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Low Voltage Switchgear
14 Series · 130 Models
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Low Voltage Switchgear Overview
Low-voltage switchgear and motor control centers (MCCs) deliver the final stage of power distribution to end-use equipment. QDTB supplies distribution cabinets, MCCs, capacitor banks, and automatic transfer switch (ATS) panels rated 0.22-0.4 kV per IEC 61439 and GB 7251. Designs are offered in fixed and withdrawable forms, with busbar ratings from 400 A to 6,300 A and internal separation per Forms 1-4, integrating breakers, contactors, and metering for reliable industrial and commercial distribution.
Available Series
GGJ Series
The GGJ series low voltage reactive power compensation cabinets provide intelligent power factor correction for industrial applications. Features zero-crossing switching technology and optional GPRS remote monitoring for optimized energy efficiency. Rated 380 V, IP30 enclosure (IP54/IP66 outdoor options available on request). Suitable for indoor substations, motor control centers (MCC), industrial plants, and building power distribution.
GGD Series
The GGD series represents fixed low-voltage distribution switchgear for general power distribution applications, offering cost-effective and reliable solutions. Rated 380 V, IP30 enclosure (IP54/IP66 outdoor options available on request). Suitable for indoor substations, motor control centers (MCC), industrial plants, and building power distribution.
GCK Series
The GCK series represents withdrawable low-voltage switchgear for power distribution and motor control, offering flexible configuration and easy maintenance. Rated 380 V, IP30 enclosure (IP54/IP66 outdoor options available on request). Suitable for indoor substations, motor control centers (MCC), industrial plants, and building power distribution.
GCS Series
The GCS series represents withdrawable low-voltage distribution switchgear, providing reliable power distribution with enhanced safety features. Rated 380 V, IP30 enclosure (IP54/IP66 outdoor options available on request). Suitable for indoor substations, motor control centers (MCC), industrial plants, and building power distribution.
MNS Series
The MNS series represents modular withdrawable low-voltage switchgear, offering flexible configuration and international standard compliance. Rated 380 V, IP30 enclosure (IP54/IP66 outdoor options available on request). Suitable for indoor substations, motor control centers (MCC), industrial plants, and building power distribution.
Blokset Series
The Blokset series low voltage switchgear features intelligent protection with Masterpact and Compact NSX circuit breaker compatibility. Designed for data centers, hospitals, and critical infrastructure requiring reliable power distribution and advanced protection. Rated 380 V, IP30 enclosure (IP54/IP66 outdoor options available on request). Suitable for indoor substations, motor control centers (MCC), industrial plants, and building power distribution.
SIVACON Series
The SIVACON series low voltage switchgear incorporates Siemens technology for flexible configuration across power distribution, motor control, and compensation applications. Provides reliable performance in demanding industrial environments. Rated 380 V, IP30 enclosure (IP54/IP66 outdoor options available on request). Suitable for indoor substations, motor control centers (MCC), industrial plants, and building power distribution.
ArTu Series
The ArTu series low voltage switchgear features ABB components with Emax2 and InR air circuit breaker compatibility. Designed for commercial buildings, industrial plants, and infrastructure projects requiring reliable LV power distribution. Rated 380 V, IP30 enclosure (IP54/IP66 outdoor options available on request). Suitable for indoor substations, motor control centers (MCC), industrial plants, and building power distribution.
XL Series
The XL series power distribution boxes provide compact terminal distribution solutions for residential, commercial, and light industrial applications. Features space-efficient design with reliable circuit protection for downstream loads. Rated 380 V, IP30 enclosure (IP54/IP66 outdoor options available on request). Suitable for indoor substations, motor control centers (MCC), industrial plants, and building power distribution.
JP Series
The JP series integrated distribution panels combine power distribution with built-in reactive power compensation in an all-in-one solution. Designed for rural distribution transformer substations, providing simplified installation and comprehensive power management. Rated 380 V, IP30 enclosure (IP54/IP66 outdoor options available on request). Suitable for indoor substations, motor control centers (MCC), industrial plants, and building power distribution.
SLVA Series
The SLVA series PV grid-connection panels are specialized switchgear for solar power plant applications. Integrated with surge protection, isolation switches, and smart metering for reliable renewable energy grid connection and power quality management. Rated 380 V, IP30 enclosure (IP54/IP66 outdoor options available on request). Suitable for indoor substations, motor control centers (MCC), industrial plants, and building power distribution.
Outdoor LV Switchgear Series
Outdoor low-voltage switchgear enclosures are engineered for exposed, high-severity corrosive environments: IP66 ingress protection, C5-M corrosion resistance, 316L stainless hardware, and 25 kA short-circuit withstand, with rain hoods and anti-condensation features as standard options. Rated 380 V, IP66 enclosure. Suitable for oil & gas wellheads, coastal and marine installations, chemical plants, and outdoor substations.
