Why Choose the ABB OTM400E4C3D230C Automatic Change-Over Switch?
The ABB OTM400E4C3D230C is a reliable and high-performance automatic change-over switch designed for seamless transfer between two electrical power sources in critical power distribution and backup power applications. As part of the advanced ABB OTM400E4C automatic transfer switch series, it provides dependable automatic source switching for industrial, commercial and infrastructure installations where continuous power availability is essential.
This automatic transfer switch combines ABB’s proven motorised switching technology with integrated control functionality to provide safe and efficient power transfer. The OTM_C3D range includes automatic operation with an OMD300 controller and dual power supply capability for the motor operator, making it suitable for demanding standby power and generator applications.
With a rated operational current of 400 A, a four-pole switching configuration and a 220–240 V AC motor operating voltage, the ABB OTM400E4C3D230C is ideal for automatic mains-to-generator transfer systems, industrial switchboards and commercial backup power installations. Its compact base-mounted format enables straightforward integration into modern electrical distribution assemblies.
Key Advantages
- Heavy-duty automatic transfer switch designed for critical power systems.
- 400 A rated operational current suitable for industrial and commercial installations.
- Four-pole switching design for complete source transfer including neutral switching.
- Integrated OMD300 automatic controller for intelligent operation.
- Motorised switching with reliable automatic source transfer capability.
- Suitable for generator, mains and dual power source applications.
Key Features
- ABB OTM400E4C automatic transfer switch series.
- 400 A rated current capacity.
- Four-pole automatic change-over switching.
- 220–240 V AC motor operating voltage.
- Integrated OMD300 automatic controller.
- Voltage sensing kit mounted on the switch.
- Open transition switching operation.
- Direct-mounted handle for manual operation.
- Designed for switchboard and power distribution installations.
Reliable Power Transfer for Critical Electrical Systems
Automatic transfer switches such as the ABB OTM400E4C3D230C help maintain electrical continuity by automatically transferring connected loads between primary and secondary power sources. This reduces downtime during supply interruptions and improves the resilience of essential electrical systems.
The ABB OTM series is engineered for electrical engineers, system integrators and facility managers requiring dependable source switching, simple installation and long-term operational reliability. The integrated controller, voltage sensing and motorised mechanism provide efficient management of modern backup power systems.
Typical Applications
- Automatic mains failure (AMF) systems.
- Generator backup power installations.
- Industrial electrical distribution systems.
- Commercial buildings and infrastructure.
- Data centres and critical power environments.
- Switchboards and control panels.
