ABB OTM63F4CB21D400C automatic transfer switch, a compact 63 A 4-pole motor-operated ATS designed for reliable backup power transfer in industrial and commercial installations.
£1,760.89
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.
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.
| Power | 41 kW |
|---|---|
| Current | 63 A |
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | Compact ATS |
| 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 |
| HS Code | 85365080 |
| Country of Manufacture | China |
This automatic transfer switch is used to transfer electrical loads between mains and standby power supplies during power interruptions.
The switch is rated for 63 A operation in industrial and commercial electrical systems.
The OTM63F4CB21D400C uses an open transition switching method for secure source transfer.
Yes, the switch includes a manual operating handle for local control, testing and maintenance purposes.
The switch is commonly installed in generator panels, commercial switchboards and industrial power distribution systems.
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.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...