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Siemens 3RT20281BB40
Power contactor, AC-3 38 A, 18.5 kW , 400 V 1 NO + 1 NC, 24 V DC 3-pole, size S0 screw terminals
This Siemens 3RT20281BB40 is supplied brand new by PartLogic for switching, motor protection, starting, control panel builds, machinery maintenance and industrial electrical applications. It forms part of our Industrial automation > Motor control > Contactors range and is referenced internally as PartLogic SKU PL27090319609.
Before ordering, please confirm the manufacturer part number, product specifications and compatibility with your existing equipment. If you are replacing a failed, obsolete or hard-to-find part, contact PartLogic and we can help check suitability or source related components.
Brand New - 12 Months Warranty
$272.63
(inc. GST)
In Stock
| product brand name | SIRIUS |
| product designation | Power contactor |
| product type designation | 3RT2 |
| size of contactor | S0 |
| function module for communication | No |
| auxiliary switch | Yes |
| at AC in hot operating state | 9.6 W |
| at AC in hot operating state per pole | 3.2 W |
| without load current share typical | 5.9 W |
| type of calculation of power loss depending on pole | quadratic |
| of main circuit with degree of pollution 3 rated value | 690 V |
| of auxiliary circuit with degree of pollution 3 rated value | 690 V |
| of main circuit rated value | 6 kV |
| of auxiliary circuit rated value | 6 kV |
| maximum permissible voltage for protective separation between coil and main contacts according to EN 60947-1 | 400 V |
| at DC | 10g / 5 ms, 7,5g / 10 ms15g / 5 ms, 10g / 10 ms1 500 1/h50 ... 170 ms15 ... 18 ms |
| of contactor typical | 10 000 000 |
| of the contactor with added electronically optimized auxiliary switch block typical | 5 000 000 |
| of the contactor with added auxiliary switch block typical | 10 000 000 |
| reference code according to IEC 81346-2 | Q |
| Substance Prohibitance (Date) | 10/01/2009 |
| Net Weight | 610 g |
| installation altitude at height above sea level maximum | 2 000 m |
| during operation | -25 ... +60 °C |
| during storage | -55 ... +80 °C |
| relative humidity minimum | 10 % |
| relative humidity at 55 °C according to IEC 60068-2-30 maximum | 95 % |
| number of poles for main current circuit | 3 |
| number of NO contacts for main contacts | 3 |
| number of NC contacts for main contacts | 0 |
| at AC-3 rated value maximum | 690 V |
| at AC-3e rated value maximum | 690 V |
| at AC-1 at 400 V at ambient temperature 40 °C rated value | 50 A |
| — up to 690 V at ambient temperature 40 °C rated value | 50 A |
| — up to 690 V at ambient temperature 60 °C rated value | 42 A |
| — at 400 V rated value | 38 A18.5 kW |
| — at 500 V rated value | 32 A18.5 kW |
| — at 690 V rated value | 21 A18.5 kW |
| at AC-4 at 400 V rated value | 22 A |
| at AC-5a up to 690 V rated value | 44 A |
| at AC-5b up to 400 V rated value | 31.5 A |
| — up to 230 V for current peak value n=20 rated value | 30.8 A |
| — up to 400 V for current peak value n=20 rated value | 30.8 A |
| — up to 500 V for current peak value n=20 rated value | 30.8 A |
| — up to 690 V for current peak value n=20 rated value | 21 A |
| — up to 230 V for current peak value n=30 rated value | 20.5 A |
| — up to 400 V for current peak value n=30 rated value | 20.5 A |
| — up to 500 V for current peak value n=30 rated value | 21.4 A |
| — up to 690 V for current peak value n=30 rated value | 21 A |
| minimum cross-section in main circuit at maximum AC-1 rated value | 10 mm² |
| at 400 V rated value | 12 A6 kW3 A |
| at 690 V rated value | 12 A10.3 kW1 A |
| — at 24 V rated value | 35 A20 A |
| — at 60 V rated value | 20 A35 A5 A |
| — at 110 V rated value | 4.5 A35 A2.5 A15 A |
| — at 220 V rated value | 1 A5 A35 A3 A10 A |
| — at 440 V rated value | 0.4 A1 A2.9 A0.09 A0.27 A0.6 A |
| — at 600 V rated value | 0.25 A0.8 A1.4 A0.06 A0.16 A0.6 A |
| — at 230 V rated value | 11 kW5 hp |
| up to 230 V for current peak value n=20 rated value | 12.2 kVA |
| up to 400 V for current peak value n=20 rated value | 21.3 kVA |
| up to 500 V for current peak value n=20 rated value | 26.6 kVA |
| up to 690 V for current peak value n=20 rated value | 25 kVA |
| up to 230 V for current peak value n=30 rated value | 8.1 kVA |
| up to 400 V for current peak value n=30 rated value | 14.2 kVA |
| up to 500 V for current peak value n=30 rated value | 18.5 kVA |
| up to 690 V for current peak value n=30 rated value | 25 kVA |
| limited to 1 s switching at zero current maximum | 593 A; Use minimum cross-section acc. to AC-1 rated value |
| limited to 5 s switching at zero current maximum | 341 A; Use minimum cross-section acc. to AC-1 rated value |
| limited to 10 s switching at zero current maximum | 260 A; Use minimum cross-section acc. to AC-1 rated value |
