OTM160E4CM24D ABB 160 A 4-Pole 24 V DC Motorised Change-Over Switch

Why Choose the ABB OTM160E4CM24D Motorised Change-Over Switch?

The ABB OTM160E4CM24D is a heavy-duty 160 A four-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 OT switching platform with an integrated motor operator for industrial, commercial and standby power distribution applications.

The OTM160E4CM24D 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 operation, while the supplied handle provides manual operation when required.

With a rated operational current of 160 A, a four-pole configuration and an AC-23A operational power rating of 90 kW at 400 V, the OTM160E4CM24D is suited to demanding power transfer applications. The switch is supplied with a manual operating handle, terminal bolt kit, control-circuit connectors, handle storage clip and spare fuses for practical switchboard integration.

Key Advantages

• Integrated motorised change-over switching for remote source selection.
• 160 A four-pole configuration for simultaneous switching of four 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.
• Supports both motorised and manual operation.
• 160 A AC-21A and AC-22A rating at up to 690 V.
• 160 A AC-23A rating at up to 690 V.
• 90 kW AC-23A operational power at 400 V.

Key Features

• ABB OT Change-over Switches product group.
• 160 A rated operational current.
• 4-pole configuration.
• Integrated 24 V DC motor drive.
• I-O-II open-transition change-over operation.
• 160 A AC-21A / AC-22A rating at 500 V and 690 V.
• 160 A AC-23A rating at 380–415 V, 500 V and 690 V.
• 90 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.
• Supplied with handle for manual operation and terminal connection hardware.

Reliable 24 V DC Motorised Power Source Change-Over

Motorised change-over switches such as the ABB OTM160E4CM24D 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 its open-transition I-O-II arrangement maintains a defined electrical break between the two sources during transfer.

The OTM160E4CM24D combines motorised operation with manual operating capability for commissioning, maintenance and local intervention. ABB supplies the switch with a manual operating handle, bolt kit with nuts and washers for the terminals and male connectors for the control circuits, together with a handle storage clip and spare fuses.

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 source-selection and power transfer systems.