The Low Voltage Distribution Cabinet Series from WELTRUS offers a full range of modular and fixed-type low-voltage switchgear for safe and reliable power distribution.

• GCK: Drawer-type low-voltage switchgear with flexible configuration, strong mechanical performance, and high thermal stability. Ideal for power plants, substations, and industrial installations.
• GCS: Drawer-type modular system designed for easy interchangeability, high protection, and convenient operation in industrial and commercial environments.
• GGD: Fixed-type low-voltage cabinet with strong practicality, suitable for main power distribution and sub-distribution applications.
• Mmax ST: Withdrawable modular low-voltage switchgear with up to 36 circuits, high modularity, and compact design.
• MLS: Low-voltage drawer-type switchgear assembled from standard modules for flexible power distribution and reactive power compensation.

These systems are built from high-quality cold-rolled steel, aluminum-zinc coated steel, or stainless steel, ensuring durability and long service life.

Simplified Technical Specifications – GCK

Parameter	Value
Rated Voltage	AC 380V
Rated Frequency	50 Hz
Horizontal Busbar Current	630–3150 A
Vertical Busbar Current	630–1000 A
Control/Main Circuit	125–2000 A
Short-Time Withstand Current	Up to 63 kA
Protection Class	IP30–IP50

Simplified Technical Specifications – GCS

Parameter	Value
Main Circuit Voltage	AC 380 / 400 / 600 V
Rated Frequency	50/60 Hz
Horizontal Busbar	5000 A
Vertical Busbar	1000 A
Short-Time Withstand Current	105 kA
Peak Withstand Current	250 kA
Protection Class	IP30

Simplified Technical Specifications – GGD

Model	Rated Voltage	Rated Current	Short-Circuit Breaking (kA)	Short-Time Withstand (kA)	Peak Withstand (kA)
GGD1	0.4 kV	1500 A	15	15	30
GGD2	0.4 kV	3150 A	30	30	63
GGD3	0.4 kV	3150–6300 A	50	50	105

Simplified Technical Specifications – Mmax ST

Parameter	Value
Rated Voltage	690V/1000V AC, 1500V DC
Working Voltage	400V/690V AC
Rated Current	Main Busbar: 6300 A
Peak Withstand Current	250 kA
Short-Time Withstand	100 kA

Simplified Technical Specifications – MLS

Parameter	Value
Rated Voltage	400/690V AC
Rated Current	Main Busbar: 2000–5000 A
Protection Level	IP30–IP50
Application	Energy distribution, conversion, control, reactive power compensation

About Manufacturer

WELTRUS (Hangzhou Weltrus New Energy Technology Co., Ltd.), part of the Welfull Group, provides a full portfolio of medium- and low-voltage switchgear systems built to international safety and efficiency standards. The company’s focus on modularity, flexibility, and quality ensures long-term operational reliability for diverse power distribution needs.