Relay Interfaces

Relay interfaces are devices for housing relays. They're a convenient way to organise and operate relays and they can also improve relay performance.

Every relay contains contacts, which are pieces of electrically conductive material, usually metal. When a pair of contacts touch, they pass an electrical current, making the switch ’closed'. When the contacts separate, the switch is ’open' and the current stops flowing. As well as housing relays, relay interfaces can be used to operate a relay's contacts.

How do relay interfaces work?

Relay interfaces can be convenient ways to operate relays. Relays are inserted into the slot or slots in the interface and they stay snugly mounted there until they're ejected. The relay interfaces commonly contain switches that make the contacts in each relay ’closed’ (on) or ’open’ (off).

Relay interfaces can also contain protection circuits that expand the range of relay input voltage.

Types of relay interfaces

Each relay interfaces is compatible with a specific relay, or several different relays. The relays may be stacked pyramidally or slotted in side by side. Relay interfaces also differentiated by their voltages, which can be AC, DC or AC/DC.


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Description Price Accessory Type For Use With Series Voltage Current Rating
RS Stock No. 251-9455
Mfr. Part No.2966016
MYR35.43
Each
units
- - PLC-BSC 24V dc -
RS Stock No. 494-0744
Mfr. Part No.PTML0024 5-1415036-1
MYR18.62
Each
units
Module RT78724, RT78726 - 24V dc -
RS Stock No. 231-3257
Mfr. Part No.84130105
BrandCrouzet
MYR248.10
Each
units
- - - 32V dc 5A
RS Stock No. 666-8015
Mfr. Part No.99.02.9.024.99
BrandFinder
MYR19.39
Each
units
- - 99 Series 24V dc -
RS Stock No. 508-0203
Mfr. Part No.2833657
MYR19.93
Each
units
Plug In Module PR1 Series, PR2 Series LDP- 12- 24DC 24V dc -
RS Stock No. 153-220
Mfr. Part No.P2RVC-8-O-F
BrandOmron
MYR191.49
Each
units
Interface Slim Relay - - -
RS Stock No. 472-9171
Mfr. Part No.3RF2950-0HA13
BrandSiemens
MYR1,277.36
Each
units
Power Controller 3RF29 - 230V ac 50A
RS Stock No. 410-8035
Mfr. Part No.2296058
MYR600.31
Each
units
- - PLC-V8/D15S/OUT 24V dc 3A
RS Stock No. 827-7182
Mfr. Part No.ZBRA1
MYR858.66
Each
units
Relay Antenna XB4R 22 mm (Dia) Control Unit, XB5R - 24 → 240V ac -
RS Stock No. 111-3085
Mfr. Part No.P2RVC-8-O-7-1
BrandOmron
MYR275.39
Each
units
- G2RV-SR700 Slim I/O Relay, G2RV-SR701 Slim I/O Relay, G3RV-SR700 Slim I/O Relay - - -
RS Stock No. 111-3086
Mfr. Part No.P2RVC-8-I-7-1
BrandOmron
MYR247.83
Each
units
- G2RV-SR700-AP Slim I/O Relay - - -
RS Stock No. 776-1686
Mfr. Part No.093.01
BrandFinder
MYR6.25
Each
units
Separator 93 Series 93 Series - -
RS Stock No. 494-0700
Mfr. Part No.PTMG0024 2-1415036-1
MYR22.70
Each
units
LED Module RT Series - 24V dc -
RS Stock No. 111-3084
Mfr. Part No.P2RVC-8-I-5-1
BrandOmron
MYR289.19
Each
units
- G2RV-SR500-AP Slim I/O Relay - - -
RS Stock No. 512-922
Mfr. Part No.PTML0524 6-1415036-1
MYR12.46
Each
units
LED Plug In Module RT78724, RT78726 - 6 → 24V ac/dc -
RS Stock No. 472-9143
Mfr. Part No.3RF2950-0HA16
BrandSiemens
MYR1,334.40
Each
units
Power Controller 3RF29 - 24V dc 50A
RS Stock No. 776-1535
Mfr. Part No.093.60
BrandFinder
MYR6.62
Each
units
Separator 39 Series 93 Series - -
RS Stock No. 776-1626
Mfr. Part No.072.503
BrandFinder
MYR11.73
Each
units
Separator Finder 500 mm Electrodes 72 Series - -
RS Stock No. 508-0556
Mfr. Part No.2833712
MYR48.28
Each
units
Plug In Module PR1 Series, PR2 Series LV- 12- 24UC 110V dc -
RS Stock No. 831-6485
Mfr. Part No.RV8H-S-AD24
BrandIdec
MYR59.56
Each
units
- - - - -
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MurrElektronik RMM series interface relay module featuring coil/contact ...
Description:
MurrElektronik RMM series interface relay module featuring coil/contact separation and LED status indicator. The RMM modules are a complete relay module without the need for seperate sockets, providing a quick simple installation option. Status LED Screw or spring clamp terminals ...
Pre-assembled relay module with screw connection, consisting of: ...
Description:
Pre-assembled relay module with screw connection, consisting of: relay base, safety relay with force-guided contacts, pluggable display / interference suppression module, and retaining bracket, contact type: 2 changeover contacts, input voltage: 24 V DC.
General purpose relays that are an ideal interface ...
Description:
General purpose relays that are an ideal interface for PLC and electronic systems. Din Rail mountingIntegral coil indication and protection circuit.
Omron P2RVC series PLC interface units for G2RV-SR ...
Description:
Omron P2RVC series PLC interface units for G2RV-SR and G3RV-SR slim I/O relays. PLC interface units connect to the relay socket terminals and then connect to a PLC using just one PLC connection cable to reduce wiring.