| Fail-safe direct starter, 3RM1, 500 V, 0.55 - 3 kW, 1.6 - 7 A, 110-230 V AC, screw terminals |
| product brand name | SIRIUS |
| product category | Motor starter |
| product designation | Fail-safe direct starter |
| design of the product | With electronic overload protection and safety-related disconnection |
| product type designation | 3RM1 |
| General technical data |
| trip class | CLASS 10A |
| equipment variant according to IEC 60947-4-2 | 3 |
| product function | fail-safe direct starter |
| ● intrinsic device protection | Yes |
| ● for power supply reverse polarity protection | Yes |
| suitability for operation device connector 3ZY12 | No |
| insulation voltage rated value | 500 V |
| overvoltage category | III |
| surge voltage resistance rated value | 6 kV |
| maximum permissible voltage for safe isolation | |
| ● between main and auxiliary circuit | 500 V |
| ● between control and auxiliary circuit | 250 V |
| shock resistance | 6g / 11 ms |
| vibration resistance | 1 ... 6 Hz, 15 mm; 20 m/s², 500 Hz |
| operating frequency maximum | 1 1/s |
| mechanical service life (switching cycles) typical | 15 000 000 |
| reference code according to IEC 81346-2 | Q |
| Substance Prohibitance (Date) | 03/01/2017 |
| product function | |
| ● direct start | Yes |
| ● reverse starting | No |
| product function short circuit protection | No |
| Electromagnetic compatibility |
| EMC emitted interference according to IEC 60947-1 | class A |
| EMC immunity according to IEC 60947-1 | Class A |
| conducted interference | |
| ● due to burst according to IEC 61000-4-4 | 3 kV / 5 kHz |
| ● due to conductor-earth surge according to IEC 61000-4-5 | 4 kV signal lines 2 kV |
| ● due to conductor-conductor surge according to IEC 61000-4-5 | 2 kV |
| ● due to high-frequency radiation according to IEC 61000-4-6 | 10 V |
| field-based interference according to IEC 61000-4-3 | 10 V/m |
| electrostatic discharge according to IEC 61000-4-2 | 6 kV contact discharge / 8 kV air discharge |
| conducted HF interference emissions according to CISPR11 | Class B for domestic, business and commercial environments; Class A for industrial environments at 110 V DC |
| field-bound HF interference emission according to CISPR11 | Class B for domestic, business and commercial environments; Class A for industrial environments at 110 V DC |
| Safety related data |
| safety device type according to IEC 61508-2 | Type B |
| Safety Integrity Level (SIL) according to IEC 61508 | 3 |
| SIL Claim Limit (subsystem) according to EN 62061 | SILCL 3 |
| performance level (PL) according to EN ISO 13849-1 | e |
| category according to EN ISO 13849-1 | 4 |
| stop category according to EN 60204-1 | 0 |
| Safe failure fraction (SFF) | 99.4 % |
| average diagnostic coverage level (DCavg) | 99 % |
| diagnostics test interval by internal test function maximum | 600 s |
| function test interval maximum | 1 y |
| failure rate [FIT] | |
| ● at rate of recognizable hazardous failures (λdd) | 1 400 FIT |
| ● at rate of non-recognizable hazardous failures (λdu) | 16 FIT |
| PFHD with high demand rate according to EN 62061 | 0.00000002 1/h |
| PFDavg with low demand rate according to IEC 61508 | 0.000018 |
| MTTFd | 75 y |
| hardware fault tolerance according to IEC 61508 | 1 |
| T1 value for proof test interval or service life according to IEC 61508 | 20 y |
| safe state | Load circuit open |
| protection class IP on the front according to IEC 60529 | IP20 |
| touch protection on the front according to IEC 60529 | finger-safe |
| OFF-delay time with safety-related request | |
| ● when switched off via control inputs maximum | 90 ms |
| ● when switched off via supply voltage maximum | 120 ms |
| hardware fault tolerance according to IEC 61508 relating to ATEX | 0 |
