


Siemens 3RN2011-1BA30 is a SIRIUS 3RN2 thermistor motor protection relay and standard evaluation unit.
It uses a 24 V AC/DC supply and provides two changeover contacts.
The 22.5 mm enclosure uses screw terminals and supports manual or remote reset.
Two LEDs indicate ready and tripped states, and a test/reset button is provided.
The sensor circuit includes wire-break and short-circuit monitoring, electrical isolation and ATEX approval for the exact unit.
Siemens lists the product as PM300 - Active Product. Verify the thermistor circuit, supply, contact assignments, reset logic and ATEX requirements before replacement.
Siemens 3RN2011-1BA30 is a SIRIUS 3RN2 thermistor motor protection relay.
The product is a standard evaluation unit with ATEX approval.
It uses a 24 V AC/DC supply and a 22.5 mm enclosure.
Two changeover contacts provide the output switching functions.
Manual and remote reset are supported, with ready and tripped LEDs.
Electrical isolation, a test/reset button, wire-break monitoring and short-circuit monitoring are included.
SIRIUS 3RN2 thermistor motor protection.
Standard evaluation unit with ATEX approval.
24 V AC/DC control supply.
Two changeover contacts.
Manual and remote reset.
Ready and tripped LED indication.
Wire-break and short-circuit monitoring with electrical isolation.
Thermistor-based motor overtemperature protection.
Motor-protection circuits requiring a 24 V AC/DC evaluation relay.
Circuits requiring two changeover output contacts.
Applications requiring manual or remote reset and local test.
Verified ATEX motor-protection installations using the exact approved unit.
Confirm the exact 3RN2011-1BA30 article and the compatible thermistor sensor circuit.
Verify the 24 V AC/DC supply, grounding and upstream protection.
Match both changeover-contact assignments to the motor-control and trip circuits.
Confirm the required manual or remote reset behavior and test procedure.
Verify wire-break and short-circuit monitoring with the connected sensor wiring.
Preserve the required electrical isolation and ATEX installation conditions.
Check screw-terminal conductor sizes, 22.5 mm enclosure fit and panel ventilation.
Test the complete motor-protection and shutdown function before the equipment returns to service.
Siemens lists 3RN2011-1BA30 as PM300 - Active Product.
No official successor is listed for this active article.
A replacement must match the 24 V AC/DC supply and two changeover-contact arrangement.
The thermistor sensor circuit, reset logic, fault monitoring and electrical isolation must be verified.
ATEX approval applies to the exact configured installation and must be reassessed for any change.
AMIKONG can assist with checking availability of the exact unit and compatible spare units for the verified motor-protection circuit.







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