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. 666-8015
Mfr. Part No.99.02.9.024.99
BrandFinder
TWD169.00
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Plug In Module PR1 Series, PR2 Series LDP- 12- 24DC 24V dc -
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TWD138.00
1 Bag of 5
Bag(s)
- - - - 6A
RS Stock No. 508-0556
Mfr. Part No.2833712
TWD319.00
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Plug In Module PR1 Series, PR2 Series LV- 12- 24UC 110V dc -
RS Stock No. 827-7182
Mfr. Part No.ZBRA1
TWD5,508.00
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Relay Antenna XB4R 22 mm (Dia) Control Unit, XB5R Harmony XB5R 24 → 240V ac -
New
RS Stock No. 213-0735
Mfr. Part No.3RF2920-0FA08-0KH0
BrandSiemens
TWD4,008.00
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- 3RF29 3RF2 24V dc -
RS Stock No. 776-1535
Mfr. Part No.093.60
BrandFinder
TWD53.00
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Separator 39 Series 93 Series - -
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Mfr. Part No.PTMG0024 2-1415036-1
TWD129.00
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LED Module RT Series - 24V dc -
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Mfr. Part No.2296058
TWD3,764.00
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- - PLC-V8/D15S/OUT 24V dc 3A
RS Stock No. 472-9143
Mfr. Part No.3RF2950-0HA16
BrandSiemens
TWD13,987.00
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Power Controller 3RF29 - 24V dc 50A
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Mfr. Part No.LZS:PTMU0730
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TWD267.00
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- Contactor Sirius LZS 110 → 230V ac -
New
RS Stock No. 210-4415
Mfr. Part No.3RF2920-0HA16
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TWD11,703.00
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- 3RF29 3RF2 24V -
RS Stock No. 776-1626
Mfr. Part No.072.503
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TWD76.00
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Separator Finder 500 mm Electrodes 72 Series - -
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RS Stock No. 213-0736
Mfr. Part No.3RF2920-0KA13
BrandSiemens
TWD11,182.00
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- 3RF29 3RF2 230V -
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BrandOmron
TWD1,850.00
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- G2RV-SR500 Slim I/O Relay, G2RV-SR501 Slim I/O Relay, G3RV-SR500 Slim I/O Relay - - -
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Mfr. Part No.PTML0024 5-1415036-1
TWD119.00
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Module RT78724, RT78726 - 24V dc -
RS Stock No. 512-922
Mfr. Part No.PTML0524 6-1415036-1
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LED Plug In Module RT78724, RT78726 - 6 → 24V ac/dc -
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TWD645.00
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Power Module EMD-SL Series Monitoring Relay EMD-SL-PS-24DC - -
RS Stock No. 776-1686
Mfr. Part No.093.01
BrandFinder
TWD44.00
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Separator 93 Series 93 Series - -