Siemens SIRIUS 3RA

Product description
3
3.1 Overview
Fuseless load feeders
Fuseless load feeders are device combinations comprising a 3RV motor starter protector for
overload and short-circuit protection and a 3RT contactor for normal switching. The SIRIUS
portfolio features two di󹪜erent con󹪝guration options for fuseless load feeders.
• 3RA2 tested pre-assembled complete devices (sizes S00 to S2 only)
• Tested combinations of individual devices
3.2 Device versions
The modular standard components in the SIRIUS modular system are ideally matched and
support the simple con󹪝guration of fuseless load feeders. The load feeders are also available as
3RA2 complete devices.
Both options are characterized by the following features.
• Type of coordination 1 or 2
• Rated control supply voltage
• Mounting on busbar or DIN rail
• Screw or spring-loaded connection
A detailed overview of the fuseless load feeders product range appears below.
Types of coordination
Fuseless load feeders up to 38 A (discrete con󹪝guration of individual devices with connecting
cables) and 32 A (pre-assembled complete devices or con󹪝guration with link module) can be
assembled in sizes S00 and S0.
An assembly up to 80 A (discrete con󹪝guration of individual devices with connecting cables) and
65 A (as pre-assembled complete devices, or con󹪝guration with link module) is possible in
size S2.
An assembly up to 100 A (discrete con󹪝guration of individual devices with connecting cables) is
possible in size S3.
SIRIUS 3RA Load Feeders
Equipment Manual, 02/2022, A5E03656507520A/RS-AC/004 15