OT63ML3 ABB 63 A 3-Pole Switch Disconnector for 45 mm Distribution Boards

Why Choose the ABB OT63ML3 63 A 3-Pole Switch Disconnector?

The ABB OT63ML3, order code 1SCA022530R5770, is a compact 63 A 3-pole switch disconnector designed for reliable switching and isolation in low-voltage distribution systems. As part of the proven ABB OT switch-disconnector range, it is particularly suited to distribution boards and control panels where a compact modular device is required.

Designed for a standard 45 mm distribution-board opening, the OT63ML3 provides three-pole isolation in a compact format suitable for DIN-rail and panel applications. Protected terminal clamps provide IP20 front protection, while screw terminals accommodate copper conductors from 1.5–35 mm². The device is supplied without a shaft or handle, allowing the operating arrangement to be selected to suit the installation.

The OT63ML3 has a 63 A enclosed thermal current rating and an open-air thermal current of 80 A. At 380–415 V AC it provides an AC-22A operational current of 80 A and an AC-23A operational current of 75 A, making it a capable compact isolating switch for industrial and commercial distribution applications.

Key Advantages

• Compact 63 A 3-pole switch disconnector for distribution boards and electrical panels.
• Designed for a standard 45 mm distribution-board opening.
• 3-pole configuration for three-phase circuit switching and isolation.
• 80 A open-air thermal current with a 63 A fully enclosed thermal rating.
• 75 A AC-23A operational current at 380–415 V AC.
• Compact modular construction helps conserve valuable panel space.
• IP20 front protection with protected terminal clamps.
• Accepts copper conductors from 1.5–35 mm².
• High mechanical durability for dependable repetitive operation.

Key Features

• ABB OT switch-disconnector series.
• 63 A rated enclosed current.
• 3-pole configuration.
• Front-operated switching arrangement.
• Suitable for a standard 45 mm opening.
• 80 A AC-22A rating at 380–415 V AC.
• 75 A AC-23A rating at 380–415 V AC.
• 22 kW AC-23A operational power at 400–415 V AC.
• 750 V rated insulation voltage.
• 8 kV rated impulse withstand voltage.
• IP20 front protection.
• Screw terminals for secure conductor connections.
• Handle and shaft not included.
• Designed in accordance with IEC 60947-3.

Compact Isolation for Distribution Boards and Control Panels

Switch disconnectors such as the ABB OT63ML3 provide a reliable means of manually switching and isolating electrical circuits for operation and maintenance. Its compact three-pole construction and compatibility with a standard 45 mm distribution-board opening make it particularly useful where installation space is limited.

The OT63ML3 combines a 63 A enclosed rating with strong utilisation-category performance and secure screw-terminal connections. Its protected terminals, compact modular construction and compliance with IEC 60947-3 make it suitable for integration into modern industrial and commercial low-voltage distribution systems.

Typical Applications

• DIN distribution boards and electrical panels.
• Three-phase circuit isolation.
• Industrial control panels.
• Commercial electrical distribution systems.
• Machinery and equipment isolation.
• Building services electrical systems.
• OEM control and distribution assemblies.
• Maintenance and local isolation applications.