Siemens 3VU1300-1MF00 Motor Protection Relay

Siemens 3VU1300-1MF00 is a three-pole motor protection circuit breaker that guards three-phase motors from overload and short-circuit events. It integrates a thermal overload element (adjustable bi-metal) with a fixed magnetic trip, delivering both time-delayed and instantaneous protection. The unit includes an auxiliary contact pair (1NO + 1NC) accessible via screw terminals for signaling and interlocking in control circuits. Rated for up to 25 A and up to 600 V, it suits motor feeders in standard industrial cabinets. The A-release is adjustable from 0.6 to 1 A, with a separate N-release rated up to 12 A, enabling fine-tuned protection for different motor loads. This 3-pole device is designed for direct mounting in Siemens motor control systems and supports screw-terminal wiring for the main and auxiliary circuits. With its compact footprint and integrated protection and signaling contacts, it provides reliable motor protection for three-phase systems up to 25 A and serves as a practical protection element for applications like fans, pumps, conveyors, and other 3-phase machines in automation and process control environments.