The SZL9-20/D0723.3 has a rated current of 20A and features a three-section, three-position structure. One power input is split into two power outputs, allowing for switching between two devices. When the handle is rotated to position 1, the first set of ABC terminals is connected; when rotated to position 2, the second set of ABC terminals is connected; and in the middle position 0, all connections are open. It is suitable for AC 50Hz~60Hz electrical circuits with a rated operating voltage ≤440V and a rated insulation voltage of 690V. The product's design prioritizes space utilization and operational logic, making the switching process intuitive and clear. It is suitable for applications requiring multi-circuit power selection or operating mode switching. Its structure facilitates installation and maintenance, and can be used with various electrical systems, offering excellent applicability in control, distribution, and testing circuits. It is used in complete sets of electrical switchgear or for starting, speed control, and reversing of three-phase asynchronous motor loads, and as a main circuit and auxiliary circuit converter. It can also be used for converting the main and auxiliary circuits of industrial automation equipment. It can completely replace other transfer switches.
Mechanical life: 0.3 x 10⁶ cycles, operating frequency 120 cycles/hour.
Electrical life: 0.6 x 10⁶ cycles, operating frequency 120 cycles/hour.
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