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APL210N Limit Switch Box
APL210N Limit Switch Box
Item Number: APL210N / HVM-2
- Body Material: Die Cast Aluminium alloy, polyester powder coating
- Connection: 2 X M20 Cable entries
- Shaft Material: Stainless Steel
- Limit switch Type: 2 X SPDT Mechanical
- Voltage/amps: 250VAC,125VAC, 250VDC/0.3A, 125VDC/0.6A, 30VDC/10A
- Temperature: -20℃-70℃
- Enclosure Rating: Weatherproof-IP67
- Mounting Bracket: Carbon Steel or Stainless Steel
- Optional: Proximity Sensors
- Colours: Various Colours
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Description
The APL-210N Aluminum Alloy Limit Switch Box: A Heavy-Duty Industry Standard Built for Maximum Mechanical Strength and Toughest Industrial Environments
Standard Specification
| Specification | |
| Model | APL210 Limit Switch Box |
| Enclosure | Weatherproof IP67/NEMA4&4X |
| Cable entries | Two NPT1/2″ |
| Ambient temperature | -20°C~80°C |
| Terminal strips | 8 points (0.05-2.5mm²) |
| Position indicator | 0~90° (90° turn free join) close:red open:yellow |
| Switches | Mechanical switch x2 proximity sensor x2 |
| Painting | Chromate Polyester powder coating(black) |
Heavy-Duty Material Engineering
- High-Impact Protection: The precision die-cast aluminum housing provides a rugged, metallic backbone that survives physical shocks and intense vibrations in demanding pipeline networks.
- Industrial-Grade Coating: Finished with a durable polyester powder coating, the exterior is engineered to resist abrasion and external wear, preventing degradation in grit-heavy environments.
- Superior Thermal Stability: The metallic enclosure ensures excellent heat dissipation, maintaining structural integrity and switch accuracy in high-temperature process conditions.
Operational Security & Precision
- Triple-Redundant Feedback: Designed for high-stakes industrial loops, providing an added layer of signal accuracy where operational failure is not an option.
- High-Visibility Monitoring: The prominent 3D dome indicator allows for clear, long-distance visual confirmation of valve status, enhancing safety for operators in large plant layouts.
- Instant Mechanical Feedback: The stainless steel NAMUR shaft connects directly to the drive, ensuring the control system receives precise position data with zero mechanical lag.
Reliability in Extreme Conditions
- Weatherproof Protection: Rated to IP67 and NEMA 4X, the unit is fully sealed against dust and water ingress, making it the standard for outdoor installations and refineries.
- Vibration-Resistant Internals: Built with a robust locking structure to ensure that switch settings remain secure even under constant industrial-scale mechanical stress.
- Field-Proven Longevity: Recognized as the reliable choice for oil, gas, and heavy-chemical sectors where equipment must withstand years of continuous exposure.
Maintenance & Compatibility
- Captive Hardware Design: Stainless steel cover bolts stay attached during maintenance, preventing the loss of critical hardware in remote or high-altitude field locations.
- Universal Mounting Standard: Fully compliant with VDI/VDE 3845 (NAMUR) and ISO 5211 requirements, ensuring a seamless fit onto any professional pneumatic actuator.
- Strategic Infrastructure Choice: The ideal selection for critical pipeline infrastructure where mechanical durability and industry-standard compliance are the top priorities.
Material of Parts
| Housing Cover & Body | Aluminum die casting | O-ring | NBR |
| Shaft | Stainless steel | Bushing | Bronze |
| Indicator cover | Polycarbonate | E-ring (Shaft) | Stainless steel |
| Cam | Polycarbonate | Earth Lug | Stainless steel |
| Spring | Stainless steel | Indicator | ABS/Polycarbonate |
| Housing cover bolt | Stainless steel | Bracket | Carbon Steel or Stainless Steel |



















