ABB OTOT16G1-4BSN2Plus 16 A 4-Pole Front-Operated Load Break Switch with Black Handle

In industrial and commercial electrical installations, safely isolating circuits for maintenance or emergency shutdown is critical. The ABB OTOT16G1-4BSN2Plus load break switch provides reliable manual switching and isolation for 4-pole circuits up to 16 A, ensuring operator safety and compliance with IEC 60947-3.

Who is it for

This switch is ideal for panel builders, electricians, and maintenance engineers who need a robust, front-operated disconnect switch for motor control centers, distribution boards, and machine control panels. It suits applications requiring frequent switching under load, such as HVAC systems, pumps, conveyors, and lighting circuits.

Main features

• Rated operational current of 16 A (AC-21A) and voltage up to 690 V AC, suitable for a wide range of industrial power circuits.
• 4-pole configuration for complete isolation of three-phase and neutral conductors.
• Front-operated with a black handle included, allowing convenient manual operation from the panel front.
• Base mounting design for secure installation on a DIN rail or mounting plate.
• Screw terminals accept solid or stranded conductors from 1.5 to 6 mm², ensuring secure and versatile wiring.
• High electrical durability: 10,000 operations under AC-21A load, reducing maintenance frequency.
• Mechanical durability of 20,000 operations for long service life.
• Rated impulse withstand voltage (Uimp) of 6 kV and insulation voltage (Ui) of 750 V for enhanced safety.
• IP20 protection on terminals; front can achieve IP65 when installed in an enclosure.

Specifications

• Rated Operational Current (Ie): 16 A
• Number of Poles: 4
• Rated Operational Voltage (Ue): 690 V AC
• Rated Impulse Withstand Voltage (Uimp): 6 kV
• Rated Insulation Voltage (Ui): 750 V
• Mounting Type: Base Mounting
• Operation Type: Front Operated
• Handle Type: Black Handle (Included)
• Shaft Type: Included (Standard Length)
• Terminal Type: Screw Terminals
• Degree of Protection: IP20 (Terminals), IP65 (Front with Enclosure)
• Rated Short-Circuit Making Capacity (Icm): 0.8 kA (690V)
• Rated Short-Circuit Withstand Current (Icw): 0.8 kA (1s)
• Electrical Durability: 10000 cycles (AC-21A)
• Mechanical Durability: 20000 cycles
• Ambient Air Temperature (Operation): -25 to +55 °C
• Ambient Air Temperature (Storage): -40 to +70 °C
• Standards: IEC 60947-3
• Product Series: OTOT Series
• Connection Capacity: 1.5 - 6 mm² (Solid/Stranded)

Tips

For optimal performance and safety, ensure the switch is installed by a qualified electrician in accordance with local regulations. When mounting in an enclosure, verify that the front seal achieves the required IP rating. Regularly inspect terminals for tightness and signs of wear, especially in high-vibration environments.