GCS Low Voltage Withdrawable Switchgear

TOONICE’s GCS Low-Voltage Cabinet, whose full name is GCS-type Low-Voltage Drawout Switchgear, is a commonly used standardized power distribution device in low-voltage power distribution systems. It is mainly applied in low-voltage power distribution systems with AC (Alternating Current) 50Hz, a rated voltage of 380V (or 660V), and a rated current of up to 3150A. Its core functions include the distribution, control, protection, and monitoring of electrical energy, and it is widely used in low-voltage power distribution links across industrial, commercial, and civil construction fields.

I.Core Features of GCS Low-Voltage Cabinet

The core advantage of GCS cabinets lies in the “drawout-type” structural design, which distinguishes them from traditional “fixed cabinets” (such as GGD cabinets). Their key features are as follows:

1. Modular Drawer Design:

The core electrical components in the cabinet (such as circuit breakers, contactors, relays, etc.) are integrated into “drawer units”, and each drawer corresponds to an independent power distribution circuit (such as a power circuit, lighting circuit). Drawers can be flexibly plugged and unplugged as needed. When replacing or maintaining, there is no need to disconnect the power supply of the entire power distribution cabinet; only the corresponding drawer needs to be pulled out, which greatly improves the convenience of operation and maintenance and the continuity of power supply.

2. High Safety:

Drawer units are equipped with dual protections of “mechanical interlock” and “electrical interlock”:

① Mechanical interlock: Ensures that the drawer cannot be pulled out when in the “closed” state, avoiding live-line operation;

② Electrical interlock: Prevents incorrect closing and incorrect opening, avoiding circuit short-circuit or electric shock risks to personnel.

3. Standardization and Flexibility

In accordance with the national standard GB 7251.1-2013 Low-voltage Switchgear and Controlgear Assemblies – Part 1: General Rules, the dimensions (such as height and width) of drawer units are standardized (common unit specifications: 1/2 unit, 1 unit, 2 units, etc.). They can be flexibly combined according to power distribution requirements to adapt to different numbers of circuits and load types (such as motor control, lighting power distribution, emergency power circuits).

II. Structural Composition of GCS Low-Voltage Cabinet

GCS Low-Voltage Cabinets are usually composed of two major parts: the “cabinet frame” and “functional units”. The specific structural breakdown is as follows:

III. Application Scenarios of GCS Low-Voltage Cabinetpplication Scenarios

Due to the flexibility and high reliability of its drawout-type structure, GCS cabinets are mainly suitable for scenarios with high requirements for power supply continuity and operation & maintenance convenience. Typical applications include:

① Industrial field: Motor Control Centers (MCC) in factory workshops, and power distribution for production lines (such as power control and protection of fans, water pumps, and machine tools);
② Commercial buildings: Low-voltage distribution rooms in large shopping malls and office buildings, used for electrical energy distribution of equipment such as lighting, air conditioners, and elevators;
③ Public facilities: Places with extremely high requirements for power supply reliability, such as hospitals, data centers, and subway stations, to avoid power outage risks caused by maintenance;
④ Civil buildings: Low-voltage distribution rooms in high-rise residential buildings, used for individual household electrical energy distribution and power control in public areas (such as corridor lighting and fire-fighting equipment).