Product Name: E-TEN1221 4-Pin Toggle Switch (Screw Terminal Type)
Appearance and Structural Features:
Overall Structure: This is a compact metal frame toggle switch. The main body features a rectangular insulating housing, surrounded by a sturdy metal bracket. The top is equipped with a threaded bushing, a metal toggle lever, and a fixing nut.
Materials and Manufacturing:
Housing: Made of high-temperature resistant insulating plastic (such as bakelite or nylon), combined with a galvanized or nickel-plated metal frame, ensuring both electrical insulation safety and enhanced mechanical strength.
Toggle Lever: Solid metal cylindrical lever with a clear operating feel and high durability.
Functional Design (Key Features):
4-Pin Screw Terminals: There are 4 terminal blocks at the bottom, each with screw holes and wire-pressing clips (Screw Feet). This design allows users to directly secure wires with screws without welding, greatly facilitating on-site installation and later maintenance and replacement.
Circuit Logic: This 4-pin design typically corresponds to a Double-Pole Single-Throw (DPST) circuit structure. This means it has two independent sets of contacts inside, enabling simultaneous control of two circuits (e.g., cutting off both live and neutral wires). Based on the "ON-OFF" markings on the picture, it supports simple on and off functionality.
Mounting Method: Uses standard M12x0.75 threaded bushing mounting, along with the included nut and washer, for secure installation on equipment panels.
Status Indication: A red and white "ON/OFF" label is attached to the panel, clearly indicating the switch's on/off position. The model and parameters are printed on the side.
Dimension Specifications (Based on Drawing Markings):
Total Height: Approximately 45.5mm (including lever: lever height 17.5mm + bushing height 9.5mm + body height 19mm).
Body Dimensions: Length 32.2mm × Width 19.8mm × Height 19mm.
Mounting Hole Diameter: Standard 12mm (thread specification M12x0.75).
Terminal Spacing: The terminals at the bottom are closely arranged, with a spacing of approximately 6.3mm (center-to-center).
Electrical Characteristics:
Rated Current/Voltage: 15A / 250V AC. This indicates it is a high-current rated switch, capable of handling high loads and suitable for high-power electrical equipment.
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E-TEN1221 4-pin toggle switch 1221 rocker switch, 12MM push-button switch, four-pin two-position current-boosting screw terminal Images
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