OTM630E4CM24D ABB 630A 4-Pole Motorised Changeover Switch 24V DC

Why Choose the ABB OTM630E4CM24D Motorised Changeover Switch?

The ABB OTM630E4CM24D is a heavy-duty 630 A four-pole motorised changeover switch designed for controlled transfer between two electrical power sources. As 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 industrial and commercial electrical distribution systems.

The OTM630E4CM24D provides I-0-II open-transition operation, giving source I, disconnected 0 and source II positions while preventing simultaneous connection of the two power sources. The switch incorporates a 24 V DC motor operator and is supplied with a direct-mounted handle for manual operation, terminal hardware and connectors for its control circuits.

With a rated current of 630 A, a four-pole configuration and 24 V DC motor operation, the OTM630E4CM24D is suited to mains/generator changeover, standby power distribution and alternative supply selection. Its AC-23A operational rating reaches 630 A at 380–415 V, with rated operational power of 355 kW at 400 V.

Key Advantages

• Heavy-duty 630 A motorised changeover switch for high-current power distribution.
• Four-pole configuration allows four conductors to be switched during source transfer.
• 24 V DC integrated motor operator enables remote electrical source selection.
• I-0-II open-transition operation provides a defined disconnected position between the two sources.
• Direct-mounted manual handle provides local operating capability when required.
• 355 kW AC-23A rated operational power at 400 V.
• Base-mounted design supports integration into switchboards and power distribution assemblies.

Key Features

• ABB OT motorised changeover switch range.
• 630 A rated current.
• 4-pole switching configuration.
• 24 V DC motor operating voltage.
• I-0-II open-transition switching.
• 630 A AC-21A / AC-22A rated operational current at 380–690 V.
• 630 A AC-23A rated operational current at 380–690 V.
• 355 kW AC-23A rated operational power at 380–415 V.
• 1000 V rated operational and insulation voltage.
• 12 kV rated impulse withstand voltage.
• 20 kA RMS short-time withstand current for 1 s.
• IP20 front protection.

Reliable Motorised Power Source Changeover

Motorised changeover switches such as the ABB OTM630E4CM24D provide a controlled method of transferring electrical loads between two independent power sources. The I-0-II open-transition arrangement introduces a disconnected position between source I and source II, ensuring the two supplies are not simultaneously connected during normal changeover operation.

The integrated 24 V DC motor operator enables remote switching from a suitable transfer-control or power-management system, while the direct-mounted handle provides local manual operation. Combined with its 630 A current rating and four-pole construction, the OTM630E4CM24D provides a robust solution for demanding power source transfer applications.

Typical Applications

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