AIS - Air Insulated Switchgear

We provide a wide range of air-insulated switchgear products that are manufactured to meet the highest and latest international standards. These products are mainly used for control and protection in medium-voltage power circuits for industrial, commercial and utility installations.

12/17.5 Kv metal clad switchgear , type alfa12

alfanar aLFa12 is an air-insulated Medium Voltage metal clad switchgear. It is designed, manufactured and type-tested in accordance with the latest IEC standards and GCC region specifications.
alfa12 is commonly used in control and protection of medium voltage power equipment and circuits in industrial, commercial and utility installations involving medium voltage distribution feeders.

Technical Specifications:

  • Air insulated Medium Voltage Metal clad switchgear, as per IEC 62271-200.
  • Rated Voltage: 12/17.5 Kv
  • Main Bus current Ratings : (630/1250/2000/3150)A
  • Functional units: Incoming Feeder, outgoing Feeder, Bus Riser, Bus Section, Bus VT (Bus Earthing).
  • Short circuit withstand current up to 31.5KA.
  • Short circuit duration tsc=3 sec
  • Frequency : 50/60 Hz
  • Power frequency withstand voltage( for 1 min ) : 38 kV (rms)
  • Lightning impulse withstand voltage : (1.2/50 μs): 95kV (peak)
  • Internal Arc Classification: AFLR (31.5KA/1s)
  • Loss of Service continuity : LSC2B-PM


15 KV metal clad switchgear , type ANSI switchgear

alfanar alfa ANSI is an air-insulated Medium Voltage metal clad switchgear. The switchgear complies with the highest quality requirements. alfa ANSI switchgear is designed, manufactured and type-tested to be the most reliable and durable metal clad switchgear in accordance with ANSI/ IEEE C37.20.2 standards.

alfa ANSI switchgear is commonly used in control and protection of medium voltage power equipment and circuits mainly in oil and Gas applications, industrial and utility installations of medium voltage feeders.

Technical Specifications:

  • Air insulated Medium Voltage Metal clad switchgear, as with ANSI/ IEEE C37.20.2
  • Rated Voltage: 4.76 KV/8.2 KV/15KV
  • Main Bus current Ratings : (1200/2000/3000/3500)A and 4000A Forced Cooling
  • Functional units: Incoming Feeder, outgoing Feeder, Bus Riser, Bus Coupler, with different breaker stacking configurations.
  • Short circuit withstand current up to 50KA
  • Short circuit duration tsc= 2 sec
  • Power frequency withstand voltage : 60Hz - 1 min 19kV/36kV(rms )
  • Lightning impulse withstand voltage : 60kV/95kV (peak)


17.5 KV metal clad switchgear, type NES-H

alfanar NES-H is an Air Insulated Medium Voltage metal clad switchgear which is designed, manufactured and type-tested in accordance with the latest IEC standards and Saudi Electricity Company (SEC) specifications.

alfanar NES-H Switchgear complies with the highest quality requirements and is tested for resistance to internal arc faults (IAC AFLR). alfanar NES-H switchgear is commonly used in control and protection of medium voltage power equipment and circuits in industrial, commercial and utility installations involving generators, motors, feeder circuits, and transmission and distribution feeders.

Technical Specifications:

  • Air Insulated Medium Voltage Metal Clad Switchgear as per IEC 62271-200
  • Rated voltage: 17.5kV
  • Main bus current ratings: (630/1250/3150/4000*) A, *4000A is forced cooling
  • Functional units: Incoming Feeder, Outgoing Feeder, Bus Riser, Bus Section, Bus VT/Earthing
  • Short circuit withstand current up to 40kA
  • Short circuit duration (tsc): 3 sec
  • Frequency: 60Hz
  • Power frequency withstand voltage (for 1min): 38kV (rms)
  • Lightning impulse withstand voltage (1.2/50 μs): 95kV (peak)
  • Internal arc classification: AFLR (40KA/1sec)
  • Loss of service continuity: LSC2B-PM