OT63G2-4BSN2 ABB OT Plus Isolator 63A 4 Pole. G2 Frame Size. Screw Terminals IP20 1SCA162559R1001

The OT63G2-4BSN2 is ABB's 63A 4-pole OT Plus isolator switch disconnector featuring G2 frame size construction and screw terminal connections. This industrial-grade isolation switch provides reliable electrical disconnection for 4-pole circuits up to 63A, making it an essential safety component for motor control panels, distribution boards, and industrial installations.

The ABB OT Plus isolator delivers enhanced operational flexibility with adjustable fourth-pole timing technology, allowing engineers to configure simultaneous switching or early-make/late-break operation within the same device. With its compact G2 frame size and IP20 protection rating, this switch disconnector combines robust performance with space-efficient design for modern electrical installations.

Key Features

• Adjustable Fourth-Pole Timing: Enables both simultaneous and early-make/late-break switching configurations, providing operational flexibility for complex control circuits and reducing the need for multiple switch types in your inventory.
• 63A Current Rating: Handles continuous currents up to 63A with 30kW rated power (AC-23A), making it suitable for medium-power motor control and distribution applications.
• Versatile Cable Connections: Accommodates flexible copper cables from 1.5-35mm² and solid copper cables 1.5-6mm² with 2Nm tightening torque, ensuring secure connections across various installation requirements.
• Dual Mounting Options: Supports both base mounting and DIN rail installation with the same unit, providing installation flexibility for panel builders and maintenance teams.
• Padlockable Handle System: Direct mounted handle with padlock capability ensures safety isolation procedures, while maintaining full compatibility with existing OT shaft systems and external operating handles.
• Compact G2 Frame: Measures just 70mm wide × 91.5mm high × 73mm deep, maximising panel space utilisation while maintaining robust 4-pole switching capability.
• IP20 Protection Rating: Provides finger-safe protection against accidental contact with live parts, meeting standard electrical panel safety requirements.

Applications

This 4-pole isolator switch is designed for industrial motor control panels, distribution switchboards, and machinery installations where reliable electrical isolation is critical. Common applications include motor starter panels, conveyor systems, pump control stations, and industrial process equipment requiring emergency disconnection capability. The adjustable fourth-pole timing makes it particularly valuable in control circuits where auxiliary contacts need different switching sequences, such as in motor control applications with brake circuits or feedback systems.

Standards and Sustainability

The OT63G2-4BSN2 meets IEC 60947-3 standards for switch-disconnectors and UL 60947-4-1 certification for North American applications, ensuring global compliance for international projects. The IP20 protection rating provides appropriate safety levels for standard electrical panel installations. The unit's compact design and dual mounting capability contribute to efficient panel space utilisation and reduced material requirements.

Manufactured by ABB in Finland with order code 1SCA162559R1001.

Frequently Asked Questions

What cable sizes can be connected to the OT63G2-4BSN2 isolator?

This ABB isolator accommodates flexible copper cables from 1.5mm² to 35mm² and solid copper cables from 1.5mm² to 6mm². The screw terminals require a tightening torque of 2Nm for secure connections. This range covers most industrial motor and distribution circuit requirements up to the 63A rating.

How does the adjustable fourth-pole timing work and when would I use it?

The adjustable fourth-pole timing allows you to configure the fourth pole to switch either simultaneously with the main poles or in early-make/late-break sequence. This is particularly useful in motor control applications where you need auxiliary circuits (like brake controls or feedback signals) to operate at different times from the main power circuit, eliminating the need for separate auxiliary switches.

What are the mounting dimensions and can it fit standard DIN rail?

The OT63G2-4BSN2 measures 70mm wide × 91.5mm high × 73mm deep and weighs just 0.32kg. It supports both base mounting with screws and standard DIN rail mounting, making it adaptable to various panel layouts. The compact G2 frame size maximises space efficiency in crowded control panels.

Is this isolator suitable for motor switching applications?

Yes, with a rated power of 30kW (AC-23A) and 63A continuous current rating, this 4-pole isolator is well-suited for motor isolation applications. However, it's designed primarily as an isolator/switch disconnector for safety isolation rather than frequent operational switching. For regular motor starting and stopping, consider combining it with appropriate contactors or motor starters.

Where can I buy the ABB OT63G2-4BSN2 switch?

The ABB OT63G2-4BSN2 OT Plus Switch is available at CSE Distributors in the UK. With family values and national reach, CSE is still run by the same family after more than 50 years, and we treat every customer, large or small, as a long-term partner. CSE is an official ABB distributor in the UK providing genuine ABB products with full warranty support. CSE Distributors has hundreds of positive reviews and is a go-to technical stockist for control panel builders and OEMs involved in the electrical automation and controls industry across the UK.

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

The OT Plus range, including the OT63G2-4BSN2, features the advanced adjustable fourth-pole timing capability that allows two different switching sequences within the same device. It also maintains full compatibility with existing OT shaft systems and external handles, making it a direct upgrade path while providing enhanced functionality for complex control applications.