OTM2500E4CM24D ABB 2500 A 4-Pole Motorised Changeover Switch 24 V DC

Why Choose the ABB OTM2500E4CM24D Motorised Changeover Switch?

The ABB OTM2500E4CM24D is a heavy-duty motorised changeover switch designed for reliable transfer between alternative electrical power sources in high-current industrial and commercial distribution systems. As part of the ABB OT motorised changeover switch range, it combines a substantial 2500 A current rating with electrically operated source changeover for demanding low-voltage installations.

This four-pole changeover switch features an integrated motor operator and is designed for open-transition source switching. Remote electrical operation simplifies integration into transfer control systems, while the supplied manual operating handle provides local switching capability when required.

With a rated current of 2500 A, a 4-pole configuration and a 24 V DC motor operating voltage, the OTM2500E4CM24D is engineered for substantial mains, generator and alternative supply changeover duties. Its four-pole construction enables simultaneous switching of three phases and neutral, making it suitable for installations requiring complete four-conductor source transfer.

Key Advantages

• Heavy-duty motorised changeover switch for high-current power distribution.
• 2500 A rated current for demanding electrical installations.
• 4-pole configuration supports simultaneous switching of three phases and neutral.
• 24 V DC motor operating voltage for integration with DC control systems.
• Open-transition operation for controlled transfer between alternative sources.
• 55 kA short-time withstand current supports demanding high-current installations.
• Manual operating handle and terminal bolt hardware supplied as standard.

Key Features

• ABB OT motorised changeover switch range.
• 2500 A rated current.
• 4-pole switching configuration.
• 24 V DC motor operating voltage.
• 1700 kVA rated power at 400 V.
• AC-21B utilisation category.
• 1000 V rated operational voltage.
• 55 kA rated short-time withstand current.
• Integrated motor drive for remote source switching.
• Manual operating handle and M12 × 60 mm bolt kit supplied as standard.

Reliable Motorised Power Changeover

Motorised changeover switches allow electrical loads to be transferred between alternative power sources through electrical control rather than requiring routine manual switching at the switchboard. The ABB OTM2500E4CM24D provides open-transition changeover functionality together with an integrated 24 V DC motor drive for remote source selection.

The four-pole construction supports simultaneous switching of three phases and neutral, while the high 2500 A rating makes the switch suitable for substantial distribution systems. ABB supplies the OTM2500E4CM24D with a manual operating handle, terminal bolt kit with nuts and washers, control-circuit connectors, a handle storage clip and spare fuses.

Typical Applications

• Main and standby power supply changeover systems.
• Generator and mains supply switching installations.
• High-current industrial low-voltage switchboards.
• Commercial and infrastructure power distribution systems.
• Manufacturing and process plant electrical systems.
• Critical power source transfer installations.
• Four-pole systems requiring switched-neutral changeover.