OT1250E12P ABB 1250 A 3-Pole Isolator Switch

Why Choose the ABB 1SCA022871R5790 OT1250E12P Isolator Switch?

The ABB 1SCA022871R5790, order code OT1250E12P, is a heavy-duty 1250 A, 3-pole switch-disconnector / isolator switch designed for dependable high-current switching and electrical isolation. As part of the ABB 311027-OT Switches product group, it belongs to ABB's high-performance OT range for industrial power distribution, switchboards and electrical equipment.

The OT1250E12P is a front-operated, base-mounted 3-pole switch-disconnector with its operating mechanism positioned between the poles. It is supplied complete with a black ON-OFF plastic pistol-grip handle, adjustable operating shaft and terminal bolt kit, providing a practical complete operating arrangement for integration into industrial switchboards and distribution assemblies.

With an open-air thermal current of 1250 A and rated operational currents of 1250 A AC-22A / 1250 A AC-23A at 400–415 V, the OT1250E12P is engineered for demanding switching duties. It also provides a 50 kA short-time withstand current for 1 s, a rated operational voltage of up to 1000 V and 710 kW AC-23A operational power at 400–415 V.

Key Advantages

• Heavy-duty 1250 A isolator switch for high-current industrial applications.
• 3-pole configuration for three-phase switching and electrical isolation.
• 1250 A AC-22A / AC-23A rating at 400–415 V.
• 50 kA short-time withstand current for 1 s.
• Supplied complete with black pistol-grip handle, adjustable shaft and terminal bolt kit.
• Mechanism positioned between the poles for a practical front-operated switchboard arrangement.

Key Features

• ABB OT1250 high-performance switch-disconnector series.
• 1250 A rated current.
• 3-pole switching configuration.
• 1250 A AC-21A at 380–415 V.
• 1250 A AC-22A at 380–415 V.
• 1250 A AC-23A at 380–415 V.
• 710 kW AC-23A operational power at 400–415 V.
• 900 kW AC-23A operational power at 500 V.
• 1200 kW AC-23A operational power at 690 V.
• 1000 V rated operational and insulation voltage.
• 12 kV rated impulse withstand voltage.
• 50 kA Icw for 1 s.
• Front-operated, base-mounted construction.
• Operating mechanism positioned between the poles.
• Black ON-OFF plastic pistol-grip handle included.
• Adjustable operating shaft included.
• Terminal bolt kit included.
• Handle padlockable in the OFF position.
• Door interlocking functionality for secure switchboard operation.

Mechanism 12 High-Current Isolation

Switch-disconnectors provide a dedicated means of manually switching and isolating electrical circuits from their power source. The ABB OT1250E12P combines a substantial 1250 A current capacity with three-pole switching and a mechanism positioned between the poles, providing a practical arrangement for high-current three-phase power distribution systems.

Unlike versions supplied without operating accessories, the OT1250E12P includes the handle, adjustable shaft and terminal bolt kit as standard. The IP65 handle is padlockable in the OFF position and supports door interlocking, while the switch's 50 kA Icw for 1 s and high AC-23A switching performance make it suitable for demanding industrial isolation duties.

Typical Applications

• High-current industrial power distribution.
• Main and sub-main electrical isolation.
• Industrial switchboards and distribution assemblies.
• Large machinery and production equipment.
• High-power motor and load switching.
• Manufacturing and process installations.
• Power generation and infrastructure systems.