The SZL9-75/D1050.4 is a 75A specification switch, configured with a four-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 ABCN terminals is connected; when rotated to position 2, the second set of ABCN terminals is connected; and the middle position 0 disconnects all connections. Through position switching, multi-line status adjustment, and selection can be achieved. The product is commonly used in power distribution systems or control cabinets. Its overall structure is reasonable, the operation method is clear, and it meets the daily needs of electrical systems.
It is suitable for electrical circuits with AC 50Hz~60Hz, rated operating voltage ≤440V, and rated insulation voltage of 690V. It is used in complete sets of electrical switchgear or for starting, speed control, and reversing of three-phase asynchronous motor loads, and also for switching between main and auxiliary circuits. It can also be used for switching between 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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