ABB OT125F4C 4-Pole 125A Load Break Switch, Front Operated, 750V AC/1000V DC 1SCA105054R1001

The ABB OT125F4C is a 4-pole switch-disconnector rated for 125 A, providing reliable load breaking and isolation in industrial and commercial power distribution. Its front-operated mechanism allows manual control, while the base mounting design ensures stable installation in panels or switchboards.

Advantages

High electrical durability of 2000 cycles and a rated short-time withstand current of 3 kA for 1 second ensure long service life and safety under fault conditions. The screw terminals accommodate conductors from 1.5 to 70 mm², offering flexibility for various wiring sizes.

Suitable for

• Main switches in distribution boards
• Isolation of circuits for maintenance
• Motor disconnecting applications
• Industrial control panels

Key specifications

• Number of poles: 4
• Rated operational current (Ie): 125 A
• Rated operational voltage: 750 V AC / 1000 V DC
• Rated insulation voltage (Ui): 1000 V
• Rated impulse withstand voltage (Uimp): 8 kV
• Rated short-time withstand current (Icw): 3 kA / 1 s
• Rated frequency: 50/60 Hz
• Operating mechanism: Front operated (shaft and handle not included)
• Mounting type: Base mounting
• Terminal type: Screw terminals
• Main circuit terminal capacity: 1.5 - 70 mm²
• Degree of protection: IP20 (terminals), IP00 (front)
• Standards: IEC 60947-3
• Power loss per pole: 6.5 W
• Electrical durability: 2000 cycles

Recommendations

For optimal performance, use with ABB handles and shafts designed for OT series switches. Ensure proper torque on screw terminals according to manufacturer guidelines.