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Certification
The values below are computed from what you selected above. Anything that cannot be computed yet is shown as an em dash — never as zero.
Iₙ = S / (√3·U) · I_sc = 100·Iₙ / uₖ · S_sc = √3·U·I_sc · I_p = k·Iₖ
Still required to complete the calculation: rated capacity S, impedance voltage uₖ, short-time or peak withstand current.
Per-model values (P0 / Pk / uₖ declared by the factory, losses, noise, temperature rise, dimensions, weight) are not in the product library: those rows stay at an em dash until the factory parameter sheet is supplied. An em dash means the value is unavailable — it is never rendered as zero.
Reference prices are for estimation only and do not constitute a formal offer.
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Application Scenarios
Manufacturing
MCCs for production lines with motor protection.
Commercial
Main and floor distribution for buildings.
Water Treatment
Pumping station switchgear.
Power Factor
Automatic capacitor compensation.
Emergency Power
ATS for generator integration.
Building Management
BMS-integrated distribution panels.
Technical Advantages
Modular
Standardized for easy expansion.
Protection
Complete overload and short-circuit safety.
Monitoring
Real-time parameter tracking.
Safety
IP4X finger-safe with arc protection.
FAQ - Low Voltage Switchgear
What is the difference between a distribution board and an MCC?
Fixed or withdrawable switchgear - which should I choose?
What is Form separation in switchgear?
How is the busbar rating selected?
What is the minimum order quantity (MOQ) for Low Voltage Switchgear?
What is the delivery time for Low Voltage Switchgear?
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All specifications and dimensions can be customized upon request
Fixed vs Withdrawable vs Motor Control Center: How to Choose
| Fixed-Type Distribution Panel | Withdrawable Switchgear | Motor Control Center (MCC) | |
|---|---|---|---|
| Access for maintenance | Busbar de-energised before a device can be worked on | Device racked out while the busbar stays live | Each starter bucket withdrawn on its own |
| Form separation | Lower form separation, with devices in a common compartment | Higher form separation, with separate cable and busbar zones | Form 4, with a compartment per starter |
| Devices | MCCBs and ACBs fixed to the busbar | ACBs and MCCBs on withdrawable cassettes | Contactors, overloads and soft starters |
| Downtime | Whole panel out for a device replacement | One circuit out for a replacement | One motor out for a replacement |
| Cost | Lowest per outgoing way | Higher, driven by cassettes and interlocks | Highest, because every bucket is a tested unit |
| Space | Compact for many small ways | Deeper, to house the racking mechanism | Deep, with separate cable and busbar zones |
| Typical application | Commercial distribution and small plants | Main LV boards in industrial plants | Process plants with many motors |
Where QDTB® Low-Voltage Switchgear Is Specified
Low-voltage switchgear delivers the final stage of distribution, so it is specified in every plant room that has to split a supply between feeders: manufacturing lines, water treatment works and the building management boards of commercial estates. Busbar rating, Form separation and the fixed or withdrawable choice all follow from how often the operator expects to work on the panel live.
Process plants with many motors specify motor control centres, because one starter bucket can be withdrawn and replaced without touching the busbar or stopping the rest of the line. Capacitor banks and reactive compensation panels are built on the same platform, with the switching duty and ventilation set by the bank rating.
Emergency power schemes add automatic transfer switch panels and split the LV board into essential and non-essential sections. The standby generator then carries only the loads that must survive an outage, which keeps its rating — and its fuel consumption — proportionate to the critical load.
Panels are rated 0.22-0.4 kV to IEC 61439 and GB 7251, with busbars from 400 A to 6,300 A. Internal separation to Forms 1-4, the device schedule and the metering points are agreed with the operator before the panel is released to production.
Frequently Asked Questions
What is the difference between a distribution board and an MCC?
A distribution board feeds lighting and general circuits, while an MCC (motor control center) houses motor starters, contactors, and drives for industrial motor loads.
Fixed or withdrawable switchgear - which should I choose?
Fixed switchgear is compact and economical but needs de-energization for maintenance. Withdrawable switchgear lets a unit be racked out and serviced without affecting other circuits.
What is Form separation in switchgear?
Form separation (Forms 1-4) defines internal partitioning between busbars, devices, and terminals for safety and maintenance. Higher forms improve safety but increase size and cost.
How is the busbar rating selected?
The busbar rating is the connected load multiplied by the demand factor plus a 25% margin. QDTB busbars are available from 400 A to 6,300 A.
What is the minimum order quantity (MOQ) for Low Voltage Switchgear?
One unit for standard products. Custom-designed equipment is quoted on specifications — send your parameters or drawings and our sales team will confirm the MOQ for your configuration.
What is the delivery time for Low Voltage Switchgear?
Standard units are delivered in 30-45 days. Custom or large-capacity units follow a project-specific schedule confirmed at quotation. Rush orders can be accommodated for urgent projects.