SCHELINGER A11-SR8-4P-100 4-Pole 100A Isolating Switch Disconnector

The SCHELINGER A11-SR8-4P-100 is a high-quality 4-pole isolating switch disconnector rated at 100A, designed for reliable main switching and disconnection in electrical distribution systems. Compliant with IEC/EN 60947-3, this robust device ensures safe isolation of circuits during maintenance or emergency shutdowns. Its compact 4-module design fits standard DIN rail (TH35) enclosures, making it ideal for industrial, commercial, and residential applications.

Advantages

This isolating switch offers exceptional durability with a mechanical life of 20,000 cycles and electrical life of 10,000 cycles. The IP40 front protection and IP20 terminal protection provide safety against dust and accidental contact. With a rated impulse withstand voltage of 6 kV and short-circuit withstand capacity of 10 kA (1s), it delivers reliable performance under fault conditions. The wide operating temperature range (-25°C to +50°C) ensures functionality in diverse environments.

Suitable for

• Main switch/disconnector in distribution boards
• Industrial control panels
• Commercial building electrical systems
• Renewable energy installations (e.g., solar PV)
• Maintenance isolation for machinery

Key specifications

• Number of Poles: 4P
• Rated Current (In): 100 A
• Rated Operational Voltage (Ue): 400 V AC
• Rated Insulation Voltage (Ui): 690 V AC
• Rated Impulse Withstand Voltage (Uimp): 6 kV
• Short-circuit Withstand Current (Icw): 10 kA (1s)
• Standard Compliance: IEC/EN 60947-3
• Mounting Type: DIN Rail (TH35)
• Modular Width: 4 Modules
• Terminal Capacity: 1.5 - 50 mm²
• Electrical Life: 10,000 cycles
• Mechanical Life: 20,000 cycles
• Degree of Protection (Front): IP40
• Degree of Protection (Terminals): IP20
• Operating Temperature Range: -25°C to +50°C
• Frequency: 50/60 Hz

Recommendations

For optimal performance, ensure proper torque settings during terminal connection (refer to manufacturer guidelines). This switch is suitable for use as a main isolator in accordance with local electrical codes. Always verify compatibility with upstream protective devices.