Your Professional Winch Solenoid Supplier!
Ningbo Liming Relay, located at No. 986 Zhongguan Road, Jiaochuan Street, Zhenhai District, Ningbo City, Zhejiang Province, was established in 1996. It covers an area of 13.7 mu and has over 200 frontline workers, 15 technical R&D personnel, 22 sales staff, and a 10-member e-commerce team. The company mainly engages in the design, development, and sales of relays, switch components, winch accessories, automotive modification parts, outdoor off-road, and rescue and recovery series products.
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Winch Solenoid 12V DCWINCH SOLENOID 12V DC is a core component of the electric winch control system, primarily used for controlling the forward rotation, reverse rotation, and stop functions of DC motors. The relay
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Winch Solenoid WaterproofThe 12V WINCH SOLENOID Waterproof is a high-current electromagnetic switching device specifically designed for electric winch control systems. It acts as an intermediary between low-power control
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Winch Solenoid Continuous DutyThis DC 12V relay is a crucial electrical component designed for automotive and industrial applications, serving as a bridge between control circuits and high-power loads.
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Winch Solenoid 500AWINCH SOLENOID 500A's housing is made of durable plastic, offering excellent heat resistance and corrosion resistance to withstand harsh outdoor conditions. The terminals are crafted from high -
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Marine Solenoid 500APlease note your winch model diagram/picture in the following section for further instruction. Also , please disconnect vehicle ground and positive leads from the battery before you begin.
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Winch Solenoid ATV/UTVWINCH SOLENOID ATV/UTV is a cutting - edge switching device designed for high - current DC circuits, offering robust performance and reliable control in demanding industrial and automotive
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Winch Solenoid Marine GradeThe LIMING 4180-2-12V relay is a compact, high - performance electromagnetic component designed for reliable electrical control in 12V DC applications. Its compact form factor and robust construction
Why Choose Us
Rich Experience
Founded in 1996, It covers an area of 13.7 mu and has over 200 frontline workers, 15 technical R&D personnel, 22 sales staff, and a 10-member e-commerce team.
Advanced Equipment
The company operates automated assembly and testing equipment, including relay automatic testers, laser marking machines, and automated assembly lines. These systems help ensure stable production processes and reliable product consistency.
Sales Market
Our products are exported to Europe, North America, Australia, Japan, South Korea, and other global markets. Years of cooperation with international customers have helped us understand the quality, documentation, and service expectations of overseas buyers.
Overview of Winch Solenoid
A winch solenoid is a heavy-duty electromagnetic switch or relay that controls high-current electrical flow from a battery to a winch motor, enabling safe, high-load operation without overheating switches. It acts as an intermediary, directing current to change motor direction (forward/reverse) for off-roading, towing, or marine applications.
Product Specification
We offers the following product specifications:
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Contact Arrangement |
2C(2PDT) |
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Contact Material |
Alloy |
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Contact Rating (resistive) |
250A 12VDC |
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Max. Switching Power |
30,000W. |
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Max. Switching Voltage |
75VDC @40A |
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Contact Resistance |
50m Ω Max |
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Operational Electrical |
Electrical |
20,000 cycles continuous at 50A 12VDC, 2,000 cycles intermittent at 250A 12VDC |
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Mechanical |
100,000 cycles. |
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Operation condition |
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Insulation Resistance |
100M Ω min (at 500VDC) |
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Dielectric Strength Between contacts Between contact and coil |
50Hz 1000VAC 50Hz 1000VAC |
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Shock resistance |
10G |
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Vibration resistance |
10~55Hz double amplitude 1.5mm |
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IP LEVEL |
IP67 |
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Ambient Temperature |
-40~55℃ |
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Relative Humidity |
93% (at 40℃) |
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Product features
Premium Construction: Made from sturdy steel with a black powder-coated finish, the winch solenoid relay or provides practical functionality and a lasting design. Its shatter- sealed housing ensures durability even in tough environments, while the design makes it easy to install and transport, whether you are on a job site or an outdoor adventure.
High Load Capacity: The winch solenoid relay is specifically designed to handle intermittent current loads of up to 250A for 10 seconds. This makes it highly for powering winches in the 2000-5000lbs range, ideal for heavy-duty tasks.
Universal Compatibility: This winch motor or is suitable for all 12V solenoid winches, including a wide range of vehicles such as UTVs, SUVs, and trailers. Its compatibility with various brands—like KFI, WARN, and RAMSEY—makes it a versatile choice for anyone needing a replacement or upgrade for their winch setup.
Weatherproof Design: The winch solenoid or relay features a weatherproof receiver, providing effective against rain and spills. While it’s not recommended for in water, its robust construction ensures stable performance in various weather conditions, making it a dependable component for outdoor applications and setups.
Extended Remote Control Range: Featuring a built-in antenna, the winch relay solenoid offers a remote control distance of approximately 164ft (50m). This allows operators to monitor winch or hoist s from a safe distance, enhancing convenience and safety during use.
Application
The marine industry represents one of the most demanding and widespread applications for winch solenoid switches. These components are integral to the operation of deck winches used for mooring vessels, lifting anchors, and handling cargo on commercial ships, fishing boats, and offshore platforms.
In the construction and mining industries, winch solenoid switches play a crucial role in powering heavy-duty winches used for lifting and moving massive loads, positioning excavation equipment, and stabilizing cranes and derricks. These environments subject solenoids to extreme mechanical stress, dust, debris, and temperature fluctuations.
The aerospace sector relies on winch solenoid switches for ground support operations, including aircraft maintenance platforms, boarding ramps, and cargo loading systems. These winches must operate with high precision and reliability due to the critical nature of aircraft handling.
Winch solenoid switches are widely used in telecommunications infrastructure for the installation and maintenance of overhead cables, fiber optics, and communication towers. During deployment, winches equipped with solenoids provide controlled tensioning and lifting of heavy cable spools and antenna arrays, particularly in remote or elevated locations.
The oil and gas industry employs winch solenoid switches in some of the most challenging and hazardous environments, including offshore rigs, drilling platforms, and pipeline maintenance operations. Solenoids control winches used for lifting heavy drilling equipment, deploying subsea tools, and transporting materials across remote sites.

