The Universal Changeover Switch, also known as a cam switch, can switch between two power sources, two loads, or two circuits in either direction. PUGAO (Plannter Electric) offers ODM and OEM services for these products. You can contact us at any time to learn about the use of various electrical equipment, including voltage protectors and MCBs.
Key Features
1. Multi-Position Switching
The Universal Changeover Switch supports 2-position, 3-position, and multi-position switching, enabling the selection of various circuit states—such as Main Power / Off / Backup Power.
2. Multi-Circuit Control Capability
This type of changeover switch is capable of controlling multiple circuits simultaneously, accommodating complex electrical control requirements; it is commonly utilized in control cabinets and equipment panels.
3. High Versatility
Suitable for both single-phase and three-phase systems, it can be employed for either power switching or signal control, allowing a single device to fulfill a wide range of applications.
4. Compact Structure & Easy Installation
Our design features panel mounting as the standard option, with DIN rail mounting also available. This space-saving design facilitates seamless integration into control systems.
Core Application Scenarios
Universal changeover switches are widely used in industrial power distribution and control cabinets. PUGAO primarily supplies this product for the following applications:
1. Electrical Measurement and Monitoring
In power distribution cabinets, to minimize costs, it is common practice not to install a dedicated voltmeter for every individual phase.
This series of switches can be mounted on the distribution cabinet's instrument panel and paired with a single voltmeter. By rotating the universal changeover switch, users can sequentially measure the phase voltages of L1, L2, and L3, or measure the line voltage.
2. Low-Capacity Motor Control
These switches are suitable for use with small machine tools, miniature water pumps, and electric hoists—typically involving low-capacity motors rated at 5.5 kW or less. They enable direct control over motor start-up, shut-down, speed adjustment, and forward/reverse rotation.
3. Logic Switching for Complex Circuits
Within control cabinets, servo motor control systems, and Star-Delta starting circuits, the universal changeover switch functions as a signal transmitter to switch between control loops. Examples include switching from manual mode to automatic mode, or altering the operating parameters of a servo motor.
What Key Parameters Will We See Regarding Changeover Switch?
Rated operating current: The maximum current that a switch can continuously carry under specified conditions.
Rated insulation voltage: The maximum voltage that the switch insulation layer can withstand.
Rated impulse withstand voltage: The ability to withstand high-voltage surges.
Number of poles: 2, 3, or 4 poles, which determines the number of current paths that can be switched simultaneously.
Protection Degree (IP Code): The degree of protection against solid objects and liquids. Mechanical and Electrical Durability: The number of mechanical operations (no-load) and electrical operations (at rated current) that a switch is designed to withstand.
Installation and Wiring Precautions
First, pay attention to the installation location of the Universal Changeover Switch. Select a clean, dry, easily accessible location with ample space for operation and maintenance. This location must comply with local electrical regulations. To be able to handle the full rated current of the switch and the connected load, a cable with an appropriate cross-section must be selected. Tighten all terminal connections to the specified torque values, otherwise overheating may occur.
Universal Changeover Switch vs. Manual Changeover Switch vs. Automatic Changeover Switch
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Universal Changeover Switch
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Manual Changeover Switch
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Automatic Changeover Switch
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Primary Application
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Control / Multi-state Switching
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Power Switching
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Automatic Power Switching
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Operation Mode
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Manual Multi-position
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Manual
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Automatic
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Automatic Power Switching
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No
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No
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Yes
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Number of Settings
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Multi-position (I-0-II, etc.)
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Typically 2–3 levels
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Fixed-Logic Switching
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Functional Complexity
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High (Control + Switching)
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Medium
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High (with Monitoring)
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Cost
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Low–Medium
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Low
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Moderately High
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Manual Intervention Required
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Required
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Required
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Not Required
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