| PFDavg with low demand rate according to IEC 61508 relating to ATEX | 0.0005 |
| PFHD with high demand rate according to EN 62061 relating to ATEX | 0.00000005 1/h |
| Safety Integrity Level (SIL) according to IEC 61508 relating to ATEX | SIL2 |
| T1 value for proof test interval or service life according to IEC 61508 relating to ATEX | 3 y |
| Main circuit |
| number of poles for main current circuit | 3 |
| design of the switching contact | Hybrid |
| adjustable current response value current of the current-dependent overload release | 1.6 ... 7 A |
| minimum load [%] | 20 %; from set rated current |
| type of the motor protection | solid-state |
| operating voltage rated value | 48 ... 500 V |
| relative symmetrical tolerance of the operating voltage | 10 % |
| operating frequency 1 rated value | 50 Hz |
| operating frequency 2 rated value | 60 Hz |
| relative symmetrical tolerance of the operating frequency | 10 % |
| operational current | |
| ● at AC at 400 V rated value | 7 A |
| ● at AC-3 at 400 V rated value | 7 A |
| ● at AC-53a at 400 V at ambient temperature 40 °C rated value | 7 A |
| ampacity when starting maximum | 56 A |
| operating power for 3-phase motors at 400 V at 50 Hz | 0.55 ... 3 kW |
| derating temperature | 40 °C |
| Inputs/ Outputs |
| input voltage at digital input | |
| ● at DC rated value | 110 V |
| ● with signal <0> at DC | 0 ... 40 V |
| ● for signal <1> at DC | 79 ... 121 |
| input voltage at digital input | |
| ● at AC rated value | 110 V |
| ● with signal <0> at AC | 0 ... 40 V |
| ● for signal <1> at AC | 93 ... 253 V |
| input current at digital input | |
| ● for signal <1> at DC | 1.5 mA |
| ● with signal <0> at DC | 0.25 mA |
| input current at digital input with signal <0> at AC | |
| ● at 110 V | 0.2 mA |
| ● at 230 V | 0.4 mA |
| input current at digital input for signal <1> at AC | |
| ● at 110 V | 1.1 mA |
| ● at 230 V | 2.3 mA |
| number of CO contacts for auxiliary contacts | 1 |
| operational current of auxiliary contacts at AC-15 at 230 V maximum | 3 A |
| operational current of auxiliary contacts at DC-13 at 24 V maximum | 1 A |
| Control circuit/ Control |
| type of voltage of the control supply voltage | AC/DC |
| control supply voltage at AC | |
| ● at 50 Hz rated value | 110 ... 230 V |
| ● at 60 Hz rated value | 110 ... 230 V |
| relative negative tolerance of the control supply voltage at AC at 60 Hz | 15 % |
| relative positive tolerance of the control supply voltage at AC at 60 Hz | 10 % |
| control supply voltage 1 at AC | |
| ● at 50 Hz | 110 ... 230 V |
| ● at 60 Hz | 110 ... 230 V |
| control supply voltage frequency | |
| ● 1 rated value | 50 Hz |
| ● 2 rated value | 60 Hz |
| relative negative tolerance of the control supply voltage at DC | 15 % |
| relative positive tolerance of the control supply voltage at DC | 10 % |
| control supply voltage 1 at DC rated value | 110 V |
| operating range factor control supply voltage rated value at DC | |
| ● initial value | 0.85 |
| ● full-scale value | 1.1 |
| operating range factor control supply voltage rated value at AC at 50 Hz | |
| ● initial value | 0.85 |
| ● full-scale value | 1.1 |
| operating range factor control supply voltage rated value at AC at 60 Hz | |
| ● initial value | 0.85 |
| ● full-scale value | 1.1 |
| control current at AC | |
| ● at 110 V in standby mode of operation | 8 mA |
| ● at 230 V in standby mode of operation | 6 mA |
| ● at 110 V when switching on | 40 mA |
| ● at 230 V when switching on | 25 mA |
| ● at 110 V during operation | 25 mA |
| ● at 230 V during operation | 14 mA |
| control current at DC | |
| ● in standby mode of operation | 4 mA |
| ● when switching on | 13 mA |
| ● during operation | 30 mA |
| power loss [W] in auxiliary and control circuit | |
| ● in switching state OFF | |
| — with bypass circuit | 1.4 W |