| limited to 30 s switching at zero current maximum | 199 A; Use minimum cross-section acc. to AC-1 rated value |
| limited to 60 s switching at zero current maximum | 162 A; Use minimum cross-section acc. to AC-1 rated value |
| at AC-1 maximum | 1 000 1/h |
| at AC-2 maximum | 750 1/h |
| at AC-3 maximum | 750 1/h |
| — maximum | 750 1/h |
| at AC-4 maximum | 250 1/h |
| type of voltage of the control supply voltage | DC |
| control supply voltage at DC rated value | 24 V |
| initial value | 0.8 |
| full-scale value | 1.1 |
| closing power of magnet coil at DC | 5.9 W |
| holding power of magnet coil at DC | 5.9 W |
| arcing time | 10 ... 10 ms |
| control version of the switch operating mechanism | Standard A1 - A2 |
| number of NC contacts for auxiliary contacts instantaneous contact | 1 |
| number of NO contacts for auxiliary contacts instantaneous contact | 1 |
| operational current at AC-12 maximum | 10 A |
| at 230 V rated value | 10 A |
| at 500 V rated value | 2 A |
| at 24 V rated value | 10 A |
| at 48 V rated value | 6 A2 A |
| at 60 V rated value | 6 A2 A |
| at 110 V rated value | 3 A1 A |
| at 125 V rated value | 2 A0.9 A |
| at 220 V rated value | 1 A0.3 A |
| at 600 V rated value | 0.15 A0.1 A27 A |
| contact reliability of auxiliary contacts | 1 faulty switching per 100 million (17 V, 1 mA) |
| at 480 V rated value | 34 A |
| — at 110/120 V rated value | 3 hp |
| — at 200/208 V rated value | 10 hp |
| — at 220/230 V rated value | 10 hp |
| — at 460/480 V rated value | 25 hp |
| — at 575/600 V rated value | 25 hp |
| contact rating of auxiliary contacts according to UL | A600 / P600 |
| Category Control Number (CCN) | E31519 (NLDX, NLDX7) |
| design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 V | C characteristic: 10 A; 0.4 kA |
| — with type of coordination 1 required | gG: 125 A (690 V,100 kA), aM: 50 A (690 V,100 kA), BS88: 125 A (415 V,80 kA) |
| — with type of coordination 2 required | gG: 50 A (690 V, 100 kA), aM: 25 A (690 V, 100 kA), BS88: 50 A (415 V, 80 kA) |
| for short-circuit protection of the auxiliary switch required | gG: 10 A (500 V, 1 kA) |
| mounting position | +/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface |
| fastening method side-by-side mounting | Yes |
| fastening method | screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715 |
| height | 85 mm |
| width | 45 mm |
| depth | 107 mm |
| — forwards | 10 mm |
| — upwards | 10 mm |
| — downwards | 10 mm |
| — at the side | 0 mm6 mm |
| for main current circuit | screw-type terminals |
| for auxiliary and control circuit | screw-type terminals |
| at contactor for auxiliary contacts | Screw-type terminals |
| of magnet coil | Screw-type terminals |
| — solid | 2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²) |
| — solid or stranded | 2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²)2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| — finely stranded with core end processing | 2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²), 1x 10 mm²2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| for AWG cables for main contacts | 2x (16 ... 12), 2x (14 ... 8) |
| solid | 1 ... 10 mm² |
| stranded | 1 ... 10 mm² |
| finely stranded with core end processing | 1 ... 10 mm²0.5 ... 2.5 mm² |
| solid or stranded | 0.5 ... 2.5 mm² |
| for AWG cables for auxiliary contacts | 2x (20 ... 16), 2x (18 ... 14) |
| AWG number as coded connectable conductor cross section for main contacts | 16 ... 8 |
| AWG number as coded connectable conductor cross section for auxiliary contacts | 20 ... 14 |
| mirror contact according to IEC 60947-4-1 | Yes |
| positively driven operation according to IEC 60947-5-1 | No |
| suitable for safety function | Yes |
| suitability for use safety-related switching OFF | Yes |
| service life maximum | 20 a |
| test wear-related service life necessary | Yes |
| with low demand rate according to SN 31920 | 40 % |
| with high demand rate according to SN 31920 | 73 % |
| B10 value with high demand rate according to SN 31920 | 1 000 000 |
| failure rate [FIT] with low demand rate according to SN 31920 | 100 FIT |
| device type according to ISO 13849-1 | 3 |
| overdimensioning according to ISO 13849-2 necessary | Yes |
| safety device type according to IEC 61508-2 | Type A |
| protection class IP on the front according to IEC 60529 | IP20 |
| touch protection on the front according to IEC 60529 | finger-safe, for vertical contact from the front |
| global warming potential [CO2 eq] / during manufacturing | 2.65 kg |
| global warming potential [CO2 eq] / during operation | 219 kg |
| global warming potential [CO2 eq] / after end of life | -0.639 kg |
| global warming potential [CO2 eq] / total | 221 kg |
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