Siemens 3UA5200-2C Relay

Siemens 3UA5200-2C is a thermal overload relay designed to protect motors in industrial control circuits and to mount on Siemens 3TF32/33 contactors. It provides adjustable protection for motors in the 16–25 A range, with selectable settings at 16, 20, or 25 A to align with the motor’s full-load current. The relay delivers thermal-delay protection, interrupting the circuit when overload conditions persist, and it includes a manual reset to clear trips after the fault is addressed. As part of Siemens' 3UA5200 family, the 2C variant is a dedicated overload protection device for line-side motor circuits, offering a compact, dedicated protective element that integrates with compatible contactors. Typical applications include industrial conveyors, pumps, fans, and machine tools where motors require reliable overcurrent protection and straightforward reset in maintenance routines. Mounted directly to Siemens 3TF32/33 contactors, the 3UA5200-2C is intended for systems that rely on robust, field-adjustable motor protection without ancillary circuitry. This model is designed to protect AC motors in control panels and distributed motor starting configurations, ensuring protection against sustained overloads while allowing quick circuit restoration after a fault. The 3UA5200-2C’s specification aligns with standard Siemens low-voltage motor protection practices for equipment with nominal current within the 16–25 A band, enabling dependable safeguarding of motor windings and drive mechanisms in demanding industrial environments.