How to Select an AC Linear Solenoid
Choosing the right AC linear solenoid requires evaluating several key technical parameters to ensure reliable and efficient performance.
1. Define Force Requirements
The first step is to determine the required pull or push force.
Calculate load weight and friction
Add a safety margin (typically 20–50%)
Consider starting force vs holding force
👉 Tip: AC solenoids usually have high initial force, which decreases over stroke.
2. Determine Stroke Length
Define how far the plunger needs to move (mm)
Match solenoid stroke to your application
Avoid using full stroke unless necessary (reduces lifespan)
3. Select Voltage and Frequency
Choose correct AC voltage (e.g., 24V, 110V, 220V)
Match frequency (50Hz or 60Hz)
Ensure stable power supply
👉 Wrong voltage/frequency can cause overheating or poor performance.
4. Duty Cycle (Working Mode)
Continuous duty (100% ON)
Intermittent duty (e.g., 25%, 50%)
👉 Important to prevent overheating.
5. Response Time Requirement
Fast switching needed?
Check pull-in and release time
👉 AC solenoids are ideal for rapid, repetitive actions.
6. Installation Space & Mounting
Check size constraints (length, width, height)
Choose mounting type:
Frame type
Tubular type
Open frame
7. Operating Environment
Consider:
Temperature range
Humidity / dust conditions
Vibration or shock
👉 For harsh environments, choose sealed or protected designs (IP rated).
8. Noise and Vibration
AC solenoids may produce humming noise
Ensure shading coil design is included
👉 Important for medical or indoor equipment.
9. Lifespan & Reliability
Check expected cycle life
Choose high-quality materials (copper coil, iron core)
Consider maintenance requirements
10. Customization Requirements
If standard models don’t fit, consider:
Custom stroke length
Special voltage
Mounting brackets
Connector type
11. ✅ Quick Selection Formula (Engineering Reference)
Force requirement can be approximated as:
F ≥ Load + Friction + Safety Margin
12. ✅ Common Mistakes to Avoid
❌ Choosing based on size only
❌ Ignoring duty cycle → leads to burnout
❌ Using DC solenoid for AC application (or vice versa)
❌ Not considering heat dissipation
❌ Underestimating required force
13. ✅ Simple Selection Checklist
✔ Required force (N)
✔ Stroke length (mm)
✔ Voltage & frequency
✔ Duty cycle (%)
✔ Mounting size
✔ Environment conditions
✔ Noise requirement














