abb Automatic transfer switch 63 amps with 4 Poles

Why Choose the ABB OTM63F4CB21D400C Automatic Transfer Switch?

The ABB OTM63F4CB21D400C is a compact and robust automatic transfer switch (ATS) designed for secure and efficient switching between primary and standby power sources in industrial and commercial installations. As part of the advanced ABB Compact ATS range, it provides reliable automatic transfer functionality for critical systems requiring uninterrupted power continuity.

This motor-operated transfer switch integrates ABB’s proven switch-disconnector technology with intelligent control functionality, allowing seamless transfer between utility and generator supplies during mains interruptions or power failures. Its compact construction enables easy installation inside electrical panels, switchboards and backup power systems.

With a rated operational current of 63 A, a 4-pole configuration, and a 380–415 V AC motor operating voltage, the OTM63F4CB21D400C is ideal for generator transfer applications, commercial buildings, industrial automation systems and essential power distribution infrastructure. Its open transition switching mechanism provides dependable and secure transfer operation 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 installations.
• 4-pole open transition switching for automatic source transfer.
• Integrated motor-operated mechanism with automatic control functionality.
• Reliable transfer between mains and generator power sources.
• Compact switchboard-friendly design simplifies installation.

Key Features

• ABB Compact ATS automatic transfer switch series.
• 63 A rated operational current.
• 4-pole automatic transfer configuration.
• 380–415 V AC motor operating voltage.
• Open transition switching operation.
• Integrated controller with automatic transfer logic.
• Manual operating handle for maintenance and override control.
• Suitable for panel mounting and power distribution systems.

Technical Specifications

• Manufacturer: ABB
• Series: Compact ATS
• Model: OTM63F4CB21D400C
• Product type: Automatic transfer switch
• Rated operational current: 63 A
• Number of poles: 4P
• Rated operational voltage: 380–415 V AC
• Motor operational voltage: 380–415 V AC
• Transition type: Open transition
• Controller type: 21D
• Rated operational power AC-23A: 41 kW
• Rated insulation voltage: 800 V
• Rated impulse withstand voltage: 8 kV
• Rated short-time withstand current: 2.5 kA for 1 second
• Protection rating: Front IP20
• Mounting type: Base mounting or DIN rail mounting
• Terminal type: Screw terminals
• Dimensions (W × H × D): approx. 233 × 130 × 131 mm
• Weight: approx. 2.2 kg
• Standards: IEC 60947-3

Reliable Automatic Power Transfer for Critical Installations

Automatic transfer switches such as the ABB OTM63F4CB21D400C are designed to automatically switch electrical loads between utility mains and standby power systems. This helps maintain continuity of operation during supply interruptions while protecting critical equipment and infrastructure.

ABB Compact ATS devices are widely used in commercial buildings, industrial facilities and generator systems where reliable power transfer and operational safety are essential. Their compact dimensions, motor-operated functionality and dependable switching performance make them ideal for modern electrical distribution systems.

Typical Applications

• Generator backup and standby power systems.
• Commercial building electrical distribution.
• Industrial automation and manufacturing systems.
• Critical infrastructure and utility installations.
• HVAC and building services equipment.
• Main switchboards and electrical control panels.

Trusted by Electrical Professionals Worldwide

ABB Compact ATS transfer switches are trusted by electrical engineers, panel builders and industrial operators for dependable automatic source transfer, compact installation and long-term operational reliability.