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Siemens 3RN2012-2BW31
Thermistor motor protection relay standard evaluation unit 22.5 mm enclosure spring-loaded terminal 2…
- MPN
- 3RN2012-2BW31
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What is the Siemens 3RN2012-2BW31?
thermistor motor protection relay standard evaluation unit 22.5 mm enclosure spring-loaded terminal 2 changeover contacts bistable Us = 24 V-240 V AC/DC manual/auto/remote RESET 2 LEDs (ready/tripped) electrical isolation test/RESET button wire-break monitoring short-circuit monitoring non-volatile
Specifications
General
| product brand name | SIRIUS |
| product category | SIRIUS 3RN2 thermistor motor protection |
| product designation | Thermistor motor protection relay |
| design of the product | Bistable evaluation unit, open-circuit and short-circuit detection in the sensor circuit (no triggering in the event of control supply voltage failure) |
| product type designation | 3RN2 |
General technical data
| product function | thermistor motor protection |
| display version LED | Yes |
| power loss [W] for rated value of the current — at AC in hot operating state | 1 W |
| power loss [W] for rated value of the current — at DC in hot operating state | 1 W |
| insulation voltage for overvoltage category III according to IEC 60664 with degree of pollution 3 rated value | 300 V |
| degree of pollution | 3 |
| surge voltage resistance rated value | 4 kV |
| shock resistance according to IEC 60068-2-27 | 11 g / 15 ms |
| vibration resistance according to IEC 60068-2-6 | 10 ... 55 Hz: 0.35 mm |
| mechanical service life (operating cycles) typical | 10 000 000 |
| electrical endurance (operating cycles) at AC-15 — at 24 V typical | 100 000 |
| electrical endurance (operating cycles) at AC-15 — at 230 V typical | 100 000 |
| thermal current of the switching element with contacts maximum | 5 A |
| reference code according to IEC 81346-2 | K |
| Substance Prohibitance (day/month/year) | 05/01/2012 |
| SVHC substance name | Lead CAS-No. 7439-92-1 Lead monoxide (lead oxide) CAS-No. 1317-36-8 2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one CAS-No. 71868-10-5 Melamine CAS-No. 108-78-1 6,6'-di-tert-butyl-2,2'-methylenedi-p-cresol CAS-No. 119-47-1 |
| Net Weight | 0.147 kg |
Product Function
| product function — error memory | Yes |
| product function — dynamic open-circuit detection | Yes |
| product function — external reset | Yes |
| product function — auto-RESET | Yes |
| product function — manual RESET | Yes |
Control circuit/ Control
| type of voltage of the control supply voltage | AC/DC |
| control supply voltage at AC — at 50 Hz rated value | 24 ... 240 V |
| control supply voltage at AC — at 60 Hz rated value | 24 ... 240 V |
| control supply voltage at DC rated value | 24 ... 240 V |
| operating range factor control supply voltage rated value at DC — initial value | 0.85 |
| operating range factor control supply voltage rated value at DC — full-scale value | 1.1 |
| operating range factor control supply voltage rated value at AC at 50 Hz — initial value | 0.85 |
| operating range factor control supply voltage rated value at AC at 50 Hz — full-scale value | 1.1 |
| operating range factor control supply voltage rated value at AC at 60 Hz — initial value | 0.85 |
| operating range factor control supply voltage rated value at AC at 60 Hz — full-scale value | 1.1 |
| inrush current peak — at 24 V | 0.7 A |
| inrush current peak — at 240 V | 12 A |
| duration of inrush current peak — at 24 V | 0.25 ms |
| duration of inrush current peak — at 240 V | 0.2 ms |
Measuring circuit
| buffering time in the event of power failure minimum | 40 ms |
Precision
| relative metering precision | 2 % |
Auxiliary circuit
| material of switching contacts | AgSnO2 |
| number of NC contacts for auxiliary contacts | 0 |
| number of NO contacts for auxiliary contacts | 0 |
| number of CO contacts for auxiliary contacts | 2 |
| operational current of auxiliary contacts at AC-15 maximum | 3 A |
| operational current of auxiliary contacts at DC-13 — at 24 V | 1 A |
| operational current of auxiliary contacts at DC-13 — at 125 V | 0.2 A |
| operational current of auxiliary contacts at DC-13 — at 250 V | 0.1 A |
Main circuit
| operating frequency rated value | 50 ... 60 Hz |
| ampacity of the output relay at AC-15 at 250 V at 50/60 Hz | 3 A |
