abb Automatic transfer switch 63 amps with 3 Poles

Why Choose the ABB OTM63F3C20D400C Automatic Transfer Switch?

The ABB OTM63F3C20D400C is a compact and highly reliable automatic transfer switch (ATS) designed for secure power source switching in industrial, commercial and critical infrastructure applications. As part of the advanced ABB Compact ATS series, it provides dependable automatic transfer between primary and backup power supplies while ensuring safe and continuous electrical operation.

This motor-operated automatic transfer switch combines ABB’s proven switch-disconnector technology with integrated automatic control functionality. Its compact design simplifies installation inside control panels and distribution boards while helping maintain operational continuity during mains failures or generator startup conditions.

With a rated operational current of 63 A, a 3-pole configuration, and a 380–415 V AC motor operating voltage, the OTM63F3C20D400C is ideal for commercial buildings, industrial machinery, generator systems and power distribution installations requiring automatic source transfer functionality. Its open transition switching operation provides reliable transfer between power sources in demanding electrical environments.

Key Advantages

• Compact automatic transfer switch for reliable backup power switching.
• 63 A operational current rating suitable for industrial and commercial systems.
• 3-pole open transition switching for automatic source transfer.
• Integrated motor-operated mechanism with fixed operating parameters.
• Suitable for generator backup and critical power continuity applications.
• Compact enclosure design simplifies switchboard integration.

Key Features

• ABB Compact ATS automatic transfer switch series.
• 63 A rated operational current.
• 3-pole automatic transfer configuration.
• 380–415 V AC motor operating voltage.
• Open transition type 1-0-2 switching.
• Self-supplied control unit with fixed operating parameters.
• Base mounting or DIN rail mounting flexibility.
• Direct-mounted handle for manual operation capability.

Technical Specifications

• Manufacturer: ABB
• Series: Compact ATS
• Model: OTM63F3C20D400C
• Product type: Automatic transfer switch
• Rated operational current: 63 A
• Number of poles: 3P
• Rated operational voltage: 380–415 V AC
• Motor operational voltage: 380–415 V AC
• Rated operational power AC-23A: 30 kW
• Rated insulation voltage: 800 V
• Rated impulse withstand voltage: 8 kV
• Rated short-time withstand current: 2.5 kA for 1 second
• Transition type: Open transition
• Controller type: 20D
• Protection rating: Front IP20
• Mounting type: Base mounting or DIN rail mounting
• Terminal type: Screw terminals
• Dimensions (W × H × D): approx. 233 × 103 × 131 mm
• Weight: approx. 1.75 kg
• Standards: IEC 60947-3

Reliable Automatic Power Transfer for Critical Installations

Automatic transfer switches such as the ABB OTM63F3C20D400C are designed to ensure continuous electrical supply by automatically switching between mains and backup power sources. This helps reduce downtime and protects critical electrical systems during supply interruptions or maintenance operations.

The ABB Compact ATS range is widely used by electrical engineers, OEM manufacturers and panel builders due to its compact dimensions, dependable switching performance and simplified installation. Its motor-operated mechanism provides consistent and secure transfer functionality for industrial and commercial power systems.

Typical Applications

• Commercial building backup power systems.
• Industrial machinery and process systems.
• Generator transfer and standby power installations.
• Power distribution panels and switchboards.
• HVAC and building services equipment.
• Critical infrastructure and utility applications.

Trusted by Electrical Engineers Worldwide

ABB Compact ATS transfer switches are trusted by industrial engineers, panel builders and facility managers for reliable automatic power transfer, compact installation and dependable long-term operation.