OT100G2-4BSN2 ABB OT Plus Isolator 100A 4 Pole. G2 Frame Size. Screw Terminals IP20 1SCA162557R1001

The OT100G2-4BSN2 is ABB's advanced 100A 4-pole isolator switch from their OT Plus range, engineered to provide reliable electrical isolation and switching in industrial and commercial applications.

This high-performance isolator switch delivers safe electrical isolation for circuits up to 100A, making it ideal for protecting equipment and enabling maintenance work. The G2 frame size offers a compact footprint while maintaining robust performance, and the innovative adjustable fourth-pole timing feature provides exceptional flexibility in switching operations.

Key Features

• Adjustable Fourth-Pole Timing: Enables two different time offsets (simultaneous or early-make/late-break) within the same switch, providing greater control over switching sequences and reducing electrical stress on connected equipment.
• Padlockable Direct Mounted Handle: Enhances safety through lockout/tagout procedures while maintaining full compatibility with existing OT shafts and external handles, protecting your investment in existing infrastructure.
• Versatile Cable Compatibility: Accommodates flexible copper cables from 1.5-35mm² and solid copper cables from 1.5-6mm², providing installation flexibility across various applications.
• Dual Mounting Options: Base and DIN rail mounting capabilities allow installation in standard panels or rail systems, adapting to different enclosure configurations.
• Screw Terminal Connections: Reliable screw terminals with 2Nm tightening torque ensure secure connections and simplified maintenance procedures.
• 45kW Power Rating: AC-23A rated power capacity of 45kW handles substantial loads in industrial applications.
• Compact G2 Frame: Dimensions of 91.5mm height, 70mm width, and 73mm depth maximise panel space utilisation while maintaining 100A capacity.

Applications

The OT100G2-4BSN2 isolator switch is designed for industrial control panels, motor control centres, and distribution boards where reliable electrical isolation is critical. Its 4-pole configuration makes it particularly suitable for three-phase systems with neutral switching requirements, commonly found in manufacturing facilities, commercial buildings, and industrial automation systems. The adjustable fourth-pole timing feature is especially valuable in applications requiring controlled switching sequences, such as motor starting circuits and sensitive electronic equipment protection.

Standards and Compliance

This isolator switch meets stringent international standards including IEC60947-3 for switch-disconnectors and UL60947-4-1 for North American applications. The IP20 protection rating ensures reliable operation in standard electrical enclosures, providing protection against solid objects larger than 12mm. These certifications guarantee safe operation and regulatory compliance across global markets.

Manufactured by ABB in Finland, order code: OT100G2-4BSN2 (alternate code: 1SCA162557R1001).

Frequently Asked Questions

What cable sizes can be connected to the OT100G2-4BSN2 isolator switch?

The OT100G2-4BSN2 accepts flexible copper cables ranging from 1.5mm² to 35mm² and solid copper cables from 1.5mm² to 6mm². The screw terminals should be tightened to a torque of 2Nm to ensure secure connections and optimal electrical performance.

How does the adjustable fourth-pole timing feature work?

The adjustable fourth-pole timing allows you to configure the switch for either simultaneous operation (all poles switch together) or early-make/late-break operation (the fourth pole connects first and disconnects last). This feature is particularly useful in three-phase systems where you need controlled switching of the neutral conductor or specific sequencing for sensitive equipment protection.

What mounting options are available for this ABB isolator switch?

The OT100G2-4BSN2 offers both base mounting and DIN rail mounting options, providing flexibility for different panel configurations. The compact G2 frame size (91.5mm x 70mm x 73mm) fits standard electrical enclosures, and the direct mounted handle is padlockable for safety lockout procedures.

Is the OT100G2-4BSN2 suitable for motor switching applications?

Yes, with an AC-23A power rating of 45kW, this isolator switch is well-suited for motor control applications up to 100A. The robust construction and compliance with IEC60947-3 standards ensure reliable performance in motor switching duties, while the adjustable fourth-pole timing can provide additional protection for motor circuits.

What's the difference between the OT Plus range and standard OT switches?

The OT Plus range, including the OT100G2-4BSN2, features enhanced functionality such as adjustable fourth-pole timing and improved compatibility with existing OT accessories. The padlockable direct mounted handle maintains compatibility with existing OT shafts and external handles, allowing easy upgrades while preserving your investment in current infrastructure.