The Siemens 3RN1013-2GW00 is a thermistor motor protection evaluation unit from the SIRIUS family. It monitors motor winding temperature via PTC thermistors and trips when the threshold is exceeded, preventing thermal damage. The unit accepts a universal AC/DC supply from 24 to 240 V (50/60 Hz), so it works across control voltages without a separate power supply module.
The 3RN1013-2GW00 provides two CO (changeover) contacts for auxiliary signaling — enough to drive a PLC input and a local alarm lamp simultaneously. No NC or NO contacts are dedicated; all auxiliary switching is through the CO pair. A built-in reclosing lockout function prevents automatic restart after a trip — the motor stays off until the fault is acknowledged and reset. This is critical for unattended or remote installations where an automatic reclose could cause injury or equipment damage. The LED display gives a quick visual indication of the unit's state (tripped, running, or fault), which speeds troubleshooting on the floor.
Depth is 91 mm, so it clears most shallow enclosures. The spring-loaded terminals face forward, making wiring accessible without removing adjacent units. No backplane bus or external power supply needed; the control voltage is wired directly to the terminals.