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
€5.34
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- - PLC-BSC 24V dc -
RS Stock No. 472-9288
Mfr. Part No.3RF2920-0HA13
BrandSiemens
€241.81
Each
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Power Controller 3RF29 - 230V ac 20A
RS Stock No. 494-0700
Mfr. Part No.PTMG0024 2-1415036-1
€4.51
Each
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LED Module RT Series - 24V dc -
RS Stock No. 472-9171
Mfr. Part No.3RF2950-0HA13
BrandSiemens
€292.81
Each
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Power Controller 3RF29 - 230V ac 50A
RS Stock No. 410-8035
Mfr. Part No.2296058
€34.18
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- - PLC-V8/D15S/OUT 24V dc 3A
RS Stock No. 512-881
Mfr. Part No.PTML0024 5-1415036-1
€2.46
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Module RT78724, RT78726 - 24V dc -
RS Stock No. 776-1686
Mfr. Part No.093.01
BrandFinder
€1.30
Each
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Separator 93 Series 93 Series - -
RS Stock No. 494-0744
Mfr. Part No.PTML0024 5-1415036-1
€3.67
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Module RT78724, RT78726 - 24V dc -
RS Stock No. 231-3257
Mfr. Part No.84130105
BrandCrouzet
€57.21
Each
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- - - 32V dc 5A
RS Stock No. 111-3083
Mfr. Part No.P2RVC-8-O-5-1
BrandOmron
€61.00
Each
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- G2RV-SR500 Slim I/O Relay, G2RV-SR501 Slim I/O Relay, G3RV-SR500 Slim I/O Relay - - -
New
RS Stock No. 192-1130
Mfr. Part No.1SVR405651R3000
BrandABB
€0.02
Each
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Socket 2 or 4 c/o (SPDT) Contacts CR-M Relays - - -
RS Stock No. 111-3084
Mfr. Part No.P2RVC-8-I-5-1
BrandOmron
€61.00
Each
units
- G2RV-SR500-AP Slim I/O Relay - - -
RS Stock No. 153-220
Mfr. Part No.P2RVC-8-O-F
BrandOmron
€49.60
Each
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Interface Slim Relay - - -
RS Stock No. 111-3085
Mfr. Part No.P2RVC-8-O-7-1
BrandOmron
€58.50
Each
units
- G2RV-SR700 Slim I/O Relay, G2RV-SR701 Slim I/O Relay, G3RV-SR700 Slim I/O Relay - - -
RS Stock No. 512-922
Mfr. Part No.PTML0524 6-1415036-1
€2.86
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LED Plug In Module RT78724, RT78726 - 6 → 24V ac/dc -
New
RS Stock No. 192-1129
Mfr. Part No.1SNA645071R0000
BrandABB
€0.02
Each
units
Interface Relay - - 24V dc -
RS Stock No. 508-0556
Mfr. Part No.2833712
€5.11
Each
units
Plug In Module PR1 Series, PR2 Series LV- 12- 24UC 110V dc -
RS Stock No. 111-3086
Mfr. Part No.P2RVC-8-I-7-1
BrandOmron
€58.50
Each
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- G2RV-SR700-AP Slim I/O Relay - - -
RS Stock No. 801-6306
Mfr. Part No.2885731
€17.50
Each
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Power Module EMD-SL Series Monitoring Relay EMD-SL-PS-120AC - -
RS Stock No. 508-0203
Mfr. Part No.2833657
€4.43
Each
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Plug In Module PR1 Series, PR2 Series LDP- 12- 24DC 24V dc -
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Murr Elektronik RMM series interface relay module featuring ...
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Murr Elektronik 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 ...
PLC-INTERFACE, consisting of a relay base and pluggable ...
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ABB R910 series relay interface modules are an ideal interface for PLC and electronic systems DIN 1 & 3 Rail Mounting Rising clamp technology Takes the place of standard terminal and relay unit Saves wiring and space Contact rating 5A/250Va.c.With ...
ABB R600 series interface relays are used for ...
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