Interface and switching relays

  Latching/interface and switching relays are ideal connecting links between the highly-sensitive and low-power logic circuitry of a PLC, control system or process computer and the raw environment of the power level on a machine such as motor drives, magnetic clutches or hydraulic cylinders. The relays ensure a metallic isolation between logic and power circuitry.

There is a differentiation between bistable devices (latching relay) and monostable devices (cinterface or switching relay). The latter are available as power/industrial relays up to 16 A with pin base and socket for top hat rail mounting or as complete solution for installation in switch cabinets and distribution boards, or as positive-action devices for safety applications.

Latching, interface and switching relays
Coil voltages partly possible up to 240 V AC/DC
FunctionNumber
of
systems
Output
contacts,
max.
Initiator
triggering
Suppressor circuit on the coil inputBreaking
current Ith
max. [A]
StyleWidth (of the
socket if
applicable)
[mm]
Type
Latching relay12C/O6Switch cabinet 22.5MK 8852
Latching relay14NO, 4NC8Switch cabinet 45AD 8851
Stepping relay3NO+10Switch cabinet 45BA 7632
Interface relay / input-output11NO3Distribution board9IG 3051
Interface relay / input-output11C/O5Switch cabinet 22.5ML 3045
Interface relay / input-output11NO, 1NC++5Switch cabinet 11.5CA 3056
Interface relay / input-output11C/O, 2NO++5Switch cabinet 11.5CB 3056
Interface relay / input-output12C/O++5Switch cabinet 11.5CC 3056
Interface relay / input-output14C/O++5Switch cabinet 22.5MK 8804N
Interface relay / input-output12C/O++10Distribution board,
Switch cabinet
17.5IK 3076, SK 3076
Interface relay / input-output12C/O10Installationsverteiler17.5IK 8802
Switching relay / input-output12C/O++16Distribution board17.5IK 8701
Switching relay / input-output13C/O++16Distribution board35IL 8701
Switching relay / input-output14C/O++16Distribution board52IN 8701
Switching relay / input-output1-82C/O
each
++8Distribution board17.5; 140IK 3070, I_3070
Interface relay12C/O+5Switch cabinet 22.5ML 3059
Output switching relay system 41C/O
each
+10Distribution board,
Switch cabinet
70IP 3070/022,
SP 3070/022
Relay for plug-type socket11C/O++10PCB relay fitting to:
HC 3093
plug-type sockets
ET 1415.041/ .044/ .047
Function modules
ET 1415.911/ .912
15.5OA 5672
Relay for plug-type socket11C/O++1015.5OA 5682
Relay for plug-type socket12C/O++515.5OA 5668
Bistable relay for plug-type socket11C/O++1615.5OB 5694
Interface module with plug-type socket12C/O1615.8HC 3093
NO = normally open contact, NC= normally closed contact, C/O = change over
Following product are also available:
ML 3045
Interface relays: forcibly guided
1-channel, optionally also suited for low loads Coil voltages partly possible up to 240 V AC/DC
FunktionOutput
contacts,
max.
Suppressor circuit
on the coil input
Breaking current
Ith max. [A]
StyleWidth (of the socket if applicable)
[mm]
Type
Interface module,
with plug-type socket
4+5PCB relay, with plug-type socket18HC 3096
Interface module,
with plug-type socket
2+5Kartenrelais, mit Steckfassung38HC 3098
Interface module,
with plug-type socket
4+8PCB relay, with plug-type socket38HL 3094
Interface module,
with plug-type socket
6+5PCB relay, with plug-type socket38HL 3096
Interface module,
with plug-type socket
8optionally10PCB relay, with plug-type socketHO 3094,
HO 3095
Interface module,
with plug-type socket
1)1)1)PCB relay, with plug-type socket38HC 3093
Interface module 2+8Housing for distribution board17.5IK 3079
Interface module6+8Housing for distribution board,
Housing for switch cabinet
70IP 3078,
SP 3078
Interface module6+5Housing for switch cabinet22.5LG 3096,
MK 3096N
Relay, optionally
with plug-type socket
2+5PCB relay fitting to:
plug-type sockets
ET 1415.041/ .044/ .047
Function modules
ET 1415.911/ .912/. 913
15.5OA 5669
1) Data depending on pcb relay that is used