GGD Fixed Low-Voltage Switchgear

GGD is fixed low-voltage switchgear for receiving, distributing and controlling power in industrial and building electrical systems. The documented GGD1, GGD2 and GGD3 variants provide different current and short-circuit ratings. Fixed circuit devices are arranged to suit the incoming supply, outgoing loads and protection scheme. Select the variant from the electrical duty rather than combining the highest values from several versions.

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GGD Switchgear is a fixed low-voltage distribution assembly for industrial and building electrical systems. Read the GGD1, GGD2 and GGD3 variant tables separately; additional series options do not form one combined configuration.

GGD Switchgear Specifications

Basic Variant Ratings

Variant	Rated voltage	Rated current options	Short-time withstand (1 s)	Peak withstand
GGD1	380 V AC	400 / 600 (630) / 1000 A	15 kA	30 kA
GGD2	380 V AC	600 / 1000 / 1500 (1600) A	30 kA	63 kA
GGD3	380 V AC	2000 / 2500 / 3150 A	50 kA	105 kA

Additional Electrical Options

Parameter	Specification / configuration
Rated frequency	50 Hz; 60 Hz configurations are selected separately
Rated insulation voltage options	660 / 690 V
Rated impulse withstand voltage	12 kV in the supplied series data
Auxiliary supply options	220 / 380 V AC or 220 V DC
Enclosure protection	IP30 standard; IP20–IP40 options according to configuration

Standard Service Conditions

Parameter	Specification / configuration
Ambient temperature	−5 to +40 °C; 24-hour mean up to +35 °C
Altitude	Up to 2000 m; higher-altitude configurations require review
Relative humidity	Up to 50% at +40 °C or 90% at +20 °C
Installation	Indoor; maximum inclination 5°
Environment	No severe vibration, impact or corrosive gases

Ratings and options apply to the selected configuration. The agreed drawings and equipment schedule define the supplied assembly.

Fixed distribution arrangement

The fixed construction is organized around the specified incoming and outgoing circuits. Device selection, internal connections, protection coordination and cable space are defined by the circuit schedule. The assembly can serve power and lighting distribution duties without assuming that every outgoing device has the same rating as the main busbar.

Select a basic variant first

The table presents the three basic variants described in the supplied documentation. Higher-current or enhanced short-circuit arrangements require a separately defined design. Installation access, heat dissipation and the actual load profile should be reviewed when agreeing the lineup and enclosure.

Information for Selection

GGD1/2/3 variant and single-line diagram
Incoming/outgoing currents and prospective fault level
Protection devices, auxiliary circuits and metering
Indoor environment, access, cable entry and enclosure protection

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