China APL Series Limit Switch Box - Compact Weatherproof Design, Adjustable Position Switches, Suppliers & Factory
Specifications
| 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:Prpximity Sensor) | |||||||
Materials
| Component | Material Specification |
|---|---|
| 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 |
Frequently Asked Questions (FAQ)
What are the explosion-proof ratings for the different APL models?
The APL-2N and APL-3N models feature a standard IP67 weatherproof enclosure. The APL-4N features an IP67 Eexd II BT6 explosion-proof rating, and the APL-5N provides 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 for the main body and internal components?
The housing cover and body are made of heavy-duty die-cast aluminium. Key internal parts like the shaft, spring, cover bolts, and earth lug are constructed from stainless steel, while the indicator cover and cams are made of durable polycarbonate.
What switch types and position indicators are available?
The standard setup includes mechanical switches, with proximity sensors available as an option. The visual position indicators support a 0°~90° angle (standard) or 0°~180° (optional), color-coded with Red for Closed and Yellow for Open.
How many terminal strips are included in the APL limit switch boxes?
All APL models come standard with 8 terminal strips. For APL-3N, APL-4N, and APL-5N models, optional configurations are available offering between 9 to 24 terminal strips.


