Selection Guide

11/83
Siemens Industry, Inc.
Industrial Controls Catalog
Product Category: SMRL
3TX71 plug-in relays
Function Relays, Interfaces and Converters
Siemens / Industrial Controls Previous folio: new page
SIRIUS
RELAYS
Selection and ordering data
Octal Based Timers
Contacts
Contact
Rating (A)
Coil
Voltage
Basic Relay Time Range Function
Uses Socket
3TX7144-
Uses Clip
3TX7144-
Socket
Access
Set
Panel Mount
Adaptor
3TX7144-
DIN Rail Mount
Adaptor
3TX7144-
DPDT 12
12 V AC/DC OND-DFOB-12 0.1S - 10h A, C 3TX7144-4E2 1L8 A — —
24 V AC/DC OND-DFOB-24 0.1S - 10h A, C 3TX7144-4E2 1L8 A — —
120 V AC/DC OND-DFOB-120 0.1S - 10h A, C 3TX7144-4E2 1L8 A — —
240 VAC OND-DFOB-240 0.1S - 10h A, C 3TX7144-4E2 1L8 A — —
DPDT 12
12 V AC/DC OFD-DFOB-12 0.1S - 10h D, E 3TX7144-4E3 1L8 A — —
24V AC/DC OFD-DFOB-24 0.1S - 10h D, E 3TX7144-4E3 1L8 A — —
120 V AC/DC OFD-DFOB-120 0.1S - 10h D, E 3TX7144-4E3 1L8 A — —
240 VAC OFD-DFOB-240 0.1S - 10h D, E 3TX7144-4E3 1L8 A — —
Square Based Timers
Contacts
Contact
Rating (A)
Coil
Voltage
Basic Relay Time Range Function
Uses Socket
3TX7144-
Uses Clip
3TX7144-
Socket
Access
Set
Panel Mount
Adaptor
3TX7144-
DIN Rail Mount
Adaptor
3TX7144-
DPDT 12
12 V AC/DC OND-DFSB-12 0.1S - 10h A, C 3TX7144-1E4 1L8 — — —
24V AC/DC OND-DFSB-24 0.1S - 10h A, C 3TX7144-1E4 1L8 — — —
120 V AC/DC OND-DFSB-120 0.1S - 10h A, C 3TX7144-1E4 1L8 — — —
240 VAC OND-DFSB-240 0.1S - 10h A, C 3TX7144-1E4 1L8 — — —
DPDT 12
12 V AC/DC OFD-DFSB-12 0.1S - 10h D, E 3TX7144-1E4 1L8 — — —
24V AC/DC OFD-DFSB-24 0.1S - 10h D, E 3TX7144-1E4 1L8 — — —
120 V AC/DC OFD-DFSB-120 0.1S - 10h D, E 3TX7144-1E4 1L8 — — —
240 VAC OFD-DFSB-240 0.1S - 10h D, E 3TX7144-1E4 1L8 — — —
Front Panel Timers
Contacts
Contact
Rating (A)
Coil
Voltage
Basic Relay Time Range Function
Uses Socket
3TX7144-
Uses Clip
3TX7144-
Socket
Access
Set
Panel Mount
Adaptor
3TX7144-
DIN Rail Mount
Adaptor
3TX7144-
DPDT
12
12-240V AC/DC OFD-DFPR-00 0.1S - 9990h A,B,C,D,E,F,G,H,I,J 3TX7144-4E3 1L25 — — —
SPDT 12-240V AC/DC OND-DFPR-01 0.1S - 9990h A,B,C,D,E,F,G,H,I,J 3TX7144-4E2 1L25 — — —
DPDT 12-240V AC/DC OND-DFPR-02 0.1S - 9990h A,B,C 3TX7144-4E2 1L25 — — —
Selecting Time Range
Time Range SW II SW III SW IV
0.1s - 1 s OFF OFF OFF
1s - 10s OFF OFF ON
10s - 100s OFF ON OFF
0.1m - 1m OFF ON ON
1m - 10m ON OFF OFF
10m - 100m ON OFF ON
0.1h - 1h ON ON OFF
1h - 10h ON ON ON
Selecting Function
Function for OND SW I
On Delay OFF
Interval ON
Function for OFD SW I
Off Delay OFF
One Shot ON
Note: See page 11/84 for socket accessories.
10IC11_79-99.indd 83 2/3/11 9:05 PM
• Revised •
03/21/2011