The Siemens 3RW4046-1BB14 is described by Siemens as: SIRIUS soft starter S3 80 A, 45 kW/400 V, 40 °C 200-480 V AC, 110-230 V AC/DC Screw terminals.
SIRIUS 3RW soft starters ramp the motor voltage up and down so that pumps, fans, compressors and conveyors start without the current peak and mechanical shock of a direct-on-line start.
See our Siemens range.
Technical data
| Siemens order number | 3RW4046-1BB14 |
|---|---|
| Ambient temperature (operation) | -25 … +60 °C |
| Dimensions (W x H x D) | 70 x 170 x 190 mm |
| Condition | New, original Siemens |
Features at a glance
- SIRIUS soft starter S3 80 A
- 45 kW/400 V
- 40 °C 200-480 V AC
- 110-230 V AC/DC Screw terminals
Typical applications
- Compressors
- Conveyor belts
- Pumps and fans
- Replacing a star-delta starter
- Replacing a failed soft starter
Compatibility and replacement
Compare the rated current, motor power, control supply voltage and connection type (screw or spring-loaded) with the old soft starter; the Siemens data sheet above gives the exact values.
Before you replace it
- Compare the full order number 3RW4046-1BB14 with the label on the old unit, including the last digits (they identify the version).
- Look for signs of overvoltage, water or heat damage in the cabinet so the new part does not fail for the same reason.
- Check the mounting (DIN rail or screw fixing) and the terminal type (screw or spring-loaded) of the old unit.
Frequently asked questions
Does it need an overload relay?
That depends on the model: check the protective functions listed in the Siemens data sheet, and add a 3RU2 overload relay or 3RV2 breaker where motor protection is not integrated.
Can it reduce the starting current?
Yes. Soft starters limit the inrush current by ramping the voltage; the achievable reduction depends on the load and the settings.
Can you help me identify the right replacement?
Yes. Send us a photo of the label of the old part, or its full order number, and we will confirm the exact match or the official successor before quoting.
Is it new and original?
Yes. We supply new, original parts in the manufacturer packaging, with a 1-year warranty.
Do you ship to my country, and what is the warranty?
Yes. RendatSP ships worldwide from Yiwu, China, by air in 5 to 7 days once the part is ready, and every part carries a 1-year warranty. Send the order number and quantity on WhatsApp and we will reply with a quotation.
How to order
Message us the order number and quantity. For breakdowns, tell us the delivery address and we will offer the fastest shipping option. If the exact part is discontinued, we confirm the official successor before quoting.
Need it fast? Send the order number, quantity and delivery country on WhatsApp or through the inquiry form and we reply with a quotation the same working day. All parts are new and original, covered by a 1-year warranty, and ship worldwide by air in 5 to 7 days once ready (shipping, payment and warranty). Local agents: Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.
