Siemens SIRIUS System Manual

3RU11, 3RB10, and 3RB12 overload relays
SIRIUS System Manual
GWA 4NEB 430 0999-02b
4-9
Overview: Performance
ranges
The following table provides an overview of the assignment of the overload
relays to the contactors together with their ratings:
Table 4-4: Assignment of the overload relays to the contactors
X = direct attachment
¿
= stand-alone installation (device with bar-type transformer)
Snapped onto a 35 mm rail
Fuses
The maximum permissible fuse values for overload relays are dependent on:
• The selected setting range (the smaller the setting range, the lower the
fuse value).
• The maximum permissible fusing of the contactor or other devices in the
circuit (e.g. soft starter or even the motor supply lead).
In the case of fuse values in acc. with coordination type 2, the contactor and
overload relay can be reused after a short circuit.
The type plates on the devices provide information on the permissible fuse
values. In addition, you will find detailed information in part 4 of the low-volt-
age switching technology (NSK) catalog.
Starter protection
switch
The operating current of the instantaneous short-circuit release should be
12 times the value of the rated motor current (the current set on the over-
load relay). The corresponding 3RV13 starter circuit breakers can be
selected from part 2 of the low-voltage switching technology (NSK) catalog.
3RU1116
3RB1016
3RU1126
3RB1026
3RU1136
3RB1036
3RU1146
3RB1046
3RB1246
3RB125
3RB126
Max. set
current
12A 25 A 50A 100 A 100 A 820 A
Contactor Frame size
Width
S00
45 mm
S0
45 mm
S2
55 mm
S3
70 mm 70 mm
3 kW 3RT1015 S00 X
¿
4 kW 3RT1016 S00 X
¿
5.5 kW 3RT1017 S00 X
¿
5.5 kW 3RT1024 S0 X
¿
7.5 kW 3RT1025 S0 X
¿
11 kW 3RT1026 S0 X
¿
15 kW 3RT1034 S2 X
¿
18.5 kW 3RT1035 S2 X
¿
22 kW 3RT1036 S2 X
¿
30 kW 3RT1044 S3 X
¿
37 kW 3RT1045 S3 X
¿
45 kW 3RT1046 S3 X
¿
>45 kW 3TF5/
3TF6
6-12
¿
X

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