XL‑21 Indoor Low‑Voltage Power Distribution Cabinet

XL‑21 power cabinet is a widely‑adopted enclosed indoor low‑voltage distribution device, specially designed for terminal power distribution, motor control and circuit‑protection within power‑supply systems.
With highly‑modular construction, this cabinet delivers solid basic protection and strong environmental adaptability. It provides centralized power supply and management for electric motors, power machinery and lighting‑load systems. Its compact footprint, safe performance and simple maintenance make it fit for diverse installation environments and variable electrical‑load demands.
Suitable for AC 400V three‑phase four‑wire indoor distribution network. Front‑opening door enables full visibility of internal components for easy inspection and troubleshooting.

‑ Ambient temperature: -25℃ ~ 40℃, customized version for extreme‑high/low temperature available
‑ Relative humidity: ≤ 95% ( 20℃)
‑ Installation altitude: ≤ 1000 m, special customization for altitude > 1000 m
‑ Indoor installation, no severe vibration, explosive gas or heavy corrosive atmosphere on‑site

1. Flexible bolt‑assembly cabinet structure The enclosure is manufactured from cold‑rolled steel plate or stainless‑steel sheet. Bolt‑on assembly allows fast disassembly. Door and side‑panels are detachable for convenient internal inspection and component adjustment. Installation back‑plate height can be adjusted freely to accommodate different‑size electrical parts, with optimized ventilation layout for heat dissipation.
2. Multiple protection‑grade & surface‑treatment choices Standard protection grade IP30 blocks solid particles larger than 2.5 mm. Stainless‑steel outdoor‑modified version can reach IP40 rating, improving dust‑proof and rain‑resistant capability. Surface galvanization or electrostatic powder‑coating treatment enhances cabinet anti‑rust property for stable long‑term running.
3. Rich expandable‑function integration Flexible busbar‑free framework supports wide‑range working‑current (4A‑630A). Optional modules: dual‑power automatic switching, soft starter, power‑factor compensation unit. Every cabinet is pre‑equipped with dual safety protection, short‑circuit protection by air‑circuit‑breaker or fuse, overload protection by thermal relay.
4. Human‑friendly operation layout Voltage indicator, operation push‑buttons and indicator‑lamps are mounted on the front door. All internal components become accessible once the cabinet door opens, making routine maintenance and circuit modification highly convenient.