The Schneider Electric 31108 is a Compact INS320 3-pole switch disconnector rated at 320 A for AC systems up to 690 V and DC at 125 V, designed for safe circuit isolation in industrial power distribution and motor control panels. It features a direct front rotary handle and a contact position indicator for reliable operational status confirmation.

Technical specifications:

• Commercial reference: 31108
• Manufacturer: Schneider Electric
• EAN: 3303430311089
• Series / range: Compact INS
• Product type: Switch disconnector
• Number of poles: 3P
• Network type: AC / DC
• Network frequency: 50/60 Hz
• Rated current [Ie]: 320 A AC-22A/AC-23A (220-690 V AC); 320 A DC-22A/DC-23A (125 V DC, 2 poles in series)
• Rated voltage [Ue]: 690 V AC 50/60 Hz / 125 V DC
• Rated insulation voltage [Ui]: 800 V AC
• Rated impulse withstand voltage [Uimp]: 8 kV (IEC 60947-3)
• Conventional thermal current [Ith]: 320 A at 60C
• Rated short-circuit making capacity [Icm]: 330 kA (with protective CB, 690 V AC) / 50 kA standalone
• Short-time withstand current [Icw]: 20 kA for 1 s / 11.5 kA for 3 s (IEC 60947-3)
• Maximum switched power: 250 kW at 660/690 V AC (AC-23)
• Mechanical endurance: 10,000 cycles
• Control: Direct front rotary handle, black
• Mounting: Fixed, plate or DIN rail
• Connection: Front top and bottom, 45 mm
• Dimensions (WxHxD): 185 x 205 x 120 mm
• Weight: 4.6 kg
• IP protection: IP40 (IEC 60529)
• IK protection: IK07 (EN 50102)
• Operating temperature: -25…70C
• Standards: IEC 60947-1, IEC 60947-3
• Certifications: CCC, KEMA-KEUR
• Suitable for isolation: Yes
• Contact position indicator: Yes
• Pollution degree: 3

Features and benefits:

• Approved for safe isolation per IEC 60947-3, protecting personnel during maintenance and service
• Contact position indicator gives instant visual confirmation of open or closed circuit state
• 330 kA short-circuit making capacity (with protective CB) for demanding fault conditions
• Wide -25…70C operating temperature range suitable for harsh industrial environments
• Flexible installation on plate or DIN rail with front-access top and bottom connections

Applications:

• Main isolation switching in industrial switchboards and motor control centers
• Power distribution panels in manufacturing plants and process control facilities
• Disconnection of large motor loads up to 250 kW at 660/690 V AC
• DC distribution systems at 125 V in industrial automation installations

Compliant with IEC 60947-1 and IEC 60947-3. Part of the Schneider Electric Compact INS range.

Also known as: Schneider 31108, Schneider Electric 31108, Compact INS320 switch disconnector, 320 A isolator switch.