Siemens SIRIUS 3RU Manual page 39

3RB3046 electronic overload relays, size S3, 70 mm width
Front view
3RB3046 overload relay equipment
A sealable transparent cover can be optionally mounted on the electronic overload relays in
the sizes S00, S0, S2 and S3 (Accessories (Page 123)). It stops the motor setting being
tampered with.
SIRIUS 3RU thermal overload relays / SIRIUS 3RB electronic overload relays
Manual, 09/2016, A5E03656507420A/RS-AB/003
3.7 3RB30 solid-state overload relays
Description
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.
④
Electronics test (device test):
Enables a test of all major device components and
functions.
⑤
Control circuit terminal (removable):
A screw-type or spring-loaded system can be used to
connect the control circuit terminal.
⑥
Main circuit terminal:
The main circuit can be connected using either the screw-
type connection system or through-hole technology with
straight-through transformer. Ring terminal lug connection
or busbar connection after removal of the box terminal
block is optionally possible.
⑦
Selector switch for manual/automatic RESET and RESET
button:
The slide switch is used to choose between manual and
automatic RESET.
⑧
Data Matrix code
⑨
Motor current setting:
The large rotary button provides an easy means of setting
the device to the rated motor current.
⑩
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
Product description
39