Holding solenoid WL1037

lockingself-holdingminiature

Product Overview
The WL1037 latching DC solenoid is a bistable push-pull actuator designed for locking and holding applications where continuous power is undesirable. It latches mechanically with permanent magnets and requires short DC pulses only to change state, making it suitable for battery-powered and energy-efficient systems.

Main Characteristics

• Bistable two-position operation: retains position without continuous current.
• Pulse-actuated: switching with millisecond pulses; energy-efficient holding.
• Available in single-coil (requires polarity reversal) or dual-coil drive options.
• Compact design with high force-to-size ratio.
• Selectable enclosure: open, tubular (moisture resistant) or fully enclosed (IP65/IP67 available).

Product Details

• Brand: Weilong Technology
• Model: WL1037
• Rated Voltage: DC 24.0 V (other voltages: 3V, 5V, 12V, 48V)
• Rated Power: 12.3 W
• Work Model: Push-Pull Type
• Holding Force: 2.6 N (typical)
• Stroke: 10 mm (customizable 2–15 mm)
• Reset Time: 0.2 s
• Service Life: ~500,000 cycles
• Insulation Class: B; Hi-Pot: AC 600V 2s
• Lead Wire Length: 200 mm; Install Style: Screw
• Operating Temp.: -10°C to 100°C
• Duty Cycle: model-dependent (pulse/intermittent operation recommended)
• Certifications: CE, RoHS, ISO9001
• MOQ: 1000 pcs; Supply: 5000 pcs/week; Delivery: ~30 days from Shenzhen

Mechanism
The device uses permanent magnets to latch the plunger in either extended or retracted position. A short polarity-controlled DC pulse (or opposite coil activation) overcomes the magnetic latching to move the plunger; when the pulse ends the permanent magnet flux holds the plunger without current.

Advantages

• Very low power for holding states—ideal for battery-powered equipment.
• No continuous heat generation when latched, improving reliability.
• Retains last commanded state on power loss (fail-last).
• Compact and high force-to-size ratio for space-constrained assemblies.

Limitations

• Requires polarity-reversal drive (single-coil with H-bridge) or dual-coil driver.
• No intrinsic fail-safe return—additional mechanics needed for fail-safe behavior.
• Pulse timing critical: insufficient pulse may not latch; excessive pulse may overheat coil.
• Higher cost than basic solenoids due to magnets and precision assembly.

Applications

• Electronic locks, cabinet and access control systems.
• Battery-operated devices: meters, portable instruments, remote controls.
• Vending machines, ticketing, automated dispensers.
• Industrial automation: dampers, diverters, pilot valves where continuous power is impractical.
• Automotive contacts and latching mechanisms requiring low hold current.

Troubleshooting Summary

• Electrical checks: verify input voltage, pulse amplitude/duration and polarity; check coil continuity and insulation resistance.
• Mechanical checks: clean plunger bore, inspect alignment and air gap, verify spring condition.
• Latching faults: weak or missing set/reset pulse, demagnetized magnets, plunger binding—correct drive signals, clean/align or replace parts as needed.

Technical Specifications (key values)

• Brand: Weilong Technology
• Model: WL1037
• Rated Voltage: DC 24.0 V (other voltages available)
• Rated Power: 12.3 W
• Work Model: Push-Pull Type
• Holding Force: 2.6 N
• Stroke: 10 mm (customizable)
• Reset Time: 0.2 s
• Service Life: 500,000 cycles
• Certifications: CE, RoHS, ISO9001
• Lead Wire Length: 200 mm; Install Style: Screw; Tolerance: ±0.1 mm
• Ingress Protection: none by default (tubular/enclosed variants for IP ratings)
• Operating Temp: -10°C to 100°C; Insulation Class: B; Hi-Pot: AC 600V 2s
• MOQ: 1000 pcs; Supply Ability: 5000 pcs/week; Delivery Time: ~30 days; Port: Shenzhen