53D 70kA zinc oxide varistor

53D-K XXX
D53 diameter 53mm zinc oxide varistor, 70kA, blue epoxy resin. Soldering thermal cutoff member with 145 degree, the cutoff time is no less than 5 senconds under 1A current; the cutoff time is 3-5 seconds under 1.5A current.

–DC surge Protective device specially used for photovoltaic system less than1000

-The core parts are metal oxide vristor components with high discharge capacity.

-Withreliable control thanks to Thermo Dynamic Control disconnector.

-Without remote signaling contact for control device.

-Fault indication via red mark in the inspection window.

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Advantage

Stable & Reliable Surge Protection

Stable & Reliable Surge Protection

Adopts high-quality core components and precise circuit design, providing stable and consistent performance to effectively suppress lightning surges and transient overvoltage, ensuring long-term safe operation of equipment.
Wide Application Compatibility

Wide Application Compatibility

Covers AC, DC, photovoltaic, PoE network, and signal surge protection solutions, widely used in solar systems, LED lighting, industrial control, security monitoring, buildings and infrastructure.
Durable Structure & Easy Installation

Durable Structure & Easy Installation

Features rugged housing (including aluminum enclosure for outdoor models), DIN‑rail mounting, pluggable design and compact size for easy installation, wiring and maintenance in various working environments.
Certified Quality & Cost-Effective

Certified Quality & Cost-Effective

Most core products have passed TUV, CE and international safety certifications, with strict quality control. Stable performance and reasonable pricing bring high cost-performance for global projects.
1. Dia 53mm metal oxide varistor (MOV)

2. Blue insulated epoxy resin

3. High peak current: Imax 70kA

4. Thermal stability. Soldering thermal cutoff member with 145 degree, the cutoff time is no less than 5 senconds under 1A current; the cutoff time is 3-5 seconds under 1.5A current.
ITEM NO. 　 　 　 SPECIFICATION(25℃) 　
Continuous Voltage Energy Varistor Voltage(lmA DC) @Ip Clamping Voltage Typical Capacitance Peak Current (8/20μs)
VRMS VDC WTM(J)
VM(AC)(V) VM(DC)(V) (10/1000μs) Min(V) VN(DC)(V) Max(V) Vc(V) Ip(A) F=1KHz(pF) ITM(KA)
53D201 130 175 490 184 200 224 340 500 14000 70
53D241 150 200 570 216 240 259 395 500 11000 70
53D271 180 230 630 255 270 300 455 500 10000 70
53D331 210 270 670 297 330 363 550 500 8500 70
53D361 230 300 730 326 360 396 595 500 7700 70
53D391 250 330 880 354 390 429 650 500 7100 70
53D431 275 360 950 389 430 466 710 500 6600 70
53D471 300 390 1000 425 470 517 790 500 5900 70
53D511 320 420 1100 462 510 558 850 500 5700 70
53D561 360 470 1150 522 560 625 950 500 5000 70
53D621 390 505 1200 558 620 674 1025 500 4600 70
53D681 420 560 1500 612 680 736 1120 500 4400 70
53D751 460 615 1550 675 750 815 1240 500 3900 70
53D781 480 640 1600 702 780 858 1300 500 3800 70
53D821 510 675 1800 738 820 888 1350 500 3500 70
53D911 550 700 2000 819 910 933 1400 500 3300 70
53D951 580 735 2100 855 950 988 1500 500 3100 70
53D102 620 800 2200 900 1000 1080 1650 500 2900 70
53D112 680 860 2500 990 1100 1180 1800 500 2700 70
53D122 750 970 2600 1080 1200 1320 2000 500 2400 70
53D142 880 1150 3200 1260 1400 1520 2290 500 2100 70
53D162 1000 1200 3200 1440 1600 2700 2700 500 1800 70

Searching For A Reliable SPD & Surge Protector To Secure Your Projects?

MOQ is flexible and can be negotiated. Depending on your system solution, Accept Customization for Small Orders. Design products as your specification. Professional protection and stable performance for global projects. Submit an online message. Reply within 24 hours by email.

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  • Professional SPD & lightning surge protection solutions
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