3RN2011-1BA30 Thermistor Motor Protection Relay - Siemens

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Manager: Leonia

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/ Technical Information /

Manufacturer: Siemens
Product Numbers: 3RN2011-1BA30
Product Type: Thermistor Motor Protection Relay
Place of 0rigin: Germany
product brand name: SIRIUS
product category: SIRIUS 3RN2 thermistor motor protection
product designation: Thermistor motor protection relay
design of the product: Standard evaluation unit with ATEX approval, open-circuit and short-circuit: detection in the sensor circuit
product type designation: 3RN2
degree of pollution: 3
surge voltage resistance rated value: 4 kV
protection class IP: IP20
shock resistance according to IEC 60068-2-27: 11g / 15 ms
mechanical service life (operating cycles) typical: 10 000 000
operating frequency rated value: 50 ... 60 Hz
ampacity of the output relay at AC-15 at 250 V at 50/60 Hz: 3 A
PFHD with high demand rate according to IEC 62061: 3.76E-7 1/h

/ Product Overview /

Siemens 3RN2011-1BA30 SIRIUS Thermistor Motor Protection Relay is a compact and reliable motor protection device designed to monitor motor temperature through thermistor sensors and provide dependable overload protection in industrial applications. Housed in a slim 22.5 mm enclosure, the relay features two change-over contacts, screw terminal connections, and operation with a 24 V AC/DC supply voltage. It includes integrated wire-break and short-circuit monitoring in the sensor circuit, ensuring safe and accurate fault detection. With ATEX approval, galvanic isolation, and IP20 protection rating, the unit is suitable for hazardous and standard industrial environments where reliable motor protection is required.
The relay supports manual and remote reset functions and incorporates READY and TRIPPED LED indicators for clear operational status monitoring. Designed according to SIRIUS 3RN2 protection standards, it offers high durability with a typical mechanical service life of 10 million operating cycles and surge voltage resistance up to 4 kV. The output relay is rated for 3 A at AC-15, 250 V, 50/60 Hz, while the PFHD value of 3.76E-7 1/h according to IEC 62061 supports use in safety-oriented applications. Its robust construction, shock resistance, and stable operation across 50 to 60 Hz power systems make it suitable for protecting motors in automation, process control, and industrial drive systems.

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Amikon Limited is a trusted global supplier specializing in PLC, DCS, and TSI automation products. We are committed to delivering efficient, reliable, and cost-effective solutions for industrial control systems across a wide range of applications.

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 >> Manager: Leonia    |    Email: sales11@amikon.cn    |    Whatsapp: +8618030175807