Use XL-21 low-voltage power distribution box is suitable for power distribution of three-phase four-wire or three-phase five-wire system with AC voltage of 500V and below in power plants and industrial and mining enterprises. XL-21 type low-voltage power distribution box is installed against the wall, and the screen is repaired before the installation.
Model significance
Structural characteristics XL-21 low voltage power distribution box is closed, the shell is made of steel plate bending, the knife switch operation handle is on the upper right column in front of the box, which can be used as a power switch. A voltmeter is installed in front of the distribution box to indicate the voltage of the bus. There is a door in front of the distribution box. After the door is opened, all the equipment in the distribution box is open for easy maintenance. The distribution box adopts domestic self-designed components, with compact structure, easy maintenance, line scheme can be flexibly combined and so on. In addition to air circuit breakers and fuses for short circuit protection, the distribution box is also equipped with contactors and thermal relays, and the front door of the box can be equipped with operation buttons and indicators.
Installation dimensions 4.1 The shape and installation dimensions of the A-type structure of the power distribution box are shown in Figure 1. 4.2 The shape and installation dimensions of the B-type structure of the power distribution box are shown in Figure 2.
