Siemens SIRIUS 3RU - Page 30

Product description
3.5 3RB20 electronic overload relays
SIRIUS 3RU thermal overload relays / SIRIUS 3RB electronic overload relays
30 Manual, 09/2016, A5E03656507420A/RS-AB/003
3RB2066 electronic overload relays, size S10 / 12, 145 mm width
Front view
3RB2066 overload relay equipment
Position digits
①
Connection for contactor mounting:
In terms of their electrical and mechanical features and their design, these busbars are perfectly compatible with
3RT1 contactors for the direct mounting of overload relays.
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. On the 3RB21 an electronic
remote RESET is integrated.
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 connection:
The following variants of connection to the main circuit are possible:
• Bus connection system
• Connection with box terminal block
⑦
Selector switch for manual/automatic RESET and RESET button:
The slide switch is used to choose between manual and automatic RESET.