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China APL Series Limit Switch Box - Compact Weatherproof Design, Adjustable Position Switches, Suppliers & Factory
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China APL Series Limit Switch Box - Compact Weatherproof Design, Adjustable Position Switches, Suppliers & Factory

The APL Series Limit Switch Box is a compact and weatherproof enclosure designed for durability and reliability. This product features internal adjustable position switches and an external visual indication, making it an excellent choice for various applications. With NAMUR standard mounting and drive, the APL Series is ideally suited for installation on quarter turn actuators and valves in industrial settings, **Key Features of the APL Series Limit Switches:**, • Robust and compact design with a solid aluminum die-cast housing, finished with a weather-resistant polyester powder coating for increased longevity, • Easy-to-read bolt-on visual position indicator that enhances operational visibility, • Innovative Quick-Set spring-loaded splined cam allows for initial setting without the need for tools and ensures that you won’t need to readjust later, • Dual cable entries facilitate flexible installation options, • Captive cover bolts are included to prevent loss when the cover is removed, promoting easier maintenance, • The assembly includes a NAMUR standard stainless steel shaft and bracket, ensuring compatibility and durability, As a leading factory and supplier in China, we pride ourselves on providing high-quality limit switch boxes designed to meet industrial standards. Enhance your automated systems with the APL Series Limit Switch Box for reliable performance and superior visibility

    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.