OT80G2-4BSN2 ABB OT Plus Isolator 80A 4 Pole. G2 Frame Size. Screw Terminals IP20 1SCA162561R1001

The OT80G2-4BSN2 from ABB is an 80A 4-pole isolator switch disconnector from the OT Plus range, designed for reliable electrical isolation in industrial and commercial applications. This G2 frame size isolator provides enhanced safety and operational flexibility with its advanced fourth-pole timing adjustment feature and robust IP20-rated construction.

This OT Plus isolator switch disconnector delivers dependable electrical isolation for 80A circuits, making it ideal for motor control panels, distribution boards, and industrial machinery. The key advantage of this unit is its adjustable fourth-pole timing capability, which allows operators to configure simultaneous or early-make/late-break operation within the same switch, providing greater application flexibility than standard isolators.

Key Features

• Adjustable Fourth-Pole Timing: Enables two different time offsets (simultaneous or early-make/late-break) within one switch, allowing customisation for specific control circuit requirements and enhanced operational safety.
• 80A Current Rating: Handles substantial loads up to 45kW (AC-23A), making it suitable for medium-duty industrial motors and machinery applications.
• Flexible Cable Compatibility: Accepts both flexible copper cables (1.5-35mm²) and solid copper cables (1.5-6mm²), providing versatility for different wiring specifications and installation requirements.
• Dual Mounting Options: Base and DIN rail mounting capability offers installation flexibility in various panel configurations and space constraints.
• Padlockable Handle: Direct-mounted handle with lockout capability ensures safety compliance and prevents unauthorised operation, while maintaining compatibility with existing OT shaft systems.
• Compact G2 Frame: Space-efficient design (91.5 x 70 x 73mm) maximises panel space utilisation while delivering full 4-pole isolation performance.
• IP20 Protection: Provides appropriate protection against finger contact and solid objects larger than 12mm for standard panel installation environments.

Applications

The OT80G2-4BSN2 isolator is commonly used in motor control centres, industrial control panels, and machinery disconnect applications where reliable 4-pole isolation is required. Its adjustable fourth-pole timing makes it particularly suitable for applications requiring auxiliary contact control, such as motor starter interlocking, control circuit isolation, and equipment with complex start-up sequences. The 80A rating and 45kW power handling capability make it appropriate for medium-sized industrial motors, pumps, compressors, and conveyor systems.

Standards and Compliance

This ABB isolator meets IEC 60947-3 standards for switch-disconnectors and UL 60947-4-1 certification for North American markets, ensuring global compliance and safety. The IP20 rating provides standard protection for indoor panel mounting applications. The unit complies with international safety standards for electrical isolation equipment and is suitable for use in industrial environments requiring reliable disconnect functionality.

Manufactured by ABB in Finland, order code OT80G2-4BSN2 (alternate code 1SCA162561R1001).

Frequently Asked Questions

What cable sizes can I connect to the OT80G2-4BSN2 isolator?

The OT80G2-4BSN2 accepts 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 standard industrial wiring requirements for 80A applications.

How does the adjustable fourth-pole timing feature work?

The adjustable fourth-pole timing allows you to configure the auxiliary contacts to operate either simultaneously with the main contacts or with early-make/late-break timing. This flexibility enables the isolator to handle different control circuit requirements, such as maintaining control power during switching operations or ensuring proper sequencing in complex motor control applications.

Can this isolator be mounted on both DIN rail and panel base?

Yes, the OT80G2-4BSN2 offers both base mounting and DIN rail mounting options, providing installation flexibility for different panel configurations. The compact G2 frame size (91.5mm height, 70mm width, 73mm depth) fits standard panel layouts while the dual mounting capability accommodates various installation preferences and space constraints.

What is the maximum motor power this isolator can handle?

The OT80G2-4BSN2 has a rated power of 45kW under AC-23A utilisation category, which covers most medium-duty industrial motor applications. With its 80A current rating, it's suitable for motors, pumps, compressors, and similar equipment in this power range, providing reliable isolation for both the main power circuit and auxiliary control circuits.

Where can I buy the ABB OT80G2-4BSN2 switch?

The ABB OT80G2-4BSN2 OT Plus Switch is available to buy 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.

Is the handle compatible with existing OT range accessories?

Yes, the padlockable direct-mounted handle offers full compatibility with existing OT shaft systems and external handles. This backward compatibility allows you to use existing shaft extensions, external operating handles, and lockout accessories from previous OT installations, reducing retrofit costs and maintaining consistency across your electrical installations.