3-Pin Center-OFF Rocker Switch 21mm x 12.92mm AC 240V Control +
This 3-Pin Center-OFF Rocker Switch is a specialized Single Pole Double Throw (SPDT) power component designed for three-stage circuit management. Featuring an "I-O-II" actuator, this switch allows you to toggle between two separate loads or completely disconnect power in the central "O" position, making it an essential part for bidirectional or dual-mode equipment.
Key Product Features
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Three-Position Versatility: The "I-O-II" center-off configuration enables the control of two independent circuits or functions, such as "High-Off-Low" or "Forward-Off-Reverse".
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Precision Snap-In Profile: Engineered with a standard 21mm x 12.92mm mounting footprint, ensuring a secure and seamless fit into rectangular panel cutouts.
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High-Voltage AC Rating: Built to safely handle AC 240V domestic and industrial power loads, providing reliable switching for heavy-duty appliances.
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Triple Terminal Interface: Equipped with three high-conductivity male spade pins for clear wiring of common, primary, and secondary lines.
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High-Contrast Markings: The matte black actuator features crisp white "I", "O", and "II" indicators for immediate operational status at a glance.
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Tactile Latching Action: Provides three distinct, firm clicks that lock into place, preventing accidental shifts between power modes.
Technical Specifications
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Switch Type: 3-Pin Rocker Switch (SPDT Center-OFF).
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Mounting Dimensions: 21mm (L) x 12.92mm (W).
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Electrical Rating: AC 240V.
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Terminal Type: 3-Pin Male Spade Lugs.
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Action: Latching (3-Position).
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Application: Ideal for fan speed controllers, heater settings, motor direction toggling, and multi-load power management.
Top 3 Customer Questions & Concerns
What is the difference between this and a standard 2-position switch? Functionality. A standard switch is either ON or OFF. This 3-pin switch adds a second "ON" stage, allowing you to choose between two different power paths (like two different speeds on a fan) while keeping the center position as a complete safety shut-off.
How do I wire this for two different devices? Connect your incoming "Hot" or "Live" wire to the center pin. Connect your first device to the top pin and your second device to the bottom pin. Flipping the switch to "I" powers the first device, "II" powers the second, and "O" turns both off.
Is this switch illuminated? No. This specific model is a non-illuminated mechanical switch. For status-light versions, we recommend looking at our ESR-5-2X series which features translucent lighted rockers in various colors.



