OTM1250E3CM24D ABB 1250 A 3-Pole Motorised Changeover Switch 24 V DC

Why Choose the ABB OTM1250E3CM24D Motorised Changeover Switch?

The ABB OTM1250E3CM24D is a heavy-duty motorised changeover switch designed for reliable switching between two electrical power sources in industrial and commercial power distribution systems. As part of the ABB OT motorised changeover switch range, it combines a high current rating with electrically operated changeover functionality for demanding power switching applications.

This open-transition changeover switch provides three-pole switching and is designed for applications where dependable transfer between alternative supplies is required. Its motorised mechanism enables remote electrical operation, while a supplied handle provides manual operation when required, making the unit suitable for switchboards, distribution panels and power transfer installations.

With a rated current of 1250 A, a 3-pole configuration and a 24 V DC motor operating voltage, the OTM1250E3CM24D provides a robust solution for high-current changeover duties. ABB identifies the unit by product ID 1SCA113671R1001.

Key Advantages

• Heavy-duty motorised changeover switch for high-current power distribution.
• 1250 A rated current for demanding electrical installations.
• 3-pole configuration for three-phase switching applications.
• 24 V DC motor operating voltage for electrically controlled changeover.
• Open-transition switching arrangement for transfer between alternative power sources.
• Manual operating handle supplied for local operation when required.
• Designed for integration into industrial switchboards and power distribution assemblies.

Key Features

• ABB OT motorised changeover switch range.
• 1250 A rated current.
• 3 poles.
• 24 V DC motor voltage.
• Motorised operating mechanism for remote changeover control.
• Manual operating capability using the supplied handle.
• Open-transition changeover operation.
• Supplied with terminal bolt kit, nuts and washers.
• Male connectors supplied for control circuits.
• Storage clip provided for the manual operating handle.

Reliable Motorised Power Changeover

Motorised changeover switches are used to transfer electrical loads between alternative power sources without requiring routine manual switching at the switchboard. The ABB OTM1250E3CM24D provides an electrically operated changeover mechanism suitable for integration with control circuits and external transfer control systems.

Its open-transition arrangement provides defined changeover between supply positions, while the manual operating handle gives operators an alternative means of switching when local manual control is required. The robust OT construction makes the unit suitable for high-current power distribution and industrial infrastructure.

Typical Applications

• Main and standby power supply changeover systems.
• Generator and mains supply switching installations.
• Industrial low-voltage distribution switchboards.
• Commercial building power distribution systems.
• Manufacturing and process plant electrical systems.
• Infrastructure and critical power distribution installations.