This product page details the OT63_C change over switch, a robust manual transfer switch designed for reliable power source switching in electrical distribution systems. This 3-pole, 60A, 400V rotary disconnect switch provides safe and secure manual switching between main and alternative power sources, making it ideal for backup power, generator transfer, and source selection applications.
Overview of the Change Over Switch
The OT63_C change over switch serves as a critical component in power management systems where source redundancy is required. Because it features a secure mechanical interlock and clear position indication, it prevents parallel connection of power sources while ensuring operators always know the active power source status.
Key Features and Technical Specifications
This manual transfer switch is engineered for both safety and reliability. Therefore, here are its essential characteristics:
- Current Rating: 60A continuous current capacity
- Voltage Rating: 400V for standard three-phase systems
- Poles: 3-pole configuration for three-phase applications
- Operation: Rotary manual operation with positive positioning
- Positions: 0-OFF-1 switching (Source 1 – OFF – Source 2)
- Construction: Robust mechanical design with visible contacts
- Mounting: Panel-mounted with standard cutout requirements
- Standards: Compliant with IEC 60947-3 standards

Typical Applications and Use Cases
The transfer capability of this change over switch makes it essential for various power management scenarios. For example, it is commonly used in:
- Generator transfer and backup power systems
- Dual utility source switching applications
- Critical power supply transfer in commercial buildings
- Industrial machinery with redundant power feeds
- UPS and backup system bypass arrangements
- Manufacturing facility power source selection
- Emergency power system integration
For complete power management solutions, explore our range of automatic transfer switches and related accessories for different application requirements.
Why Choose the OT63_C Change Over Switch?
Selecting the OT63_C change over switch provides significant advantages for power transfer applications. Firstly, the mechanical interlock design absolutely prevents both power sources from being connected simultaneously, eliminating the risk of dangerous back-feeding situations. Secondly, the robust 60A, 400V rating ensures reliable performance in standard industrial and commercial three-phase systems. Consequently, you achieve safe, manual power source transfer with clear position indication for critical power management applications.
Installation and Operational Guidelines
Proper installation of the change over switch is crucial for safe operation. Mount the switch in an accessible location with clear visibility of the position indicator. Ensure adequate cable terminations for the 60A rating and provide proper labeling for both power sources. Furthermore, always implement lockout/tagout procedures during maintenance and train personnel on proper switching sequences to ensure operational safety.
For detailed wiring diagrams and technical specifications, consult the comprehensive ABB OT63_C change over switch technical documentation.
Ensure Reliable Power Transfer Today
In summary, the OT63_C change over switch represents a robust and reliable solution for manual power source transfer requirements. Finally, by incorporating this quality switch into your electrical systems, you ensure safe power source management, enable maintenance flexibility, and provide reliable power continuity for your commercial and industrial applications.