XL-21 Power Distribution Cabinet

Product Overview

The XL-21 power distribution cabinet is suitable for use in power plants, industrial and mining enterprises for power distribution in three-phase four-wire or three-phase five-wire systems with AC voltages up to 500V. The XL-21 low voltage power distribution cabinet is an indoor unit designed for wall mounting and front-access maintenance. The enclosure is formed from bent steel plates and can be used for power source switching. Depending on user requirements, circuit breakers of different models and current ratings can be selected to meet diverse needs.

Product Features

The main electrical performance fully complies with the stipulations of IEC 60439-1:1992 and GB7251.1-1997.

The auxiliary circuit features switching functions for local/remote control and local/remote operation. Contactors can utilize DC holding.

The main incoming switch offers optional instantaneous trip or thermal-magnetic trip protection. To coordinate with downstream main switches, the instantaneous protection can be removed to avoid cascading trips. It also features self-switching, manual operation, and automatic transfer switching functions.

Main Applications

The XL-21 power distribution cabinet is suitable for use in industrial and mining enterprises such as textile, metallurgy, chemical, mining, and machinery industries. It serves as power and lighting distribution equipment in low-voltage power distribution systems with AC 50Hz, rated voltages of 380V or 660V, and rated currents up to 630A, applicable for three-phase three-wire, four-wire, or five-wire configurations. Additionally, it can be used for partial control functions in low-voltage control systems.