ABB ot125f3c 125 amp 3 pole change-over switch

Why Choose the ABB OT125F3C Change-Over Switch?

The ABB OT125F3C is a compact and reliable 3-pole manual change-over switch designed for safe transfer switching between two low voltage power sources. As part of the proven ABB OT Series, it provides dependable switching performance for industrial control panels, distribution boards, generator changeover systems and machinery applications.

This 125 A open transition change-over switch is engineered for applications where loads need to be manually transferred from one supply to another. Its robust non-fusible construction, compact design and flexible mounting options make it well suited to demanding industrial environments where reliability, safety and long service life are essential.

With a 125 A current rating, 3-pole configuration and suitability for low voltage transfer applications, the OT125F3C is ideal for standby supply selection, generator transfer panels and industrial distribution systems. The operating handle and shaft are supplied separately, allowing the installation to be configured to suit the enclosure depth and panel layout.

Key Advantages

• Reliable 3-pole manual change-over switch for industrial power transfer.
• 125 A rated current for low voltage applications.
• Open transition switching for transfer between two supplies.
• Suitable for DIN rail or panel mounting.
• Non-fusible construction for use in distribution and control panels.
• Compatible with ABB handles, shafts and accessories for flexible installation.

Key Features

• ABB OT Series change-over switch.
• 3-pole configuration.
• 125 A rated operational current.
• Manual transfer switch for source selection applications.
• Open transition change-over operation.
• DIN rail and panel mountable design.
• Suitable for generator, mains and standby supply switching.
• Handle and shaft supplied separately for installation flexibility.

Technical Specifications

• Manufacturer: ABB
• Series: OT Change-Over Switches
• Model: OT125F3C
• Product ID: 1SCA105037R1001
• EAN: 6417019391670
• Product type: Manual change-over switch / non-fusible transfer switch
• Rated operational current: 125 A
• Number of poles: 3
• Rated operational voltage: Up to 600 V AC
• Transition type: Open transition
• Operation: Manual front operation
• Mounting type: DIN rail / panel mounting
• Terminal type: Lugs / clamp terminals
• Protection rating: IP20
• Standards: IEC 60947-3 / UL 98
• Handle and shaft: Not included
• Suitable use: Change-over switching between two supplies

Reliable Manual Transfer Switching for Industrial Panels

Change-over switches such as the ABB OT125F3C provide a dependable method of manually transferring a load between two power sources. This is commonly required where a main supply and an alternative supply, such as a generator or backup feed, must be selected safely and clearly.

The OT125F3C uses open transition operation, meaning the first supply is disconnected before the second supply is connected. This supports safe transfer switching in low voltage systems while helping protect equipment from unintended source overlap.

Typical Applications

• Generator changeover panels.
• Main and standby power supply selection.
• Industrial distribution boards.
• Control panels and switchboards.
• Machine supply transfer applications.
• Low voltage power distribution systems.

Trusted by Panel Builders Worldwide

ABB OT Series change-over switches are widely used by electrical engineers, generator panel builders and industrial installers to provide reliable manual transfer switching, safe source selection and dependable performance in low voltage power systems.