Siemens 3RP25

Description
3.3 Device versions
3RP25 Time Relays
Manual, 09/2019, A5E31947765002A/RS-AC/003
15
3.3 Device versions
SIRIUS 3RP25 timing relays are available in the following versions:
● Single function units, e.g. "ON-delay" function
● Multifunction units
Sizes
The overall height of 100 mm has been standardized with the other system components, and
the overall depth has been standardized for all widths to 90 mm. Refer to Section
"Dimension drawings 3RP25 devices (Page 85)" for the precise dimensions. The timing
relays are designed in two widths:
● 17.5 mm
This width is used predominantly for relays with one contact element (e.g. 1 CO contact)
and 8 possible connecting terminals.
● 22.5 mm
This width is used predominantly for relays with several contact elements (e.g. 2 CO
contacts) and 12 possible connecting terminals.
Characteristics
The features of the 3RP25 timing relay are:
● 1 CO contact (single function and multifunction with 13 functions)
● 1 NO semiconductor contact (two-wire timing relay, multifunction with 13 functions)
● 1 relay, 2 CO contacts, positively-driven (multifunction with 13 functions)
● 2 CO contacts (multifunction with 27 functions)
● 7 switchable time ranges
● Adjustable operating time from 0.05 s to 100 h
● Wide voltage range version 12 ... 240 V AC/DC
● Single function unit for the following functions:
– ON-delay with 1 or 2 CO contacts
– OFF-delay with control signal and 1 CO contact
– OFF-delay without control signal and 1 or 2 CO contacts
– Asymmetrical flasher relay (clock-pulse; pulse and interval separately adjustable) with
1 CO contact
– Star-delta (wye-delta) with 2 or 3 NO contacts, with and without overtravel function
– 2-wire ON-delay with semiconductor output