GCK Low-Voltage Withdrawable Switchgear
Product Model
△Product Model and Its Meaning

△Explanation of the Scheme Number for the Primary and Secondary Circuits of the Functional Unit in the GCK Motor Control Center

△Explanation of Secondary Circuit Scheme Code Number

Product Functions
◆Provides centralized motor control and circuit protection with modular functional units.
◆Incoming unit features three-stage (instantaneous, short-delay, overload) protection, customizable for selective coordination.
◆Offers segmented or non-segmented horizontal busbar configuration with optional auto-reclosure for bus-tie switches.
◆Motor control circuits include short-circuit, overload, undervoltage, and phase-failure protection.
◆Feeder circuits equipped with instantaneous and overload protection; optional earth leakage protection available.
◆Supports integration with programmable controllers (PC) or microprocessors for automated system control.
◆Includes metering options (ammeters, active/reactive energy meters) for power monitoring.
Applicable Environment
◇Designed for low-voltage power distribution and motor control in industrial and commercial settings.
◇Suitable for AC circuits rated at 380V, 50Hz.
◇Ideal for supplying and protecting motor loads, feeder circuits, and specialized circuits such as those for portable tools (e.g., drills, grinders) via lighting/appliance circuits with residual current protection.
◇Can be used as an execution unit within larger automated control systems.
Product Highlights
◆High Safety & Reliability: Isolated compartment design prevents fault propagation. Full protective grounding and compliance with international standards (IEC60439, GB/T 7251.12) ensure personnel and equipment safety.
◆Superior Protection Scheme: Advanced three-stage protection for incoming lines and customizable coordination with downstream devices. Motor circuits feature energy-saving silent AC contactors with a built-in delay release (>0.3s), allowing seamless power restoration within 0.3s for uninterrupted operation.
◆Flexible & Modular Configuration: Interconnected cabinet system allows versatile combinations of functional units. Offers multiple busbar and switch reclosing options to meet diverse grid and protection requirements.
◆Automation Ready: Equipped with interfaces for easy connection to programmable controllers or microprocessors, facilitating smart grid and industrial automation integration.
◆Comprehensive Monitoring: Optional metering devices for key circuits enable effective energy management and system monitoring.













