The JEL (F) -21 power distribution cabinet is suitable for power plants and industrial and mining enterprises, and is used for power lighting distribution in three-phase three wire, three-phase four wire, and three-phase five wire systems with AC voltage of 500V or below.

The JEL (F) -21 power distribution cabinet is an indoor device, installed against the wall and maintained in front of the screen.

The JEL (F) -21 low-voltage power distribution cabinet is an indoor wall mounted, single-sided front opening power distribution device. Its basic structure is made by bending steel plates and welding angle steel. A knife switch operating handle can be installed on the front right side for power cut-off and connection operations. Operation buttons, indicator lights, and display instruments can be installed on the box door. After opening the box, all internal equipment of the distribution box is exposed for easy maintenance and repair. This distribution box is equipped with air circuit breakers, fuses as short-circuit protection, as well as contactors and thermal relays. Both the door and the shell are welded with grounding screws to ensure reliable connection between the shell and the ground.