ABB ot125m3 125 amp 3 pole change-over switch

Why Choose the ABB OT125M3 Switch Disconnector?

The ABB OT125M3 is a compact and reliable 3-pole modular switch disconnector designed for safe manual isolation of electrical circuits in distribution boards, industrial control panels and low voltage power systems. As part of the proven ABB OT Series, it provides dependable switching performance for electricians, panel builders and OEM machine builders requiring compact circuit isolation.

This front operated, non-fusible switch disconnector is designed for base mounting and DIN rail mounting, making it suitable for distribution boards and control panels where reliable manual isolation is required. Its protected clamp terminals, compact modular body and robust construction make it well suited to installations where space efficiency, safe operation and long service life are essential.

With a 125 A rated operational current, 3-pole configuration and modular format, the OT125M3 is ideal for three-phase circuit isolation, control panel switching and maintenance isolation applications. The operating handle and shaft are supplied separately, allowing the installation to be configured around the enclosure and panel layout.

Key Advantages

• Compact 3-pole switch disconnector for low voltage isolation.
• 125 A rated operational current for control and distribution applications.
• DIN rail mountable and base mountable for flexible installation.
• Front operated switching mechanism for convenient panel integration.
• Protected clamp terminals for secure wiring.
• Compatible with ABB handles, shafts and accessories for panel configuration.

Key Features

• ABB OT Series switch disconnector.
• 3-pole configuration.
• 125 A rated operational current.
• Front operated switching mechanism.
• DIN rail mountable modular design.
• Suitable for distribution boards and industrial control panels.
• Protected clamp terminals for safe connection.
• Handle and shaft supplied separately for installation flexibility.

Technical Specifications

• Manufacturer: ABB
• Series: OT Switch Disconnectors
• Model: OT125M3
• Product type: Switch disconnector / non-fusible disconnect switch
• Rated operational current: 125 A
• Number of poles: 3
• Rated operational voltage: Up to 750 V AC
• Rated insulation voltage: 750 V
• Rated impulse withstand voltage: 8 kV
• Operation: Front operated
• Mounting type: Base mounting / DIN rail mountable
• Terminal type: Protected clamp terminals
• Protection rating: IP20 front
• Standards: IEC 60947-3
• Handle and shaft: Not included
• Suitable use: Three-phase circuit isolation

Compact Isolation for Distribution Boards and Panels

Switch disconnectors such as the ABB OT125M3 provide a safe and dependable way to isolate electrical circuits during servicing, inspection and maintenance. By allowing the supply to be manually disconnected, they help protect personnel and equipment while supporting safe working procedures across low voltage installations.

The OT125M3 is particularly useful where a compact modular isolator is required in a distribution board, switchboard or control panel. Its 3-pole format, DIN rail mounting capability and front operated design make it a practical choice for three-phase isolation in industrial and commercial electrical assemblies.

Typical Applications

• Industrial control panels and switchboards.
• Distribution boards and low voltage assemblies.
• Three-phase circuit isolation.
• Machine isolation and maintenance switching.
• Motor control centres and automation cabinets.
• Panel building and OEM machinery applications.

Trusted by Panel Builders Worldwide

ABB OT Series switch disconnectors are widely used by electrical engineers, panel builders and machine builders to provide safe isolation, reliable switching and compact installation in industrial and commercial low voltage systems.