highest Rated AC Voltage: 115 ~ 460
Maximum Pulse Energy: 150 ~ 615
High Light:

mov electrical component


thermally protected mov

SMOV25S Series Overvoltage Circuit Protection Thermal Protection SMOV25S Varistor


SMOV®25S thermally protected varistor is a self-protected device. It consists of a 25mm square varistor with an integral thermal disconnect designed to open in the event of overheating due to abnormal overvoltage as outlined in UL1449. The SMOV® helps facilitate SPD module compliance to UL1449 and offers quick thermal response due to the close proximity of the integrated thermal element to the MOV body. This configuration also offers lower inductance than most discreet solutions resulting in improved clamping performance to fast over voltage transients.


The device has a separate micro-switch, which can be used to indicate that the MOV has been disconnected from the circuit. This separate switch makes the monitoring circuitry completely isolated from the main power which ensures indicator circuit safety and simplifies the customers circuit design.




• Maximum single surge capability 20 kA, 8/20 waveshape.

• Nominal Discharge Current Value: 10kA.

• Intermediate current rating: 50A/150A.

• -45°C to +75°C operating temperature.

• Recognized to UL 1449.

• Lead-Free and RoHS compliant.

• Integrated micro-switch for indication circuitry/design.




• SPD applications

• AC/DC distribution

• IT/Data center

• Power supplier

• Telecommunication



Device Ratings and Specifications


Maximum Rating (75°C) Specifications (25 °C)
Continuous Transient Varistor
Voltage at
1mA Test
Capacitance AC f = 1MHz
Peak Surge
Current (In)
1 × Pulse
Vc I
(V) (V) (J) (A) (A) / (V) (V) (A) (pF)
115 150 170 20000 10000 162 198 295 100 3200
SMOV25S131MP SMOV25S131NP 130 170 190 20000 10000 184.5 225.5 335 100 2800
SMOV25S151MP SMOV25S151NP 150 200 220 20000 10000 216 264 390 100 2300
SMOV25S181MP SMOV25S181NP 175 225 250 20000 10000 243 297 450 100 1900
SMOV25S251MP SMOV25S251NP 250 320 330 20000 10000 351 429 640 100 1400
SMOV25S271MP SMOV25S271NP 275 350 350 20000 10000 387 473 700 100 1250
SMOV25S301MP SMOV25S301NP 300 385 370 20000 10000 423 517 765 100 1150
SMOV25S321MP SMOV25S321NP 320 420 390 20000 10000 459 561 825 100 1080
SMOV25S421MP SMOV25S421NP 420 560 460 20000 10000 612 748 1100 100 820
SMOV25S461MP SMOV25S461NP 460 615 490 20000 10000 675 825 1220 100 750
SMOV25S511MP SMOV25S511NP 510 670 520 20000 10000 738 902 1335 100 680
SMOV25S551MP SMOV25S551NP 550 745 550 20000 10000 819 1001 1475 100 630
SMOV25S621MP SMOV25S621NP 620 800 600 20000 10000 900 1100 1625 100 550
SMOV25S751MP SMOV25S751NP 750 970 670 20000 10000 1080 1320 1950 100 460


Average power dissipation of transients should not exceed 1.5 watts Same ratings and specifications apply to Non Isolated Monitored Switch alternative design. Replace "M" with "N" in the part number. e.g.: SMOV25S111NP. Refer to Part Number System at the end of this document.




SMOV25S Series SMOV25S Varistor Overvoltage Circuit Protection Thermal Protection 0





1.Are you a factory or trading company?
We are a factory founded in 2009 and have over 9 years’ OEM and international trading experience

2.What’s your main product?
Our main products are fuse series, resistance series, capacitance series, fuse pedestal series, sensor series

3.Any certification of your company or product?
We have ISO 9001-2008 ,CE(LVD), RoHS, TUV,cURus,VDE,CQC,PSE,KC Certificates and Test Report for these certificate.

4.Which countries have your product been exported to ?
We have exported our product to over 20 countries , such as Russia , India ,Thailand, Indonesia, Malaysia, Tunisia, Brazil ,Iran, U.A.E ,Mexico, Colombia, Venezuela , Argentina etc.

5.Which international exhibition do you usually go to?
China Import and Export Fair (Canton Fair) ELEKTRO , Russia / FIEE ELéTRICA ,Brazil.

6.Can I visit your factory?
We have over 5000 square meters of workspace and sincerely welcome your business visit.

7.Do you accept OEM or ODM?
Of course.

8.How’ your production capacity? How long is the lead time ?
Monthly output 50,000 piece . It usually take us 20-30 days to finish the goods.

9.What’s your main payment term?
T/T ,LC ,D/P.

10.Any quality guarantee or after-sales service?
If any quality complaint , we will give out solution within 5 days.

11.Can sample fee be returned back to me ?
Sample amount can be deducted from your bulk order payment when order quantity is over 1000 pieces at the first time.

12.How many days it takes to finish the samples?
Usually 2-5 work days .

Please tell me:
What product specifications do you need? when you ask for a quotation.I will give you the most competitive price per as your requirements. And we have many types for you to choose.

P.S.:If you can't find any products to meet your requirements. welcome to send us the details drawings so that we can provide us our professional & best service to you.

Contact Details
dongguan Julun electronics co.,ltd

Contact Person: Mag

Tel: 86-15820816806

Send your inquiry directly to us