APL Series Limit Switch Box - Weatherproof Actuator Solutions from China Suppliers and Factory
| Model | APL-2N | APL-3N | APL-4N | APL-5N | ||||
|---|---|---|---|---|---|---|---|---|
| Standard | Option | Standard | Option | Standard | Option | Standard | Option | |
| Enclosure Explosion proof | IP67 | IP67 Eexd II BT6 | IP67 Eexd II CT6 | |||||
| Temperature Range | 25° C 〜 85 ° C | |||||||
| Conduit Entries | 2×1/2″NPT | PT 1/2″PF1/2 | 2×3/4″NPT | PT3/4TF3/4″ | 2×3/4″NPT | PT3/4″PF3/4 | 2×3/4″NPT | T3/4″PF3/4″ |
| Terminal Strips | 8 | - | 8 | 9-24 | 8 | 9-24 | 8 | 9-24 |
| Position Indicators | 0°~90 ° | 0°~180° | 0°~90° | 0°~180° | 0°~90° | 0°~180° | 0°~90° | 0°~180° |
| Closed: Red Open: Yellow | ||||||||
| Switches | Mechanical Switches (Option: Proximity Sensor) | |||||||
| Part | Material Details |
|---|---|
| Housing Cover & Body | Aluminium die-casting |
| Shaft | Stainless Steel |
| Indicator Cover | Polycarbonate |
| Indicator | ABS/Polycarbonate |
| Cam | Polycarbonate |
| Spring | Stainless Steel |
| Housing Cover Bolt | Stainless Steel |
| O-Ring | NBR |
| Bushing | Bronze |
| E-Ring (shaft) | Stainless Steel |
| Earth Lug | Stainless Steel |
| Bracket | Carbon Steel Powder coated |
What are the explosion-proof ratings for the APL series limit switch boxes?
The APL-2N and APL-3N models feature an IP67 rating. The APL-4N features an IP67 Eexd II BT6 rating, while the APL-5N offers the highest protection with an IP67 Eexd II CT6 rating.
What is the operating temperature range for these limit switch boxes?
All models in the APL series are designed to operate reliably within a temperature range of 25° C to 85° C.
What materials are used in the construction of the APL series?
The housing cover and body are made of high-quality Aluminium die-casting. Internal parts like the shaft, spring, cover bolts, and earth lugs are made of Stainless Steel, ensuring excellent durability and corrosion resistance.
What switch options are available for these models?
The default setup features Mechanical Switches. However, Proximity Sensors are available as an optional alternative depending on your application requirements.
How many terminal strips and conduit entries do these boxes have?
They typically feature 8 terminal strips (with options for 9-24). Conduit entries range from 2×1/2″NPT for APL-2N up to 2×3/4″NPT for the APL-3N, APL-4N, and APL-5N models, with various PT and PF thread options available.


