SIRIUS soft starter S12 280 A, 200 kW/500 V, 40 °C 400-600 V AC, 230 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5074-6AB15<<
Product Type: Industrial Automation Component
General
| Article number |
3RW4074-6BB45 |
General technical data
| product brand name |
SIRIUS |
| product designation |
Soft starter |
product feature
| ● integrated bypass contact system |
Yes |
| ● thyristors |
Yes |
product function
| ● intrinsic device protection |
Yes |
| ● motor overload protection |
Yes |
| ● evaluation of thermistor motor protection |
No |
| ● external reset |
Yes |
| ● adjustable current limitation |
Yes |
| ● inside-delta circuit |
No |
| product component motor brake output |
No |
| insulation voltage rated value |
600 V |
| degree of pollution |
3, acc. to IEC 60947-4-2 |
| reference code according to EN 61346-2 |
Q |
| reference code according to DIN 40719 extended according to IEC 204-2 according to IEC 750 |
G |
operational current
| ● at 40 °C rated value |
280 A |
| ● at 50 °C rated value |
248 A |
| ● at 60 °C rated value |
215 A |
● at 400 V
| — at standard circuit at 40 °C rated value |
160 kW |
● at 500 V
| — at standard circuit at 40 °C rated value |
200 kW |
| operating frequency rated value |
50 ... 60 Hz |
| relative negative tolerance of the operating frequency |
-10 % |
| relative positive tolerance of the operating frequency |
10 % |
| operating voltage at standard circuit rated value |
400 ... 600 V |
| relative negative tolerance of the operating voltage at standard circuit |
-15 % |
| relative positive tolerance of the operating voltage at standard circuit |
10 % |
| minimum load [%] |
20 % |
| adjustable motor current for motor overload protection minimum rated value |
130 A |
| continuous operating current [% of Ie] at 40 °C |
115 % |
| power loss [W] at operational current at 40 °C during operation typical |
90 W |
Control circuit/ Control
| type of voltage of the control supply voltage |
AC |
| control supply voltage frequency 1 rated value |
50 Hz |
| control supply voltage frequency 2 rated value |
60 Hz |
| relative negative tolerance of the control supply voltage frequency |
-10 % |
| relative positive tolerance of the control supply voltage frequency |
10 % |
control supply voltage 1 at AC
| ● at 50 Hz rated value |
230 V |
| ● at 60 Hz rated value |
230 V |
| relative negative tolerance of the control supply voltage at AC at 50 Hz |
-15 % |
| relative positive tolerance of the control supply voltage at AC at 50 Hz |
10 % |
| 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 % |
| display version for fault signal |
red |
Mechanical data
| size of engine control device |
S12 |
| width |
160 mm |
| height |
230 mm |
| depth |
278 mm |
| fastening method |
screw fixing |
| mounting position |
With additional fan: With vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back Without additional fan: With vertical mounting surface +/-10° rotatable, with vertical mounting surface +/- 10° t |
required spacing with side-by-side mounting
| ● upwards |
100 mm |
| ● at the side |
5 mm |
| ● downwards |
75 mm |
| wire length maximum |
300 m |
| number of poles for main current circuit |
3 |
type of electrical connection
| ● for main current circuit |
busbar connection |
| ● for auxiliary and control circuit |
screw-type terminals |
| number of NC contacts for auxiliary contacts |
0 |
| number of NO contacts for auxiliary contacts |
2 |
| number of CO contacts for auxiliary contacts |
1 |
type of connectable conductor cross-sections for main contacts for box terminal using the front clamping point
| ● finely stranded with core end processing |
70 ... 240 mm² |
| ● finely stranded without core end processing |
70 ... 240 mm² |
| ● stranded |
95 ... 300 mm² |
type of connectable conductor cross-sections for main contacts for box terminal using the back clamping point
| ● finely stranded with core end processing |
120 ... 185 mm² |
| ● finely stranded without core end processing |
120 ... 185 mm² |
| ● stranded |
120 ... 240 mm² |
type of connectable conductor cross-sections for main contacts for box terminal using both clamping points
| ● finely stranded with core end processing |
min. 2x 50 mm², max. 2x 185 mm² |
| ● finely stranded without core end processing |
min. 2x 50 mm², max. 2x 185 mm² |
| ● stranded |
max. 2x 70 mm², max. 2x 240 mm² |
type of connectable conductor cross-sections for AWG cables for main contacts for box terminal
| ● using the back clamping point |
250 ... 500 kcmil |
| ● using the front clamping point |
3/0 ... 600 kcmil |
| ● using both clamping points |
min. 2x 2/0, max. 2x 500 kcmil |
type of connectable conductor cross-sections for DIN cable lug for main contacts
| ● finely stranded |
50 ... 240 mm² |
| ● stranded |
70 ... 240 mm² |
type of connectable conductor cross-sections for auxiliary contacts
| ● solid |
2x (0.5 ... 2.5 mm²) |
| ● finely stranded with core end processing |
2x (0.5 ... 1.5 mm²) |
type of connectable conductor cross-sections for AWG cables
| ● for main contacts |
2/0 ... 500 kcmil |
| ● for auxiliary contacts |
2x (20 ... 14) |
| ● for auxiliary contacts finely stranded with core end processing |
2x (20 ... 16) |
Ambient conditions
| installation altitude at height above sea level |
5 000 m |
environmental category
| ● during transport according to IEC 60721 |
2K2, 2C1, 2S1, 2M2 (max. fall height 0.3 m) |
| ● during storage according to IEC 60721 |
1K6 (only occasional condensation), 1C2 (no salt mist), 1S2 (sand must not get inside the devices), 1M4 |
| ● during operation according to IEC 60721 |
3K6 (no formation of ice, no condensation), 3C3 (no salt mist), 3S2 (sand must not get into the devices), 3M6 |
ambient temperature
| ● during operation |
-25 ... +60 °C |
| ● during storage |
-40 ... +80 °C |
| derating temperature |
40 °C |
| protection class IP on the front according to IEC 60529 |
IP00; IP20 with cover |
| touch protection on the front according to IEC 60529 |
finger-safe, for vertical contact from the front with cover |
● at 460/480 V
| — at standard circuit at 50 °C rated value |
200 hp |
● at 575/600 V
| — at standard circuit at 50 °C rated value |
250 hp |
| contact rating of auxiliary contacts according to UL |
B300 / R300 |
Environment
| Environmental Confirmations |
Yes |
| Siemens EcoTech Profile (SEP) |
Yes |
General Product Approval
| CCC |
Yes |
| cULus |
Yes |
| EAC |
Yes |
| EU declaration of conformity |
Yes |
| KC |
Yes |
| RCM |
Yes |
For use in hazardous locations
Test Certificates
| Special Test Certificate |
Yes |
Maritime application
| DNV (Det Norske Veritas) |
Yes |
| LR (Lloyds Register) |
Yes |
other
| Confirmation |
Yes |
| Confirmation |
Yes |
| Chinese Quality Checkmark |
Yes |
Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)
https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RW4074-6BB45&lang=en
| last modified: |
4/1/2025 |
| Date8/1/2026 |
Subject to change without notice© Copyright Siemens 2026 |
Applications
This Industrial Automation Component is designed for industrial automation applications, offering reliable performance and compatibility with Siemens automation systems. Suitable for manufacturing, process control, and building automation environments.
