MNS Low-voltage withdrawable switchgear
The MNS Low-Voltage Withdrawable Switchgear is a modern, modular, and highly flexible power distribution solution designed for low-voltage electrical systems. Its drawable (withdrawable) design allows individual functional units to be removed or replaced without powering down the entire system, greatly improving maintenance efficiency and operational continuity.
This switchgear is widely used in:
Industrial power distribution
Commercial buildings
Infrastructure projects
Power plants and substations
| Parameter | Value |
|---|---|
| Rated insulation voltage | 660 V |
| Rated operating voltage | 380 V / 660 V |
| Main busbar – Max. operating current (IP00) | 5500 A |
| Main busbar – Max. operating current (IP30) | 4700 A |
| Main busbar – Short-time withstand current (eff. value) | 100 kA |
| Main busbar – Short-time peak current (max. value) | 250 kA |
| Vertical busbar (Power distribution busbar) – Max. operating current | 1000 A |
| Vertical busbar – Short-time peak current | 90 kA / 130 kA |
| Protection degree | IP30, IP40, IP54 |
The MNS switchgear meets the standards of IEC 529 and DIN 40050.
| Protection Rating | Description |
|---|---|
| IP30 | Protection against solid objects > 2.5 mm (e.g., tools, wires) |
| IP40 | Protection against solid objects > 1.0 mm (e.g., fine tools, small wires) |
| IP54 | Dust-protected + protection against water splashes from any direction |
Note: For IP54 rating, please consult with the manufacturer when ordering.
The GGD Low-Voltage Fixed-Type Switchgear is a complete switch equipment set, developed and widely used in China.
| Standard | Description |
|---|---|
| IEC 60439-1 | Low-voltage switchgear and controlgear assemblies |
| GB 7251.1 | Low-voltage complete switch equipment and controller |
The GGD series offers a fixed (non-withdrawable) design, suitable for applications where lower cost and simplicity are prioritized over modular removal capability.
| Feature | Benefit |
|---|---|
| Withdrawable design | Individual units can be removed/replaced without system shutdown |
| High short-circuit withstand | 100 kA (eff.) / 250 kA (peak) – suitable for high-fault-level systems |
| High operating current | Main busbar up to 5500 A (IP00) / 4700 A (IP30) |
| Flexible protection ratings | IP30, IP40, IP54 – adaptable to various environments |
| Modular construction | Easy configuration, expansion, and maintenance |
| Complies with IEC & GB standards | IEC 60439-1, GB 7251.1 |
| Application Area | Suitability |
|---|---|
| Industrial plants | High current capacity, high fault withstand |
| Commercial buildings | Reliable power distribution, easy maintenance |
| Power plants and substations | Drawable design for critical infrastructure |
| Infrastructure projects | Airports, railways, data centers |
| Renewable energy systems | Solar farms, wind power plants |
| Feature | MNS Withdrawable | GGD Fixed |
|---|---|---|
| Design | Drawable (removable units) | Fixed (non-removable) |
| Maintenance | Unit replacement without system shutdown | Requires system shutdown |
| Flexibility | High – modular and expandable | Moderate |
| Fault withstand | 100 kA / 250 kA | Lower (typical) |
| Protection rating | IP30–IP54 | IP30–IP40 (typical) |
| Cost | Higher | Lower |
| Best for | Critical systems, high reliability | Cost-sensitive, simpler applications |
✅ Rated insulation voltage: 660 V
✅ Rated operating voltage: 380 V / 660 V
✅ Main busbar current: up to 5500 A (IP00) / 4700 A (IP30)
✅ Short-time withstand: 100 kA (eff.) / 250 kA (peak)
✅ Vertical busbar current: up to 1000 A
✅ Protection ratings: IP30, IP40, IP54
✅ Withdrawable design – maintenance without power shutdown
✅ Complies with IEC 60439-1 and GB 7251.1
✅ Modular and expandable – adapts to changing needs
Q: What is the difference between MNS and GGD switchgear?
A: MNS is withdrawable – individual units can be removed without system shutdown. GGD is fixed – requires system shutdown for maintenance. MNS offers higher fault withstand and greater flexibility.
Q: What is the rated insulation voltage?
A: 660 V.
Q: What is the maximum operating current for the main busbar?
A: 5500 A at IP00, 4700 A at IP30.
Q: What is the short-time withstand current rating?
A: 100 kA (effective value) and 250 kA (peak value).
Q: What protection ratings are available?
A: IP30, IP40, and IP54 (consult factory for IP54).
Q: What standards does the MNS switchgear comply with?
A: IEC 60439-1 and GB 7251.1.
Q: What is the vertical busbar current rating?
A: Maximum operating current of 1000 A, with short-time peak current of 90 kA or 130 kA.
Q: Can I get IP54 protection?
A: Yes, but please consult with the manufacturer when ordering as IP54 requires special construction.
| Item | Details |
|---|---|
| Packaging | Sturdy wooden crates or export-grade packaging |
| Shipping methods | Sea freight / Air freight / Land freight |
| Documentation | Packing list, commercial invoice, quality certificate, test reports (upon request) |
