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XL-21
Conforms to standard: GB7251.12
Insulation voltage: 660V
Operating voltage: 380V
Operating current: 600A, 400A – 10A
Degree of protection: IP30
This product features a compact structure, convenient maintenance, and flexible combination of circuit schemes.
In addition to air circuit breakers and fuse disconnectors for short-circuit protection, the distribution cabinet is also equipped with contactors and thermal relays. Operation buttons and indicator lights can be installed on the cabinet door.
The knife switch operating handle is located at the upper right pillar of the cabinet and can be used for switching power supplies.
The distribution cabinet has a front-opening door. When the door is opened, all internal equipment is exposed, facilitating inspection and maintenance.
| Model | Rated Current (A) | Rated Fuse Current (A) | Remarks |
| HR3-400/34 | 400 | 150, 200, 250, 300, 350, 400 | No fuse when equipped with isolating blade |
Air Circuit Breaker
| Model | Rated Current (A) | Trip Unit Setting Current (A) | Remarks |
| MLM5-40/390 | 20 | 7, 10, 15, 20, 30, 40 | |
| MLM1-100/300 | 100 | 15, 20, 25, 30, 40, 50, 60, 80, 100 | |
| MLM1-250/300 | 250 | 100, 120, 140, 170, 200, 225, 250 |
Current Transformer
| Model | Primary Current (A) | Secondary Current (A) | Remarks |
| LM-0.5 | 75, 100, 150, 200, 300, 600 | 5 |
Fuse
| Model | Fuse | Rated Fuse Link Current (A) | Remarks |
| 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 |
