The Schneider Electric 28910 is a Compact INS125 3-pole switch disconnector rated at 125 A, designed to safely isolate electrical circuits in industrial and commercial power distribution systems. It operates on both AC networks up to 690 V (50/60 Hz) and DC circuits, with a rated insulation voltage of 800 V AC and a rated impulse withstand voltage of 8 kV.

Technical specifications:

• Commercial reference: 28910
• Manufacturer: Schneider Electric
• EAN: 3303430289104
• Series / range: Compact INS (Compact group)
• Product type: Switch disconnector
• Number of poles: 3P
• Network type: AC / DC
• Network frequency: 50/60 Hz
• Rated current (Ie): AC-22A 125 A at 220/240 V to 690 V AC; AC-23A 125 A up to 500 V AC, 80 A at 660/690 V AC; DC-22A/DC-23A 125 A at 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 50/60 Hz
• Rated impulse withstand voltage (Uimp): 8 kV
• Conventional thermal current (Ith): 125 A at 60C
• Making capacity (Icm): 20 kA standalone / 154 kA with protective circuit breaker at 690 V AC 50/60 Hz
• Short-time withstand current (Icw): 5.5 kA for 1 s / 3.175 kA for 3 s / 1.23 kA for 20 s / 1 kA for 30 s per IEC 60947-3
• Maximum switched power (AC-23): 75 kW at 660/690 V AC; 75 kW at 500/525 V AC; 55 kW at 380/415 V and 440 V AC; 37 kW at 220/240 V AC
• Rated duty: Continuous; intermittent duty class 120 – 60%
• Mechanical endurance: 15,000 cycles
• Electrical endurance: 1,500 cycles at AC-22A and AC-23A across all rated voltages
• Suitable for isolation: Yes
• Contact position indicator: Yes
• Visible break: No
• Pollution degree: 3
• Control type: Rotary handle (black)
• Mounting: Fixed; DIN rail or panel
• Connection terminals: Front upper and front lower
• Connection spacing: 30 mm
• Dimensions (W x H x D): 135 x 100 x 62.5 mm
• Weight: 0.8 kg
• IP protection: IP40 per IEC 60529
• IK protection: IK07 per EN 50102
• Operating temperature: -25 to 70C
• Storage temperature: -50 to 85C
• Standards: IEC 60947-1, IEC 60947-3
• Certifications: CCC, KEMA-KEUR

Features and benefits:

• Approved for use as an isolator, enabling safe maintenance isolation of downstream circuits
• Integrated contact position indicator gives clear visual confirmation of switch state
• Rated for AC networks up to 690 V and DC circuits, covering a broad range of installation types
• Fixed-mount design accommodates both DIN rail and panel mounting for flexible installation
• High mechanical endurance of 15,000 cycles ensures long service life in demanding applications
• Wide operating temperature range of -25 to 70C suits harsh industrial environments

Applications:

• Main isolation duty in industrial power distribution and switchgear assemblies
• Motor circuit isolation and safe maintenance switching in machine building
• Isolation switching in commercial and industrial electrical distribution boards
• AC and DC power system isolation in automation and process control panels
• Heavy-duty isolation in controlgear and busbar-fed distribution systems

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

Also known as: Schneider 28910, Schneider Electric 28910, Compact INS125 switch disconnector, 125 A 3-pole isolator switch.