OTM200E3WCM24D ABB 200 A 3-Pole 24 V DC Motorised Change-Over Switch

Why Choose the ABB OTM200E3WCM24D Motorised Change-Over Switch?

The ABB OTM200E3WCM24D is a robust 200 A three-pole motorised change-over switch designed for controlled switching between two electrical power sources. As part of the ABB OT Change-over Switches product group, it combines ABB's established OT switching technology with an integrated motor operator for industrial, commercial and standby power distribution applications.

The OTM200E3WCM24D provides I-O-II open-transition operation, creating a defined OFF position between the two source positions so that one supply is disconnected before the alternative supply is connected. Its integrated 24 V DC motor operator enables remote electrical switching, while a handle is included for manual operation when required.

With a rated operational current of 200 A, a three-pole configuration and an AC-23A operational power rating of 110 kW at 400 V, the OTM200E3WCM24D is suited to demanding power transfer applications. The W version features extended phase distance, while its base-mounted construction supports practical integration into switchboards and electrical distribution equipment.

Key Advantages

• Integrated motorised change-over switching for remote power source selection.
• 200 A three-pole configuration for simultaneous switching of three conductors.
• Integrated 24 V DC motor operator for low-voltage control systems.
• I-O-II open-transition operation provides a defined OFF position between sources.
• Extended phase distance design for increased spacing between phases.
• Supports both motorised and manual operation.
• 200 A AC-21A, AC-22A and AC-23A ratings at specified operating voltages.
• 110 kW AC-23A operational power at 400 V.

Key Features

• ABB OT Change-over Switches product group.
• 200 A rated operational current.
• 3-pole configuration.
• Integrated 24 V DC motor drive.
• I-O-II open-transition change-over operation.
• Extended phase distance construction.
• 200 A AC-21A / AC-22A rating at 500 V and 690 V.
• 200 A AC-23A rating at 380–415 V, 500 V and 690 V.
• 110 kW AC-23A operational power at 400 V.
• 1000 V rated operational and insulation voltage.
• 12 kV rated impulse withstand voltage.
• 8 kA rms short-time withstand current for 1 s.
• Handle included for manual operation.

Reliable 24 V DC Motorised Power Source Change-Over

Motorised change-over switches such as the ABB OTM200E3WCM24D enable electrical power sources to be selected remotely without requiring routine manual switching at the electrical panel. The integrated 24 V DC motor mechanism operates the switch while the I-O-II open-transition arrangement maintains a defined electrical break between the two sources during transfer.

The OTM200E3WCM24D combines a 200 A rating with three-pole switching and extended phase distance. A handle for manual operation is included, together with a bolt kit with nuts and washers for the terminals and male connectors for the control circuits, providing a practical package for switchboard installation and maintenance.

Typical Applications

• Motorised mains-to-generator change-over systems.
• Standby and alternative power supply switching.
• Industrial electrical distribution systems.
• Commercial building power distribution.
• Switchboards and electrical distribution panels.
• Remote 24 V DC controlled source-selection systems.