Permanent magnet solenoid WL 3031

holdingsingle-coil

Overview
Permanent electromagnets combine permanent magnet materials with an electrically controlled coil to provide a magnetic holding device that requires minimal power. Unlike conventional electromagnets that need continuous current, permanent electromagnets maintain holding force via built-in magnetic materials and only consume power during switching or release. This architecture improves energy efficiency while delivering stable, fast-response performance for automation, security locks, industrial control, robotics and battery-powered smart devices.

Key Benefits

• Energy efficient: consumes power only during state changes
• Strong holding force with stable performance
• Compact construction and fast switching response
• Long service life with reduced heat generation
• Fail-safe behaviour: holds position during power loss

Unit Features

• Rated voltages: DC 12V, 18V and 24V (DC 12V or 24V commonly offered)
• Wattage: 3–5 W
• Holding force: 130 N
• Smooth, flat contact surface
• Waterproof variants available on request
• Material: carbon steel housing (plating options: zinc or nickel)
• Lead wire length: 200 mm
• Work mode: Power on, Magnet off
• Resistance: 32 Ω
• Insulation class: B
• Hi-Pot Test: AC 600V 50/60Hz 2s
• Operating temperature: -10°C to 100°C
• Service life: 100,000 cycles (standard); WL3031 can exceed 1,000,000 cycles under proper application
• Mounting: screw hole installation; precision CNC machining; dimensional tolerance ±0.1 mm

Available Options / Customization

• Custom voltages
• Adjustable or custom holding force
• Custom coil resistance and copper winding options
• Custom mounting hole patterns and terminations
• Value-added packaging and treatments to reduce remanence; plating options (zinc, nickel)

Applications
Suitable for automation equipment (positioning, clamping, locking), security and access control (magnetic locks, latching mechanisms), robotics (gripping, toolholding), industrial machinery (valve control, fixtures, precision motion), medical devices (low power, quiet operation), transport systems (locking, positioning), and energy-sensitive or battery-powered smart devices where maintaining magnetic force without continuous power is required.

Product Datasheet
Brand: Weilong Technology
Model Number: WL 3031
Rated Voltage (V): DC 12V, 18V and 24V
Rated Power (W): 3–5 W
Work Mode: Power on, Magnet off
Holding Force (N): 130 N
Working duty: 10%
Resistance: 32 Ω
Service Life: 100 Thousand Times (standard)
Certification: CE, ROHS, ISO9001
Material: Superior magnet, carbon steel housing
Lead Wire Length (mm): 200 mm
Install Style: Screw hole
Tolerance of Dimension: ±0.1 mm
Water-proof: None (note: waterproof variants/options may be available)
Insulation Class: B
Hi-Pot Test: AC 600V 50/60Hz 2s
Non-excitation Holding Force: 0
Working Temperature: -10°C - 100°C
Duty Cycle: 1-100%
Thread Depth (mm): /
Payment Term: TT, or LC At Sight
Sample Order: Yes
Warranty: 1 Year
MOQ: 1000 pcs
Supply Ability: 5000 pcs per Week
Delivery Time: 30 Days
Port of Loading: Shenzhen

Technical specifications

• Brand: Weilong Technology
• Model: WL 3031
• Rated Voltage: DC 12V, 18V, 24V
• Rated Power: 3–5 W
• Work Mode: Power on, Magnet off
• Holding Force: 130 N
• Resistance: 32 Ω
• Working Duty: 10% (standard)
• Service Life: 100,000 cycles (standard); can exceed 1,000,000 cycles if applied within specifications
• Insulation Class: B
• Hi-Pot Test: AC 600V 50/60Hz 2s
• Non-excitation Holding Force: 0
• Operating Temperature Range: -10°C to 100°C
• Duty Cycle Range: 1–100%
• Lead Wire Length: 200 mm
• Material / Housing: Carbon steel housing (plating options: zinc or nickel)
• Mounting: Screw hole style; custom mounting available
• Tolerance of Dimension: ±0.1 mm
• Waterproof: None (standard) — waterproof versions may be available as option
• Certifications: CE, ROHS, ISO9001
• Sample Order: Accepted
• Warranty: 1 year
• MOQ: 1000 pcs
• Supply Ability: ~5000 pcs/week
• Delivery Time: Approx. 30 days