BOM / RFQ

Siemens 3RN1010-1CB00 — Process / Temperature Controllers

Siemens 3RN1010-1CB00 Thermistor Motor Protection, 24 V AC/D

MPN3RN1010-1CB00

Siemens SIRIUS 3RN1 thermistor motor protection evaluation unit, 24 V AC/DC, 1 NO + 1 NC, screw terminal, 22.5 mm width, IP20.

Add to RFQ

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RN1010-1CB00 — Electrical
Parameter	Value
Rated value (50 Hz)	24 V
Rated value (60 Hz)	24 V

3RN1010-1CB00 — Environmental
Parameter	Value
Ingress protection (IP rating), wired	IP20

3RN1010-1CB00 — Mechanical
Parameter	Value
Fastening method	screw and snap-on mounting
Width	22.5 mm
Height	92 mm
Depth	91 mm

Product details

The Siemens 3RN1010-1CB00 is a thermistor motor protection evaluation unit from the SIRIUS 3RN1 series, designed to monitor PTC thermistor sensors embedded in motor windings.

The 22.5 mm width fits standard DIN-rail spacing, and the screw and snap-on mounting means it clips onto the rail without tools. The LED display version gives a visual indication of trip status. Wiring is via screw-type terminals for the auxiliary and control circuit; the unit accepts 24 V AC/DC on the supply side. The single NC contact breaks on overtemperature, while the NO contact closes — typical for a fail-safe motor protection circuit.

Frequently asked questions

What replaces the 3RN1010-1CB00?

The official successor is the 3RN2010-1CA30. It uses the same 24 V AC/DC supply, same contact arrangement (1 NO + 1 NC), and same screw terminal connection. The reset mode on the successor is AUTO; check your application requires that behavior.

What are the key ratings of the 3RN1010-1CB00?

It is a thermistor motor protection evaluation unit rated for 24 V AC/DC supply. It provides one normally open and one normally closed auxiliary contact. The enclosure is 22.5 mm wide, IP20 rated, with screw-type terminals. Operating ambient temperature is -25 to +60 °C.