Product Overview
Our two inlet twenty four outlet neutral box is an ultra‑high density, dual‑feed redundant power distribution component engineered for the world's most demanding large‑scale power distribution applications, including mega data centers, rail transit hubs, ultra‑high voltage (UHV) substations, and sprawling industrial campuses. It integrates two independent main incoming terminals (A/B dual feed, each L+N), a high‑capacity integrated neutral busbar (N‑bar), and twenty‑four independent outgoing branch terminals into a single compact, weatherproof enclosure. This two inlet twenty four outlet neutral box provides standardized, safe, and reliable A/B dual‑feed redundant power distribution to up to twenty‑four branch circuits, eliminating the need for multiple separate terminal blocks and neutral bars. The innovative modular multi‑layer busbar design with a heavy‑duty 400A main busbar and matching 400A N‑bar ensures balanced power distribution to all twenty‑four outlets. With an IP65‑rated enclosure and an ultra‑compact footprint that saves approximately 60% of panel space compared to traditional discrete components, it is the definitive solution for engineers and specifiers handling extreme‑scale dual‑feed redundant power systems where reliability, space efficiency, and ease of maintenance are paramount.
Key Features
1. Two independent main incoming terminals – supports A/B dual‑feed redundant power (utility + UPS, main + backup, or two utility feeds)
2. High‑capacity integrated neutral busbar (N‑bar) – factory‑integrated, matches main busbar rating (400A), eliminates separate N‑bar
3. Twenty‑four independent outgoing branch terminals – each branch (L+N) can be separately wired, disconnected, or protected
4. Ultra‑high density modular multi‑layer busbar – saves approximately 60% of panel space compared to 24 separate terminal blocks plus N‑bar
5. Heavy‑duty main busbar rated 400A (500A/600A optional) with optimized low‑temperature‑rise design
6. Integrated N‑bar rated 400A – ensures full neutral capacity for both feeds simultaneously, even under unbalanced loads
7. Each branch outlet rated 63A standard (80A/100A optional), covering most branch circuit requirements
8. Supports single‑phase and three‑phase configurations – flexible for different power systems
9. Ultra‑low contact resistance ≤0.35 mΩ on all terminals significantly reduces heat generation
10. High dielectric strength ≥2.5kV ensures safe operation under voltage stress
11. Transparent cover with laser‑etched wiring diagram – visual inspection and clear terminal identification even with 24 circuits
12. IP65 weatherproof enclosure – dust‑tight and protected against low‑pressure water jets; UV‑resistant
13. Wide operating temperature – -40℃ to +105℃, stable performance in extreme climates
14. Large wire range – main inlets accept up to 95mm² each; branch outlets accept 1.5‑16mm²
15. Self‑locking screw terminals – strong contact pressure, vibration‑resistant
16. Universal screw slots – compatible with both cross and straight screwdrivers for fast wiring
17. Standard DIN rail mounting – quick and secure installation
Technical Parameters
| Parameter | Value |
| Number of Inlets | 2 (dual feed A/B, each L+N) |
| Integrated Neutral Busbar | Yes (N‑bar, 400A) |
| Number of Outlets | 24 (independent branch outputs, each L+N) |
| Suitable System | Single phase (230V) dual‑feed |
| Rated Voltage | 230V AC |
| Main Busbar Total Rating | 400A copper standard (500A/600A optional) |
| Rating per Inlet | 200A (each) |
| N‑bar Current Rating | 400A (matches main busbar) |
| Each Outlet Current Rating | 63A standard (80A/100A optional) |
| Short‑time Withstand Current | 10kA / 1s |
| Contact Resistance | ≤0.35 mΩ (initial) |
| Dielectric Strength | ≥2.5kV / 1min |
| Torque Rating | ≥1.2 N·m |
| Main Inlet Wire Range (each) | 25mm² – 95mm² (copper) |
| Branch Outlet Wire Range | 1.5mm² – 16mm² (copper only) |
| Terminal Type | Cage clamp or tubular screw |
| Busbar Material | Tin‑plated copper (thickened, modular multi‑layer) |
| Housing Material | PC, V‑0 flame rating |
| Cover Material | Transparent polycarbonate, UV resistant |
| Protection Rating | IP65 |
| Operating Temperature | -40°C ~ +105°C |
| Mounting Method | DIN rail (35mm) or screw fixing |
| Space Saving vs. Discrete Components | Approximately 60% |
| Standards Compliance | IEC 60999-1, GB/T 14048.7, CE, RoHS, CCC |
Application Scenarios
- Mega data center dual‑feed power distribution – A/B utility + UPS feeds distributing redundant power to 24 server rows or PDU columns
- Rail transit hub / depot redundant power distribution – dual‑feed to 24 systems: signaling, communication, traction power, platform screen doors, HVAC, fire protection, security, lighting, and more
- UHV substation / converter station auxiliary power – dual‑feed distribution to 24 bays, protection panels, control circuits, and auxiliary loads
- Telecom central office / international gateway – dual‑feed to 24 equipment racks for transmission, switching, and data infrastructure
- Financial data center / trading floor – A/B power distribution to 24 trading servers, network switches, and cooling units
- Mega industrial campus – dual‑feed redundant power to 24 production lines, robot cells, and critical machinery
- Hospital critical power distribution – dual‑feed to 24 life‑support systems, operating rooms, and imaging equipment
- Airport terminal power distribution – redundant dual‑feed to 24 concourse zones, baggage handling, and security systems
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