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
HK$144.19
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HK$74.53
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1 Bag of 5
Bag(s)
- - - - 6A
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Mfr. Part No.PTML0024 5-1415036-1
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Module RT78724, RT78726 - 24V dc -
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Mfr. Part No.072.503
BrandFinder
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Separator Finder 500 mm Electrodes 72 Series - -
RS Stock No. 111-3084
Mfr. Part No.P2RVC-8-I-5-1
BrandOmron
HK$429.00
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- G2RV-SR500-AP Slim I/O Relay - - -
RS Stock No. 508-0253
Mfr. Part No.2833738
HK$80.86
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Plug In Module PR1 Series, PR2 Series LV-120-230AC/110VDC 110V dc -
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Mfr. Part No.2885359
HK$194.07
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Power Module EMD-SL Series Monitoring Relay EMD-SL-PS-24DC - -
RS Stock No. 472-9143
Mfr. Part No.3RF2950-0HA16
BrandSiemens
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Power Controller 3RF29 - 24V dc 50A
RS Stock No. 410-8035
Mfr. Part No.2296058
HK$1,005.28
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- - PLC-V8/D15S/OUT 24V dc 3A
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Mfr. Part No.PTML0524 6-1415036-1
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LED Plug In Module RT78724, RT78726 - 6 → 24V ac/dc -
RS Stock No. 111-3086
Mfr. Part No.P2RVC-8-I-7-1
BrandOmron
HK$408.54
Each
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- G2RV-SR700-AP Slim I/O Relay - - -
RS Stock No. 472-9288
Mfr. Part No.3RF2920-0HA13
BrandSiemens
HK$2,127.95
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Power Controller 3RF29 - 230V ac 20A
RS Stock No. 512-881
Mfr. Part No.PTML0024 5-1415036-1
HK$19.70
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Module RT78724, RT78726 - 24V dc -
RS Stock No. 776-1535
Mfr. Part No.093.60
BrandFinder
HK$11.67
Each
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Separator 39 Series 93 Series - -
RS Stock No. 508-0556
Mfr. Part No.2833712
HK$80.86
Each
units
Plug In Module PR1 Series, PR2 Series LV- 12- 24UC 110V dc -
RS Stock No. 111-3083
Mfr. Part No.P2RVC-8-O-5-1
BrandOmron
HK$429.00
Each
units
- G2RV-SR500 Slim I/O Relay, G2RV-SR501 Slim I/O Relay, G3RV-SR500 Slim I/O Relay - - -
RS Stock No. 776-1686
Mfr. Part No.093.01
BrandFinder
HK$16.15
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Separator 93 Series 93 Series - -
RS Stock No. 111-3085
Mfr. Part No.P2RVC-8-O-7-1
BrandOmron
HK$408.54
Each
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- G2RV-SR700 Slim I/O Relay, G2RV-SR701 Slim I/O Relay, G3RV-SR700 Slim I/O Relay - - -
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