Siemens SIRIUS 3RU - Page 44

Product description
3.8 3RB31 solid-state overload relays
SIRIUS 3RU thermal overload relays / SIRIUS 3RB electronic overload relays
44 Manual, 09/2016, A5E03656507420A/RS-AB/003
3RB3133 electronic overload relays, size S2, 55 mm width
Front view
Description
3RB3133 overload relay equipment
Position digits
①
Connection for contactor mounting:
In terms of their electrical and mechanical features and their design,
these pins are perfectly compatible with the 3RT2 contactors for the
direct mounting of overload relays. Stand-alone assembly is also an
option (in some cases in conjunction with a stand-alone assembly
module).
②
Switch position indicator and TEST function for wiring:
Indicates a trip and facilitates testing of the wiring.
③
RESET button
A device set to manual RESET can be reset locally by pressing the
RESET button. In addition, an electronic remote RESET is integrated
into the 3RB31.
④
Tripping class setting/internal ground-fault detection (3RB313 only):
This rotary switch is used to set the required tripping class dependent
upon the starting conditions and activate internal ground-fault
detection.
⑤
Electronics test (device test):
Enables a test of all major device components and functions.
⑥
Control circuit terminal (removable):
A screw-type or spring-loaded system can be used to connect the
control circuit terminal.
⑦
Main circuit terminal:
The main circuit can be connected using either the screw-type
connection system or through-hole technology with straight-through
transformer.
⑧
Selector switch for manual/automatic RESET and RESET button:
The slide switch is used to choose between manual and automatic
RESET.
⑨
Motor current setting:
The large rotary button provides an easy means of setting the device
to the rated motor current.
⑩
Label / Data Matrix code (behind the label)
Terminal labels
2/T1
Main circuit terminals
4/T2
6/T3
95
NC contact (NC 95-96)
96
97
NO contact (NO 97-98)
98
A3-
Terminals for electrical remote RESET
A4+