XL-21 Low-Voltage Power Distribution Panel Parameters:
- Product Series: YBCMC
- Product Brand: Yue Biao
- Rated Operating Voltage Ue: 380 V
- Rated Insulation Voltage Ui: 660 V
- Rated Frequency: 50 Hz
- Main Busbar Rated Current Ie: 10 A – 630 A
- Rated Short-Time Withstand Current Icw: 10 kA / 1 s
- Enclosure Protection Rating: IP30 (Indoor Type)
- Installation Method: Wall-mounted, front-access maintenance
- Standards & Certifications: IEC 60439-1:1992, GB 7251.1-1997

Product Application
XL-21 wall-mounted low-voltage power distribution panel delivers 380 V-660 V at up to 630 A with 10 kA/1 s withstand and IP30 indoor rating.
The integrally-bent steel enclosure offers front-panel maintenance and a factory busway flange for direct 630 A plug-in, cutting install time by 30 %.
Remote/local selector, DC hold coil and optional earth-leakage, phase-loss or undervoltage release keep motors and lighting safe.
From urban substations and mining plants to shopping malls and wind towers, its compact depth (≈0.2 m²) slips through narrow doors, provides rapid cable entry and needs no rear clearance—an ideal feeder pillar for space-critical LV networks.











