Category
Product Categories
Product Details
Model Meaning
X: Control Box
L: Power
21: Design Number
Product Overview
- The XL-21 low-voltage power distribution cabinet is suitable for use in power plants and industrial and mining enterprises as a power distribution device in three-phase four‑wire systems with AC voltages of 500V or less.
- The XL-21 low-voltage power distribution box is an indoor unit designed for wall-mounted installation with maintenance performed in front of the panel.
Structural Features
- The XL-21 low-voltage power distribution cabinet is enclosed, with a shell made by pressing steel plates. The operating handle for the knife switch is mounted on the upper part of the front right column and can be used to switch power sources. A voltmeter is installed on the front of the distribution box to indicate the busbar voltage.
- The distribution box is equipped with a door; once the door is opened, all internal components are fully exposed, making inspection and maintenance convenient. This distribution box utilizes newly designed domestic components that feature a compact structure, easy maintenance, and flexible wiring configuration options.
- In addition to being equipped with air circuit breakers and fuses for short-circuit protection, the distribution box also features contactors and thermal relays. The front door of the box can be fitted with operation buttons and indicator lights.
Technical Specifications
Knife-fuse combination switch
| Model | Rated Current (A) | Rated Current of Melt (A) |
| HR3-600/34 | 630 | 150, 200, 250, 300, 350, 400, 630 |
Air circuit breaker
| Model | Rated Current (A) | Rated Current of Melt (A) |
| JYM3-63/300 | 10–400 | 150, 200, 250, 300, 350, 400, 630 |
| JYM3-100/300 | 10–400 | 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| JYM3-250/300 | 10–400 | 100, 120, 140, 170, 200, 225, 250 |
| JYM3-400/300 | 10–400 | 250, 315, 350, 400 |
Current transformer
| Model | Primary Current (A) | Secondary Current (A) |
| LM-0.5 | 75, 100, 150, 200, 300, 600 | 5 |
Fuse
| Model | Fuse | Rated Current of Fuse (A) |
| RL1-15 | 15 | 2, 4, 5, 6, 10, 15 |
| RL1-60 | 60 | 20, 25, 30, 35, 40, 50, 60 |
| RL1-100 | 100 | 30, 40, 50, 60, 80, 100 |
| RL1-200 | 200 | 80, 100, 120, 150, 200 |
| RL1-400 | 400 | 150, 200, 250, 300, 350, 400 |
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Address:No. 2 Xinggu East Road, Xinggu Area A, Pinggu Park, Zhongguancun Science Park, Pinggu District, Beijing
Email: [email protected]
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