ABB OT Plus OT25G1-3BS25 3-Pole Base-Mount Load Break Switch, 25 A, 750 V, Direct Rotary Handle

In industrial and commercial electrical installations, safely isolating circuits for maintenance or emergency shutdown is a critical requirement. The ABB OT Plus OT25G1-3BS25 load break switch provides a robust and reliable solution for switching and isolating three-phase loads up to 25 A, ensuring operational safety and compliance with international standards.

Who is it for

This switch is ideal for panel builders, electrical contractors, and maintenance engineers working on low-voltage distribution systems, motor control centers, and machine control panels. It suits applications where a compact, manually operated switch is needed for local isolation of equipment such as pumps, fans, conveyors, and heating systems.

Main features

• Rated operational current of 25 A (AC-21A/AC-22A/AC-23A at 400 V) for versatile load switching.
• Three-pole configuration with base mounting for easy integration into enclosures.
• Direct rotary handle (black) included, providing clear ON/OFF indication and padlockable in OFF position for safety.
• High insulation voltage of 750 V and impulse withstand of 6 kV for reliable performance in demanding networks.
• Compact frame size G1, saving space in crowded panels.
• Long electrical and mechanical durability: 10,000 and 20,000 cycles respectively.
• Compliant with IEC 60947-3, ensuring global acceptance.

Specifications

• Brand: ABB
• Model: OT Plus OT25G1-3BS25
• MPN: 1SCA163417R1001
• EAN: 6417019931043
• Number of poles: 3
• Rated operational current (Ie): 25 A
• Rated operational voltage (Ue): 750 V AC
• Rated insulation voltage (Ui): 750 V
• Rated impulse withstand voltage (Uimp): 6 kV
• Rated short-time withstand current (Icw): 0.5 kA for 1 s
• Power loss per pole: 1.5 W
• Degree of protection: IP20 (terminals)
• Standards: IEC 60947-3
• Electrical durability: 10,000 cycles
• Mechanical durability: 20,000 cycles
• Terminal type: Screw terminals
• Main circuit terminal capacity: 1.5 - 10 mm²
• Operating temperature range: -25 to +70 °C
• Product series: OT Plus
• Actuator type: Direct rotary handle
• Frame size: G1

Tips

When installing, ensure the switch is mounted on a flat surface with adequate clearance for handle operation. Use appropriate cable lugs for the screw terminals and torque to manufacturer specifications. For safety, always verify the switch is in the OFF position and padlocked before performing maintenance on downstream equipment.