ABB OT125M3 3-Pole Vertical Load Break Switch 125A 1000V 1SCA022429R9140

The ABB OT125M3 is a 3-pole vertical load break switch rated for 125 A operational current, providing reliable switching and isolation in industrial power distribution applications up to 1000 V AC.

Advantages

This switch offers high mechanical durability of 20,000 operations and robust short-circuit withstand capability, ensuring long service life and dependable performance in demanding environments. Its base-mounted design with screw terminals allows for secure and straightforward installation.

Suitable for

• Main switch applications in industrial control panels
• Isolation of power circuits in machinery and equipment
• Switching of motors and other inductive loads up to 55 kW at 400 V
• Distribution boards requiring a compact, high-current disconnector

Key specifications

• Number of poles: 3
• Rated operational current (Ie): 125 A
• Rated operational voltage (Ue): 1000 V AC / 750 V DC
• Rated insulation voltage (Ui): 1000 V
• Rated impulse withstand voltage (Uimp): 8 kV
• Rated short-time withstand current (Icw) 1s: 3 kA
• Rated short-circuit making capacity (Icm): 15 kA at 690 V
• Rated operational power AC-23A: 55 kW at 400 V, 90 kW at 690 V
• Mounting type: Base mounted
• Terminal type: Screw terminals
• Main circuit terminal capacity: 1 x 50-95 mm² / 2 x 25-50 mm² (Cu)
• Degree of protection: IP20 (front)
• Operating temperature range: -25 to +70 °C
• Mechanical durability: 20,000 cycles
• Electrical durability (AC-23A 690V): 1,000 cycles
• Standards: IEC 60947-3, EN 60947-3

Recommendations

For optimal performance, pair this switch with ABB's range of pistol handles and shaft extensions to enable external operation. Ensure proper cable sizing according to the terminal capacity and local regulations.