APC 0M-STSU400RX4 Static Transfer Switch, Upsilon STS 400, 4-Pole, 380-415V, IP00

Keep critical systems running without interruption with the APC by Schneider Electric Upsilon STS 400 static transfer switch. This UPS-class static transfer switch is built to provide fast, automatic transfer between power sources so that security, surveillance and IT monitoring equipment experience minimal disruption when switching occurs. Designed for three-phase applications, the STS supports 4-pole configurations and nominal voltages of 380–415V, delivering robust power continuity for data centers, security control rooms and mission-critical infrastructure. With an IP00 enclosure rating and a service-oriented layout, the Upsilon STS 400 integrates easily with existing UPS and generator setups to provide predictable redundancy and simplified maintenance. The unit (Manufacturer Part Number 0M-STSU400RX4) helps reduce the risk of downtime and protects sensitive electronics by eliminating manual switching errors and minimizing switchover time. Ideal for security, surveillance, monitoring and industrial IT environments that demand high availability. Contact your APC sales representative to specify the right STS configuration for your installation or request a quote today.

• Minimizes downtime with instantaneous, automatic power switching to keep critical security and surveillance systems online
• Ensures safe, reliable transfer for 4-pole three-phase loads (380–415V) to protect IT and data center infrastructure
• Reduces operational risk during maintenance or utility failure by enabling seamless redundancy between power sources
• Compact, service-friendly design for easy integration with UPS, generators and monitoring systems in security and monitoring installations
• Engineered by APC by Schneider Electric for industrial-grade reliability and predictable performance in demanding environments