| ampacity of the output relay at DC-13 — at 24 V | 1 A |
| ampacity of the output relay at DC-13 — at 125 V | 0.2 A |
| continuous current of the DIAZED fuse link of the output relay | 6 A |
Electromagnetic compatibility
| conducted interference — due to burst according to IEC 61000-4-4 | 2 kV (power ports) / 1 kV (signal ports) |
| conducted interference — due to conductor-earth surge according to IEC 61000-4-5 | 2 kV (line to ground) |
| conducted interference — due to conductor-conductor surge according to IEC 61000-4-5 | 1 kV (line to line) |
| electrostatic discharge according to IEC 61000-4-2 | 6 kV contact discharge / 8 kV air discharge |
Galvanic isolation
| design of the electrical isolation | galvanic isolation |
| galvanic isolation — between input and output | Yes |
| galvanic isolation — between the outputs | Yes |
| galvanic isolation — between the voltage supply and other circuits | Yes |
Connections/ Terminals
| product component removable terminal for auxiliary and control circuit | Yes |
| type of electrical connection | spring-loaded terminal (push-in) |
| type of electrical connection — for auxiliary and control circuit | spring-loaded terminals (push-in) |
| type of connectable conductor cross-sections — solid | 1x (0.5 ... 4 mm²) |
| type of connectable conductor cross-sections — finely stranded with core end processing | 1x (0.5 ... 2.5 mm²) |
| type of connectable conductor cross-sections — finely stranded without core end processing | 0.5 ... 4 mm² |
| type of connectable conductor cross-sections — for AWG cables solid | 1x (20 ... 12) |
| type of connectable conductor cross-sections — for AWG cables stranded | 20 ... 12 |
| connectable conductor cross-section — solid | 0.5 ... 4 mm² |
| connectable conductor cross-section — finely stranded with core end processing | 0.5 ... 2.5 mm² |
| connectable conductor cross-section — finely stranded without core end processing | 0.5 ... 4 mm² |
| AWG number as coded connectable conductor cross section — solid | 20 ... 12 |
| AWG number as coded connectable conductor cross section — stranded | 20 ... 12 |
Installation/ mounting/ dimensions
| mounting position | any |
| fastening method | screw and snap-on mounting onto 35 mm DIN rail |
| height | 100 mm |
| width | 22.5 mm |
| depth | 90 mm |
| required spacing — with side-by-side mounting — forwards | 0 mm |
| required spacing — with side-by-side mounting — backwards | 0 mm |
| required spacing — with side-by-side mounting — upwards | 0 mm |
| required spacing — with side-by-side mounting — downwards | 0 mm |
| required spacing — with side-by-side mounting — at the side | 0 mm |
| required spacing — for grounded parts — forwards | 0 mm |
| required spacing — for grounded parts — backwards | 0 mm |
| required spacing — for grounded parts — upwards | 0 mm |
| required spacing — for grounded parts — at the side | 0 mm |
| required spacing — for grounded parts — downwards | 0 mm |
| required spacing — for live parts — forwards | 0 mm |
| required spacing — for live parts — backwards | 0 mm |
| required spacing — for live parts — upwards | 0 mm |
| required spacing — for live parts — downwards | 0 mm |
| required spacing — for live parts — at the side | 0 mm |
Ambient conditions
| installation altitude at height above sea level maximum | 2 000 m |
| ambient temperature — during operation | -25 ... +60 °C |
| ambient temperature — during storage | -40 ... +85 °C |
| ambient temperature — during transport | -40 ... +85 °C |
| relative humidity during operation maximum | 70 % |
Downloads & documentation
Official documents from Siemens, downloaded directly from the manufacturer.
Data sheets & manuals
3RN2012-2BW31: frequently asked questions
When can 3RN2012-2BW31 be shipped?
3RN2012-2BW31 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Can I pick up 3RN2012-2BW31 in person?
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Is express delivery available?
Yes — mention it when you request a quote for 3RN2012-2BW31 and we'll include express shipping options in our reply.
My factory is down and I need this urgently — can you help?
For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 3RN2012-2BW31, subject to availability and destination.
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Siemens 3RN2012-2BW31Price and lead time confirmed within 1 business day
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