3RW304. datasheet(39/40 Pages) SIEMENS

39 / 40 page

Boundary conditions

CLASS 10 (normal starting):

3RW30:

Maximum start-up time 3 sec., with 300 % starting current, 20 starts/hour

3RW40/44:

Maximum start-up time 10 sec., current limiting 300 %, 5 starts/hour

CLASS 20 (heavy-duty starting):

3RW402., 3RW403., 3RW404.:

Maximum start-up time 20 sec., current limiting set to 300 %, maximum 5 starts/hour

3RW405., 3RW407., 3RW44:

Maximum start-up time 40 sec., current limiting set to 350 %, maximum 1 start/hour

CLASS 30 (ultra-heavy-duty starting):

Maximum start-up time 60 sec., current limiting set to 350 %, maximum 1 start/hour

General boundary conditions:

ON period 30 %

Stand-alone assembly

Installation altitude: maximum 1000 m / 3280 ft

Ambient temperature:

kW: 40 °C / 104 °F

hp: 50 °C / 122 °F

The stated motor ratings are only approximate values. The soft starter’s dimensioning should always exceed

the motor current (rated operating current). With deviating conditions, a larger device may have to be

selected.

Motor rating data are based on DIN 42973 (kW) and NEC 96/UL508 (hp).

Further details and information (e.g. on accessories and spare parts) can be found in the catalogs LV1 and

LV1 T “Low-Voltage Controls and Distribution” and in the current online editions of these catalogs on the

Internet at:

www.siemens.com/lowvoltage/catalogs

General and further information on SIRIUS soft starters is available on the Internet at:

www.siemens.com/softstarter

For optimum dimensioning (in case of deviations from the described boundary conditions),

we recommend application of the selection and simulation program

“Win-Soft Starter“.

(Order No.: E20001-D1020-P302-V2-7400)

Win-Soft Starter can also be ordered or downloaded via the following link:

www.siemens.com/lowvoltage/demosoftware

Alternatively, contact our

Technical Assistance: +49 911 895 5900

or write an e-mail to

technical-assistance@siemens.com

3RW304. Datasheet(PDF) 39 Page - Siemens Semiconductor Group