OTM800E4CM110V ABB 800A 4-Pole Motorised Changeover Switch 110V

Why Choose the ABB OTM800E4CM110V Motorised Changeover Switch?

The ABB OTM800E4CM110V is a heavy-duty 800 A four-pole motorised changeover switch designed for controlled transfer between two electrical power sources. Part of the ABB OT motorised changeover switch range, it combines high-current switching performance with an integrated motor operator for remote source selection in demanding industrial and commercial electrical distribution systems.

The OTM800E4CM110V provides I-0-II open-transition changeover operation, giving source I, disconnected 0 and source II positions while maintaining separation between the two supplies during transfer. Its integrated motor operator operates from 110–125 V AC/DC, while ABB supplies a handle for manual operation, terminal bolt hardware and male connectors for the control circuits.

With a rated current of 800 A, a four-pole configuration and a rated power of 550 kVA at 400 V, the OTM800E4CM110V is engineered for substantial power-transfer duties. Its AC-23 switching capability reaches 450 kW at 400 V, making it suitable for mains/generator, standby and alternative supply changeover systems.

Key Advantages

• Heavy-duty 800 A motorised changeover switching for high-current electrical distribution.
• Four-pole configuration enables four conductors to be switched during source transfer.
• 110–125 V AC/DC motor operator enables remote electrical source selection.
• I-0-II open-transition operation provides a defined disconnected position between the two sources.
• 550 kVA rated power at 400 V for demanding distribution applications.
• 450 kW switching capability at 400 V for AC-23 applications.
• Manual operating handle provides local switching capability when required.
• ABB OT construction supports integration into industrial switchboards and power distribution assemblies.

Key Features

• ABB OT motorised changeover switch range.
• 800 A rated current.
• 4-pole switching configuration.
• 110–125 V AC/DC motor operating voltage.
• I-0-II open-transition switching.
• 800 A AC-21A rated current at 400 V.
• 800 A AC-23 rated current at 400 V.
• 450 kW AC-23 switching power at 400 V.
• 720 A AC-31B rated current at 415 V.
• 650 A AC-33B rated current at 415 V.
• 20 kA rated short-time withstand current.
• 1000 V rated operational voltage.
• Integrated motor drive with manual operating capability.

Reliable Motorised Power Source Changeover

Motorised changeover switches such as the ABB OTM800E4CM110V provide a controlled method of transferring substantial electrical loads between two independent power sources. The I-0-II open-transition arrangement provides a disconnected 0 position between source I and source II, preventing the two supplies from being simultaneously connected during normal changeover operation.

The integrated 110–125 V AC/DC motor operator enables remote switching from a suitable transfer-control or power-management system, while the supplied handle provides local manual operation when required. Combined with its 800 A rating, four-pole construction and 450 kW AC-23 capability at 400 V, the OTM800E4CM110V provides a robust solution for demanding source-transfer installations.

Typical Applications

• Mains and generator power source changeover systems.
• Standby and emergency power distribution.
• Industrial electrical switchboards.
• Commercial and infrastructure power distribution systems.
• Alternative electrical supply selection.
• Four-pole high-current installations requiring remote motorised source transfer.