OT400E04CLK ABB 400 A 4-Pole Closed-Transition Manual Changeover Switch

Why Choose the ABB OT400E04CLK 400 A 4-Pole Closed-Transition Manual Changeover Switch?

The ABB OT400E04CLK is a heavy-duty 400 A 4-pole manual changeover switch designed for closed-transition source switching in low-voltage power distribution systems. Part of the ABB OT Changeover Switches range, it provides robust manual control for industrial switchboards, distribution equipment and specialised power-transfer applications.

The OT400E04CLK uses an I-I+II-II operating sequence, providing closed-transition changeover with an intermediate I+II position. This differs from conventional I-O-II open-transition switches because the operating sequence incorporates a position in which both switching paths are closed rather than passing through an OFF position.

With its 400 A rating and 4-pole configuration, the OT400E04CLK is designed for substantial four-conductor power systems. This version features a direct-mounted handle, allowing manual operation directly at the switch without a separate door-coupled shaft arrangement.

Key Advantages

• Heavy-duty 400 A manual changeover switch for demanding power distribution systems.
• 4-pole configuration for simultaneous switching of four conductors.
• I-I+II-II closed-transition operation with an intermediate I+II position.
• Designed for applications specifically requiring closed-transition manual changeover.
• Direct-mounted handle provides convenient local operation at the switch.
• Robust ABB OT construction for industrial switchboard applications.
• Suitable for specialised source-transfer and power-distribution arrangements.

Key Features

• ABB OT Changeover Switches range.
• 400 A rated current.
• 4-pole switching configuration.
• Manual I-I+II-II operating sequence.
• Closed-transition changeover arrangement.
• Intermediate I+II position.
• Direct-mounted operating handle.
• Designed for low-voltage power distribution systems.
• Manual source-selection functionality.
• Heavy-duty construction for industrial electrical installations.

Closed-Transition Manual Power Source Changeover

The ABB OT400E04CLK is designed around an I-I+II-II closed-transition operating sequence. During manual changeover, the switch incorporates an intermediate I+II position rather than the OFF position associated with I-O-II open-transition changeover switches.

Its 400 A rating, four-pole construction and direct-mounted handle make the OT400E04CLK a practical solution for substantial electrical distribution systems specifically engineered for this type of manual closed-transition switching. The direct handle arrangement is particularly suited to applications where operation directly at the switch is required.

Typical Applications

• Closed-transition manual power source transfer systems.
• Industrial low-voltage distribution switchboards.
• Four-pole electrical source-transfer systems.
• Industrial plant power distribution equipment.
• Commercial and infrastructure electrical installations.
• Specialised systems requiring I-I+II-II manual changeover operation.