Why Choose the ABB OTM125F4CB21D400C Automatic Transfer Switch?
The ABB OTM125F4CB21D400C is a compact and dependable automatic transfer switch (ATS) designed for automatic power source changeover in industrial, commercial and standby power applications. As part of the ABB OTM Compact ATS series, it provides reliable motor-operated transfer between two electrical sources to help maintain continuity of supply for critical systems.
This automatic transfer switch features a motor-operated open transition 1-0-2 switching mechanism with a self-supplied controller and adjustable operating parameters. Its compact construction makes it suitable for low-voltage switchboards, generator panels and distribution systems where dependable automatic source transfer is required.
With a rated current of 125 A, a 4-pole configuration and a 380–415 V AC operating voltage, the ABB OTM125F4CB21D400C is designed for three-phase power distribution systems requiring automatic mains-to-generator or dual-source transfer capability.
Key Advantages
- Compact automatic transfer switch for standby power applications.
- 125 A rated current capacity for low-voltage installations.
- 4-pole switching configuration including neutral switching.
- Reliable motor-operated automatic transfer functionality.
- Self-supplied controller with adjustable operating parameters.
- Compact design simplifies switchboard and panel installation.
Key Features
- ABB OTM Compact ATS series.
- Model: OTM125F4CB21D400C.
- 125 A rated operational current.
- 4-pole automatic change-over switching.
- 380–415 V AC operating voltage.
- Motor-operated open transition 1-0-2 switching.
- Controller type: 21D.
- Self-supplied automatic control unit.
- Adjustable transfer parameters for flexible operation.
- Suitable for mains and standby generator applications.
Reliable Automatic Power Transfer for Critical Systems
Automatic transfer switches such as the ABB OTM125F4CB21D400C monitor available power sources and automatically transfer connected loads between normal and backup supplies when required. This helps reduce downtime and maintain operation of essential electrical equipment.
The ABB OTM Compact ATS range provides electrical engineers, contractors and panel builders with a practical solution for automatic mains changeover, generator backup systems and industrial power distribution applications.
Typical Applications
- Automatic mains and generator transfer systems.
- Industrial power distribution panels.
- Commercial standby power installations.
- Electrical switchboards and control cabinets.
- Emergency power systems.
- Low-voltage automatic changeover applications.
