Schneider 28908 switch disconnector

The Schneider Electric 28908 is a 3-pole Compact INS100 switch disconnector rated at 100 A, designed for safe isolation of AC and DC circuits in industrial and commercial electrical installations. It supports rated voltages up to 690 V AC and 125 V DC, with a rated insulation voltage of 800 V AC and a withstand impulse voltage of 8 kV.

Technical specifications:

• Commercial reference: 28908
• Manufacturer: Schneider Electric
• EAN:
• Series / range: Compact INS
• Product type: Switch disconnector
• Number of poles: 3P
• Network type: AC / DC
• Network frequency: 50/60 Hz
• Rated current (AC-22A): 100 A at 220/240 V, 380/415 V, 440/480 V, 500 V, 660/690 V AC 50/60 Hz
• Rated current (AC-23A): 100 A up to 500 V; 63 A at 660/690 V AC 50/60 Hz
• Rated current (DC-22A / DC-23A): 100 A at 125 V DC (2 poles in series)
• Rated insulation voltage [Ui]: 800 V AC 50/60 Hz
• Rated impulse withstand voltage [Uimp]: 8 kV
• Thermal current in air [Ith]: 100 A at 60 °C
• Rated short-circuit making capacity [Icm]: 154 kA with circuit breaker at 690 V AC; 20 kA stand-alone at 690 V AC
• 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 (IEC 60947-3)
• Maximum power (AC-23): 22 kW at 220/240 V; 45 kW at 380/415 V; 55 kW at 440-690 V AC
• Rated duty cycle: Continuous
• Mechanical durability: 15,000 cycles
• Electrical durability: 1,500 cycles (AC-22A and AC-23A at all rated voltages)
• Mounting: Fixed, on plate or DIN rail
• Connection terminals: Front (top and bottom)
• Control type: Rotary handle (black)
• Dimensions (HxWxD): 100 x 135 x 62.5 mm
• Weight: 0.8 kg
• IP protection: IP40 (IEC 60529)
• IK protection: IK07 (EN 50102)
• Operating temperature: -25...70 °C
• Storage temperature: -50...85 °C
• Standards: IEC 60947-3, IEC 60947-1
• Certifications: CCC, KEMA-KEUR
• Warranty: 18 months

Features and benefits:

• Suitable for isolation duty, with clear contact position indicator
• Compatible with both AC and DC networks across a wide voltage range up to 690 V AC
• High short-circuit making capacity of 154 kA when combined with a circuit breaker
• Flexible mounting on DIN rail or mounting plate with front connection terminals
• Wide operating temperature range of -25 to 70 °C for demanding industrial environments
• IP40 enclosure protection with IK07 mechanical impact resistance

Applications:

• Main or sub-circuit isolation in industrial control panels and distribution boards
• Motor feeder disconnection in machinery and process automation systems
• Safe isolation in commercial and industrial AC distribution up to 690 V
• DC circuit isolation in photovoltaic or battery systems at 125 V DC (2 poles in series)
• Load disconnection and maintenance isolation in manufacturing facilities

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

Also known as: Schneider 28908, Schneider Electric 28908, Compact INS100 switch disconnector, 100 A 3-pole isolator switch.