Schneider High Safety Low Voltage Switchboard
Schneider Electric BlokSeT is Schneider Electric’s flagship low-voltage switchboard system, designed in strict compliance with IEC 61439 and GB/T 7251 standards. With industry-leading internal arc protection and end-to-end safety design at its core, it delivers an uncompromising safety barrier for high-value and high-continuity applications.
Schneider High Safety Low Voltage Switchboard
Schneider Electric BlokSeT is Schneider Electric’s new-generation high-end modular low-voltage switchboard, fully compliant with IEC 61439-2 and GB/T 7251.2 standards, and certified through comprehensive Type Tested Assembly (TTA) verification.
Built on Schneider Electric’s EcoStruxure IoT architecture, the product integrates four core advantages: ultimate safety, intelligent operation and maintenance, ultra-high-density modular design, and long-term durability. It is engineered to meet both the demanding operating conditions of industrial applications and the refined power distribution requirements of high-end buildings.
As a premium low-voltage power distribution solution for smart manufacturing, data centers, renewable energy, and large-scale public infrastructure projects, BlokSeT has been deployed in hundreds of thousands of projects worldwide, with its performance and quality thoroughly proven by the market.
Advantages and Features
Premium Arc Fault Resistance: Certified through an 85kA/0.5s internal arc test, featuring active arc isolation and pressure relief channels. In the event of a fault, arc propagation can be suppressed within 0.1 seconds, ensuring maximum protection for both personnel and equipment.
Exceptional Short-Circuit Strength: The main busbar withstands up to 100kA/1s short-time current and 220kA peak current, enabling the system to endure extreme short-circuit impacts and prevent system collapse.
Full Segregation & Electric Shock Protection: Independent separation of busbar, functional unit, and cable compartments. The vertical busbar is equipped with red IP20 insulated barriers. Drawers feature four-position mechanical interlocking (Connected / Test / Withdrawn / Isolated) and support padlocking to prevent misoperation.
High Degree of Protection: Standard IP30, with optional IP40–IP54 ratings, providing excellent resistance against dust, moisture, and foreign object ingress, making it suitable for dusty, humid, and corrosive environments.
Rated Voltage: AC 400/690V; Rated Insulation Voltage: 1000V
Rated Main Busbar Current: Up to 6300A; Frequency: 50/60Hz
Short-Circuit Withstand Capacity: Icw = 100kA/1s, Ipk = 220kA
Form of Separation: Form 2b to Form 4b; Pollution Degree: Class 3
General Data
| Item | Specification |
Application | Power distribution / Motor control |
Service Index (IS) | 211 to 333 |
Standards | IEC 60439-1 / IEC 60529 / IEC 61641 |
Climate Resistance | Humidity: IEC 60068-2-30 |
Dry heat: IEC 60068-2-2 | |
Cold: IEC 60068-2-1 | |
Salt spray: IEC 60068-2-11 | |
Installation | Indoor |
EMC | Class 2 |
Mechanical Data
| Item | Specification |
Cable Entry | Top / Bottom |
Wiring Access | Front / Rear |
Protection Degree | IP20–IP54 |
Form of Separation | 2b / 3b / 4a / 4b |
Connection Type | FFD / WFD / WFW / WWW |
Dimensions (mm) | Height: 2200 |
Width: 500–1200 | |
Depth: 400 / 600 / 1000 | |
Average Weight | 650 kg |
Enclosure | Epoxy powder coating > 50 µm |
Frame | Galvanized |
Color | RAL9002 / RAL7016 |
Electrical Data
| Item | Specification |
Rated Insulation Voltage (Ui) | 1000 V |
Rated Operating Voltage (Ue) | 400 / 690 V AC |
Frequency | 50 / 60 Hz |
Rated Impulse Voltage (Uimp) | 12 kV |
Auxiliary Circuit Voltage | Max. 230 V AC |
Overvoltage Category | IV |
Pollution Degree | 3 |
Busbar Ratings
| Item | Specification |
Horizontal Busbar Current | Up to 6300 A |
Vertical Busbar Current | Up to 3200 A |
Horizontal Busbar:
Short-time withstand current (Icw/1s): 30 / 50 / 85 / 100 kA
Peak withstand current (Ipk): 63 / 105 / 187 / 220 kA
Vertical Busbar:
Short-time withstand current (Icw/1s): 30 / 50 / 85 kA
Peak withstand current (Ipk): 63 / 105 / 178 kA
Safety & System
| Item | Specification |
Internal Arc Protection (IEC 61641) | 85 kA / 0.3 s |
Earthing System | TT / IT / TNS / TNC |
Max Incoming/Outgoing Switch | 6300 A |
Max Motor Capacity | 250 kW |
