The Siemens 6EP1931-2EC21 is a compact, high-performance DIN rail-mounted Uninterruptible Power Supply (UPS) from the SITOP range, designed to ensure reliable DC power backup in industrial automation systems. It delivers a 360W output and provides seamless protection against power interruptions or voltage fluctuations. By integrating with 24V DC systems, this UPS module ensures the uninterrupted operation of critical components, including PLCs, sensors, and controllers, during power loss or brownouts.

Why Choose the Siemens DIN Rail Uninterruptible Power Supply (UPS)?

Choosing the Siemens 6EP1931-2EC21 UPS offers robust reliability, compact design, and intelligent energy management features that are ideal for industrial environments. It features maintenance-free energy storage using double-layer capacitors, eliminating the need for batteries and extending service life. With easy installation on DIN rails, it integrates smoothly into control panels, offering fast switchover times and high efficiency. The device also includes diagnostic LEDs for monitoring system status, supports short buffering times up to 4 seconds at full load, and requires minimal maintenance—making it a cost-effective and space-saving power backup solution.

Typical Uses of Siemens 6EP1931-2EC21 UPS, SITOP DC (360W):

This UPS is commonly used to maintain DC power supply continuity in automation and industrial control systems.

• PLCs and industrial controllers
• HMI displays and communication modules
• Sensor and actuator systems
• Critical 24V logic circuits
• Process control and manufacturing systems
• Power protection in transportation and building automation panels.