Siemens SIRIUS User Manual

SIRIUS - SIRIUS 3RA load feeders
Manual, 09/2016, A5E03656507520A/RS-AB/003
15
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 different configuration 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 configuration 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.

Siemens SIRIUS Specifications

General

Product brand name	Siemens
Series	SIRIUS
Coil Voltage	24V DC, 110V AC, 230V AC
Switching Capacity	Up to 10A
Mounting Type	DIN rail
Product designation	SIRIUS
Contact Material	Silver alloy
Contact Rating	Varies depending on the specific SIRIUS relay model (e.g., 6 A at 250 V AC, 10 A at 250 V AC)
Switching Voltage	Varies depending on the specific SIRIUS relay model (e.g., 250 V AC, 400 V AC)
Mechanical Life	Up to 10 million operations
Electrical Life	Up to 100, 000 operations
Operating Temperature	-25°C to +55°C
Protection Class	IP20
Size of relay base	Varies depending on the specific SIRIUS relay model