The **ZLEC04A2B-R** is a specific part number belonging to the **ZLEC series** of limit switches, manufactured by Honeywell. These components are part of the Global Limit Switch family, designed for industrial automation and machinery control. --- ### ## Technical Specifications The following table outlines the primary electrical and mechanical characteristics of the ZLEC04A2B-R: | Feature | Specification | | :--- | :--- | | **Switch Type** | Medium Duty Limit Switch | | **Contact Configuration** | 2NC/2NO (Double Pole, Double Throw - DPDT) | | **Actuator Style** | Side Rotary (Adjustable Roller Lever) | | **Housing Material** | Plastic (Double Insulated) | | **Termination** | 0.5 in - 14NPT Conduit | | **Operating Force** | 0.12 N-m [1.06 in-lb] max. | | **Environmental Rating** | IP66 (Dust-tight, Water-jet proof) | --- ### ### Key Electronic & Mechanical Components 1. **Contact Block (2NC/2NO):** The "04" in the part number indicates the contact arrangement. It features a snap-action mechanism that ensures a rapid transition between states, reducing arcing and increasing the life of the contacts. 2. **Adjustable Roller Lever:** The "A2B" designation refers to the actuator. It is a side-rotary lever with a plastic roller. The lever arm length is typically adjustable, allowing for fine-tuning based on the mechanical interface of the machine. 3. **Galvanic Isolation:** As a double-insulated switch, it does not require an internal ground screw. This provides a high level of electrical safety in environments where earthing might be complex. 4. **Bifurcated Contacts:** Honeywell ZL series often utilize silver contacts, which are ideal for switching standard power loads (up to 10A at 250VAC), providing reliable conductivity over thousands of cycles. --- ### ### Typical Applications * **Conveyor Belts:** Detecting the presence or position of packages. * **Packaging Machinery:** Monitoring door interlocks or arm positions. * **Material Handling:** Sensing the limit of travel for lifts or hoists. * **Textile Machinery:** Managing high-speed mechanical transitions. ---