Components
Coil of Wire
This is the heart of the solenoid. The coil is usually made of copper wire, wound tightly around a cylindrical core. When electrical current passes through the coil, it generates a magnetic field.
Iron Core
Also known as the armature, the iron core is located inside the coil. The magnetic field generated by the coil pulls the iron core towards it.
Plunger
The plunger is a movable part connected to the iron core. When the magnetic field pulls the iron core, the plunger moves as well, activating the winch mechanism.
Contacts
These are the electrical connection points within the solenoid. When the plunger moves, it closes the circuit by bringing the contacts together, allowing electrical current to flow to the winch motor.
Housing
A solenoid’s housing is typically made of durable materials like steel or plastic, protecting the internal components from dust, moisture, and physical damage.
Other Services
Wide Relay Custom Choices
AC/DC 24V-240V, Monitoring + Overcurrent/Undercurrent/Both, Specific monitoring function options and so on.
Reliable Supply
Laboratory validation; end-to-end QA; technical after-sales support from selection to assembly by technicians and business experts.
Mini Size
Each piece is 18mm wide and fits a 35mm DIN rail for easy installation or replacement.
High Efficiency
The lead time for direct warehouse transfers—including unique exterior light customization—is 10~15 days.
Certifications










Package & Delivery
Package: Standard export package or Custom.
Delivery: By air express, by sea.

FAQ
We're well-known as one of the leading winch solenoid manufacturers and suppliers in China, also support customized service. With a professional production team, we are able to meet the needs of the majority of our customers. Please rest assured to wholesale high quality winch solenoid in stock here from our factory.
directional relay, winch control solenoid, electrical relay