XL Series Low Voltage AC Power Distribution Cabinet - Manufacturer Sourcing Guide
Specify, customize, and order a main AC distribution box or AC feeder distribution box direct from the factory
Choosing Between a Distribution Cabinet and a Distribution Box
Procurement teams sourcing power distribution equipment often see "cabinet" and "box" used loosely across supplier catalogs, which makes spec comparison difficult. As a rule of thumb: a floor-standing, multi-circuit unit built around a horizontal busbar - like the XL series - is what most engineers mean by a low voltage AC power distribution cabinet, while smaller wall-mounted units are typically the ones labeled "box."
When the XL series is configured as the primary incoming supply point of a switchroom, it's specified as a main AC distribution box; when it's configured downstream to split load across multiple circuits, it's specified as an AC feeder distribution box. Same busbar platform, different position in the single-line diagram.
Core Ratings at a Glance
| Parameter | Value |
|---|---|
| Rated working voltage | ~380V |
| Rated insulation voltage | ~660V |
| Operating voltage | ~380V/220V |
| Horizontal busbar rated current | 630A |
| Rated short-time withstand current | 15kA |
| Rated peak withstand current | 31.5kA |
| Protection rating | IP30 |
These ratings are what our sales engineers use to confirm whether a stock configuration fits your load profile, or whether a custom busbar/enclosure spec is needed - see the customization workflow below.
Model coding: XL-[Scheme No.]-[Rated Current]-[Design Sequence No.] - Power Distribution Cabinet
Inside the Factory: What Backs Every Cabinet
GangHeng Electric's production site in Jiangshan City, Zhejiang Province spans 5,000–20,000 m², positioned at the junction of Zhejiang, Fujian, Jiangxi, and Anhui provinces near the G3 Beijing–Taipei Expressway and Jiangshan Railway Station - a logistics advantage that shortens lead times for both domestic and export shipments.
On the shop floor, CNC punching, CNC bending, laser cutting, and copper busbar bending machines are run in-house rather than outsourced, which is what allows non-standard cabinet dimensions and busbar configurations to be produced at the same speed as standard orders. The company has manufactured switchgear and distribution equipment since 2004 and holds National High-Tech Enterprise status, with its distribution cabinets listed as a qualified product on the State Grid e-commerce procurement platform.
How a Custom Order Moves Through Engineering
Because every installation's load, layout, and fault-current profile differs, our engineering team reviews four documents before quoting:
1. Primary (single-line) wiring diagram
2. Secondary/control wiring diagram
3. A device schedule - model, spec, and quantity for each cabinet
4. External dimension constraints for the switchroom or site
From there, the cabinet can be built as a standalone main distribution unit, a multi-way feeder unit, or a matched lineup of both - sized to your busbar current and short-circuit rating rather than forced into a fixed catalog size. Single-unit orders are accepted alongside multi-cabinet lineups; there's no minimum order quantity, and production scales up to full container-load projects without a re-tooling delay.
Compliance and Where It's Been Deployed
Every XL cabinet is built to GB7251 as the baseline, with ANSI/IEEE or BS-compliant builds available for export projects where the destination market requires it. Distribution cabinets from this line have shipped to buyers in Iran, Kyrgyzstan, Zimbabwe, and Tanzania in addition to domestic utility and industrial customers - each shipment documented to match the receiving country's import and compliance requirements.
Support After Delivery
Cabinets ship new, with a 12-month free warranty from acceptance and an extended 5-year defect-liability window for latent faults beyond that. Field support is available around the clock, and replacement parts are stocked at or below standard market pricing - relevant for buyers weighing total cost of ownership, not just unit price, when comparing a low voltage AC power distribution cabinet against cheaper unbranded alternatives.
Request an Engineering Review
Send your single-line diagram and device schedule to our team for a specification match and quotation.
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