Product Description

11kV Dropout Fuse Cutout DOFC Switch for Electric Transformers
Our drop-out fuse cutout and load switching fuse cutout serve as high-voltage protective devices designed for outdoor use. Specifically engineered to connect with the incoming feeder of distribution transformers or lines, they offer robust protection against short circuits and overloads. The design features insulated supports and a fuse tube, with static contacts affixed to the insulator supports and a moving contact at the ends of the fuse tube. Constructed of an interior arc-extinguishing tube and an exterior phenolic or epoxy glass tube, our load switching fuse cutout includes enhanced elastic auxiliary contacts and an arc-extinguishing enclosure for efficient on-off loading current.
Under normal conditions, the fuse link maintains the fuse tube in a closed position. Should a fault occur, the fault current causes the fuse to melt, generating an electric arc. This heats the arc-extinguishing tube, producing high-pressure gas to suppress the arc. Once the fuse link melts, the moving contact loses tension, causing the mechanism to unlock and the fuse tube to fall, transitioning the cutout to an open position. For switching off during load, operators use an insulated bar to disengage the moving contact. An electrical arc forms between auxiliary contacts, which is then extended in the arc-extinguishing enclosure and extinguished by gas during zero current passage.
Complying with Standard: IEC 60282-2: High-voltage Fuses - Part 2: Expulsion Fuses
Technical Specification
Main Technical Parameters
Type |
Rated voltage (kv) |
Rated
current
(A) |
Breaking
current
(A) |
Impulse
voltage
(BIL) |
Powerfrequency withstand voltage |
Leakage distance
(MM) |
YNC4-12/100 |
11-15 |
300 |
8000 |
110 |
40 |
250 |
Main Product

Company Introduction
Founded in 2007 in China's Electric Capital, Yueqing City, Yuanneng Power is dedicated to serving power infrastructure needs across generation, transmission, and distribution systems. As a modern high-tech enterprise, we seamlessly integrate production, development, sales, and services. Our diverse product range includes polymer insulators, fuse cutouts, surge arresters, disconnect switches, and supporting power fittings.
To thrive in the global market and meet diverse regional standards like IEC, ANSI, IEEE, and GB, Yuanneng aligns its production with various international requirements. Our products are certified by prestigious institutions such as XIHARI, the National Insulator & Lightning Arrester Quality Supervision Inspection Center, and the State Grid Electric Power Science Academy Quality Inspection Test Center.
Leveraging the strategic accessibility of Ningbo and Shanghai Ports,
Yuanneng efficiently distributes products worldwide. Our current annual manufacturing capacity covers 500,000 polymer insulators, 500,000 lightning arresters, 350,000 dropout fuse cutouts, and 250,000 disconnect switches, underscoring our competitive edge and commitment to client support.
Yuanneng Power remains committed to the principles of 'Human-oriented, Credibility-based' development. We eagerly anticipate collaborating with you to harness the power of electricity and connect the world.






FAQ
Q: Are you manufacturer or a trade company?
We are a true professional manufacturer more than 15 years in China.
Q: Where is your factory?
Our factory address is Room 101, Building 2, No. 28, Binhainansan Road, Yueqing Economic Development Zone, Yueqing City, Wenzhou City, Zhejiang Province, China.
Q: Can I produce fuse cutouts according to my own requirements?
Surely, OEM & ODEM is welcome.
Q: May I get a fused cutout sample to check firstly?
Yes, the sample fee and courier fee need be paid by your esteem company, we will return cost back to you within your first order.
Q: How about sample time?
Normally, it can be ready in one week.
Q: What's your MOQ and delivery time?
For cutout, its MOQ should be 100pcs, delivery time is 25 days.
Q: Do you have type test report for ad drop out fuse cutout?
Yes, but consider test fee is very high, we make test on some models, welcome to contact to know details.
Q: What is your payment term?
Our payment term is T/T, L/C, if you have other idea, let us discuss.
Q: What is package for fuse cutout?
For porcelain and polymer fuse cutout, we will pack by carton+ pallet packing.
Q: What is standard of your cutouts?
IEC 60282-2, IEEE/ANSI C37.41, IEEE/ANSI C37.42