| ● in switching state ON | |
| — with bypass circuit | 3.22 W |
| Response times |
| ON-delay time | 90 ... 120 ms |
| OFF-delay time | 60 ... 90 ms |
| Power Electronics |
| operational current | |
| ● at 40 °C rated value | 7 A |
| ● at 50 °C rated value | 6.1 A |
| ● at 55 °C rated value | 5.2 A |
| ● at 60 °C rated value | 4.6 A |
| Installation/ mounting/ dimensions |
| mounting position | vertical, horizontal, standing (observe derating) |
| fastening method | screw and snap-on mounting onto 35 mm standard mounting rail |
| height | 100 mm |
| width | 22.5 mm |
| depth | 141.6 mm |
| required spacing | |
| ● with side-by-side mounting | |
| — forwards | 0 mm |
| — backwards | 0 mm |
| — upwards | 50 mm |
| — downwards | 50 mm |
| — at the side | 0 mm |
| ● for grounded parts | |
| — forwards | 0 mm |
| — backwards | 0 mm |
| — upwards | 50 mm |
| — at the side | 3.5 mm |
| — downwards | 50 mm |
| Ambient conditions |
| installation altitude at height above sea level maximum | 4 000 m; For derating see manual |
| ambient temperature | |
| ● during operation | -25 ... +60 °C |
| ● during storage | -40 ... +70 °C |
| ● during transport | -40 ... +70 °C |
| environmental category during operation according to IEC 60721 | 3K6 (no ice formation, only occasional condensation), 3C3 (no salt mist), 3S2 (sand must not get into the devices), 3M6 |
| relative humidity during operation | 10 ... 95 % |
| air pressure according to SN 31205 | 900 ... 1 060 hPa |
| Communication/ Protocol |
| protocol is supported | |
| ● PROFINET IO protocol | No |
| ● PROFIsafe protocol | No |
| product function bus communication | No |
| protocol is supported AS-Interface protocol | No |
| Connections/ Terminals |
| type of electrical connection | screw-type terminals for main circuit, screw-type terminals for control circuit |
| ● for main current circuit | screw-type terminals |
| ● for auxiliary and control circuit | screw-type terminals |
| wire length for motor unshielded maximum | 100 m |
| type of connectable conductor cross-sections | |
| ● for main contacts | |
| — solid | 1x (0,5 ... 4 mm²), 2x (0,5 ... 2,5 mm²) |
| — finely stranded with core end processing | 1x (0,5 … 4 mm²), 2x (0,5 … 1,5 mm²) |
| ● at AWG cables for main contacts | 1x (20 ... 12), 2x (20 ... 14) |
| connectable conductor cross-section for main contacts | |
| ● solid or stranded | 0.5 ... 4 mm² |
| ● finely stranded with core end processing | 0.5 ... 4 mm² |
| connectable conductor cross-section for auxiliary contacts | |
| ● solid or stranded | 0.5 ... 2.5 mm² |
| ● finely stranded with core end processing | 0.5 ... 2.5 mm² |
| type of connectable conductor cross-sections | |
| ● for auxiliary contacts | |
| — solid | 1x (0,5 ... 2,5 mm²), 2x (1,0 ... 1,5 mm²) |
| — finely stranded with core end processing | 1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1 mm²) |
| ● at AWG cables for auxiliary contacts | 1x (20 ... 14), 2x (18 ... 16) |
| AWG number as coded connectable conductor cross section | |
| ● for main contacts | 20 ... 12 |
| ● for auxiliary contacts | 20 ... 14 |
| UL/CSA ratings |
| yielded mechanical performance [hp] | |
| ● for single-phase AC motor | |
| — at 110/120 V rated value | 0.25 hp |
| — at 230 V rated value | 0.5 hp |
| ● for 3-phase AC motor | |
| — at 200/208 V rated value | 1 hp |
| — at 220/230 V rated value | 1.5 hp |
| — at 460/480 V rated value | 3 hp |
| operating voltage at AC | |
| ● according to UL rated value | 480 V |
| ● according to CSA rated value | 400 V |
| Certificates/ approvals |
Downloads and manuals |
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| Further information |
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| last modified: | 11/3/2021 |
Date 5/14/2022 | Subject to change without notice © Copyright Siemens 2022 |