1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of the Baomain Master Switch Exterior Box, model LW28-63/4. This exterior box is designed to house universal rotary changeover cam switches, specifically compatible with SZW26-63 models, suitable for 660V, 63A, 3-position, 3-phase electrical applications. Please read this manual thoroughly before use and retain it for future reference.
2. Safety Information
WARNING: Electrical shock hazard. Installation and maintenance should only be performed by qualified personnel. Always disconnect power before working on the switch or enclosure.
- Ensure all local and national electrical codes are followed during installation.
- Verify that the power supply matches the specifications of the switch and enclosure.
- Use appropriate personal protective equipment (PPE) when handling electrical components.
- Do not operate the switch with damaged wiring or if the enclosure is compromised.
3. Product Overview
The Baomain Master Switch Exterior Box LW28-63/4 provides a protective housing for rotary cam switches. It is constructed from durable plastic and features pre-marked knockouts for cable entry. The design ensures compatibility with various cam switch configurations, offering a secure and organized installation environment.
3.1 Components
- Master Switch Exterior Box (LW28-63/4)
- Mounting Screws and Hardware
- Gaskets for sealing
3.2 Dimensions
Image Description: A grey exterior box with detailed measurements in inches and millimeters. The top surface measures 2.56" (65mm) by 2.56" (65mm). The height from the base to the top of the main body is 5.04" (128mm), and the total height including the top cover is 6.22" (158mm). The base measures 4.29" (109mm) by 4.29" (109mm). Two circular knockouts are visible on the side, with diameters of 0.91" (23mm) and 1.14" (29mm) respectively.
3.3 Compatible Switch Types
Image Description: This image illustrates the compatibility of the exterior box with various cam switches. The main panel shows a blue cam switch installed within the exterior box. Smaller inset images display examples of 2-phase, 3-phase, and 4-phase cam switches, indicating that this exterior box is suitable for 32A, 40A, and 63A cam switches with 2, 3, or 4 phases.
3.4 Included Accessories
Image Description: A view of the Baomain exterior box with its cover removed, displaying the various accessories included. These accessories consist of mounting screws, nuts, washers, metal brackets, and rubber grommets, all necessary for secure installation and sealing.
4. Specifications
| Feature | Specification |
|---|---|
| Model | LW28-63/4 (Exterior Box) |
| Compatible Switch Model | SZW26-63 Rotary Changeover Cam Switch |
| Current Rating (for compatible switch) | 63 Amps |
| Operating Voltage (for compatible switch) | 660 Volts |
| Number of Positions (for compatible switch) | 3 |
| Phase Compatibility | 3-Phase (also compatible with 2-phase and 4-phase switches) |
| Operation Mode | Manual |
| Mounting Type | Surface Mount |
| Material | Plastic |
| Color | Grey |
| Dimensions (L x W x H) | 4.4 x 4.4 x 6.2 inches (112 x 112 x 158 mm) |
| Item Weight | 0.01 ounces (approx. 0.28 grams) |
5. Setup and Installation
Proper installation is crucial for the safe and reliable operation of the switch and its enclosure. Ensure power is disconnected before beginning installation.
5.1 Installation Steps
- Prepare Mounting Surface: Select a suitable, stable, and flat surface for mounting the exterior box.
- Mark Mounting Points: Use the exterior box as a template to mark the four mounting screw locations.
- Drill Pilot Holes: Drill appropriate pilot holes for the mounting screws.
- Mount the Box: Secure the exterior box to the surface using the provided mounting screws and hardware. Ensure it is firmly attached.
- Install Cam Switch: Open the exterior box cover. Mount the compatible rotary cam switch (e.g., SZW26-63) inside the box, aligning it with the central opening and screw holes on the cover.
- Wire Connections: Carefully route electrical wires through the designated knockouts. Connect the wires to the cam switch terminals according to the switch's wiring diagram. Ensure all connections are secure and properly insulated.
- Seal Cable Entries: Use appropriate cable glands or grommets (some may be included) to seal the cable entry points, maintaining the enclosure's integrity.
- Close and Secure: Close the exterior box cover and secure it with the remaining screws, ensuring a tight seal.
5.2 Product Disassembly for Installation
Video Description: This video demonstrates the disassembly process of the Baomain Master Switch Exterior Box to facilitate the installation of a rotary cam switch. It shows how to separate the exterior box, install panel, marking plate, and twist grip, highlighting the various components and their assembly order. The video also illustrates the box's features, such as knockouts for wiring, and its application in power switching and control circuits.
6. Operating Instructions
The Baomain Master Switch Exterior Box houses a rotary cam switch. Operation is dependent on the specific cam switch installed. Typically, these switches feature a rotary knob with multiple positions (e.g., 0, 1, 2, 3) to control different circuit configurations.
- Position 0 (OFF): The switch is in the off position, disconnecting all circuits.
- Position 1, 2, 3 (ON/Changeover): Rotate the knob to the desired position to activate specific circuits or change over between power sources. Refer to the wiring diagram of your installed cam switch for exact functionality of each position.
Always ensure the switch is fully engaged in the desired position to prevent arcing or improper operation.
7. Maintenance
Regular maintenance helps ensure the longevity and safe operation of the exterior box and the housed switch.
- Periodic Inspection: Visually inspect the exterior box for any signs of damage, cracks, or loose components. Check for corrosion on external metal parts.
- Cleaning: Clean the exterior of the box with a soft, damp cloth. Do not use abrasive cleaners or solvents that could damage the plastic.
- Check Connections: Periodically, with power disconnected, open the enclosure and check all wire connections for tightness. Loose connections can lead to overheating or intermittent operation.
- Seal Integrity: Ensure all gaskets and cable entry seals are intact to prevent moisture and dust ingress. Replace if damaged.
8. Troubleshooting
If you encounter issues with the exterior box or the installed switch, consider the following common troubleshooting steps:
- Switch Not Operating:
- Verify that the power supply is active.
- Check all internal wiring connections for tightness and proper contact.
- Ensure the rotary knob is fully engaged in the desired position.
- Loose Cover/Poor Seal:
- Tighten all cover screws evenly.
- Inspect the gasket for damage or displacement and replace if necessary.
- Physical Damage to Box:
- If the box is cracked or severely damaged, it should be replaced to maintain safety and protection.
For complex electrical issues or if troubleshooting steps do not resolve the problem, consult a qualified electrician.
9. Warranty and Support
For warranty information, technical support, or replacement parts, please refer to the official Baomain website or contact their customer service directly. Keep your purchase receipt as proof of purchase.
Baomain Official Website: Visit the Baomain Store on Amazon
