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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RS Stock No. 666-8015
Mfr. Part No.99.02.9.024.99
BrandFinder
£3.28
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- - 99 Series 24V dc -
RS Stock No. 251-9455
Mfr. Part No.2966016
£4.37
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- - PLC-BSC 24V dc -
RS Stock No. 410-8035
Mfr. Part No.2296058
£85.16
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- - PLC-V8/D15S/OUT 24V dc 3A
RS Stock No. 827-7182
Mfr. Part No.ZBRA1
£157.62
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Relay Antenna XB4R 22 mm (Dia) Control Unit, XB5R - 24 → 240V ac -
RS Stock No. 494-0744
Mfr. Part No.PTML0024 5-1415036-1
£2.78
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Module RT78724, RT78726 - 24V dc -
RS Stock No. 512-881
Mfr. Part No.PTML0024 5-1415036-1
£1.55
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Module RT78724, RT78726 - 24V dc -
RS Stock No. 153-220
Mfr. Part No.P2RVC-8-O-F
BrandOmron
£39.82
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Interface Slim Relay - - -
RS Stock No. 776-1535
Mfr. Part No.093.60
BrandFinder
£1.02
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Separator 39 Series 93 Series - -
RS Stock No. 494-0700
Mfr. Part No.PTMG0024 2-1415036-1
£1.73
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LED Module RT Series - 24V dc -
RS Stock No. 231-3257
Mfr. Part No.84130105
BrandCrouzet
£44.01
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- - - 32V dc 5A
RS Stock No. 472-9171
Mfr. Part No.3RF2950-0HA13
BrandSiemens
£225.24
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Power Controller 3RF29 - 230V ac 50A
RS Stock No. 776-1686
Mfr. Part No.093.01
BrandFinder
£0.98
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Separator 93 Series 93 Series - -
RS Stock No. 472-9288
Mfr. Part No.3RF2920-0HA13
BrandSiemens
£186.01
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Power Controller 3RF29 - 230V ac 20A
RS Stock No. 111-3085
Mfr. Part No.P2RVC-8-O-7-1
BrandOmron
£40.81
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
£1.59
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LED Plug In Module RT78724, RT78726 - 6 → 24V ac/dc -
RS Stock No. 472-9143
Mfr. Part No.3RF2950-0HA16
BrandSiemens
£236.06
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Power Controller 3RF29 - 24V dc 50A
RS Stock No. 618-8881
Mfr. Part No.2966236
£3.06
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RS Stock No. 508-0203
Mfr. Part No.2833657
£1.83
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Plug In Module PR1 Series, PR2 Series LDP- 12- 24DC 24V dc -
RS Stock No. 111-3083
Mfr. Part No.P2RVC-8-O-5-1
BrandOmron
£42.86
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Units
- G2RV-SR500 Slim I/O Relay, G2RV-SR501 Slim I/O Relay, G3RV-SR500 Slim I/O Relay - - -
RS Stock No. 776-1626
Mfr. Part No.072.503
BrandFinder
£1.68
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Separator Finder 500 mm Electrodes 72 Series - -
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