How much noise does the relay make when it closes? I'm looking for something basically silent. Thanks

That's hard to say. It's in a furnace room so it didn't matter to me. It is about the same sound as any small relay would make, a click, not a snap. Mine is mounted to a knock out in a 4 square electrical box which holds it off the back surface a little bit, ii thinks this helps keep it quit. I am using it with a thermostat on a hot domestic water circulating loop to cycle the pump, and the thermostat makes more noise.

Is this product the 2020 hardware revision that allows both delay-on-make and delay-on-break functions?

I am not aware of any delay attributes. Specifications for the dry contact for example has no inherent delay function indicated.

Does it include any debounce circuity? I am going to use it with a flow switch and was wondering if it is needed.

It does have a slight delay for open and closing. So I would say yes.

Can this be used to detect 120v input and complete a low voltage central vac circuit? Need to turn on the central vac when 120v is sensed at one inlet

No, I cannot sense the voltage. It just connects or disconnects when the dry contacts are triggered.

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Functional Devices RIB01BDC Dry Contact Relay, 20 Amp SPDT, Class 2 Dry Contact Input, 120 Vac Power Input, NEMA 1 Housing

Functional Devices RIB01BDC Dry Contact Relay, 20 Amp SPDT, Class 2 Dry Contact Input, 120 Vac Power Input, NEMA 1 Housing

Product ID: 74285858

Details

Connector Type
Dry Contact
Contact Material
Copper
Contact Type
Normally Open
Current Rating
20 A
Mounting Type
Screw Mount

⚡20 Amp high current capacity

🔄SPDT versatile switching

🔌120 VAC power input

S$94

Duties & taxes included

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Description

⚡ Elevate your control game with the relay that means business!

BUILT TO LAST - Durable NEMA 1 housing protects your investment indoors 🏠
MADE IN THE USA - Quality and reliability you can trust, proudly manufactured stateside 🇺🇸
VERSATILE SWITCHING - Single Pole Double Throw (SPDT) for flexible circuit design 🔄
SEAMLESS INTEGRATION - Class 2 dry contact input ensures clean, reliable control 🔌
POWERHOUSE PERFORMANCE - Handles up to 20 Amps for heavy-duty applications ⚡

The Functional Devices RIB01BDC is a robust, 20 Amp SPDT dry contact relay powered by 120 VAC, designed for reliable and flexible switching in industrial and scientific applications. Featuring a Class 2 dry contact input and housed in a durable NEMA 1 enclosure, this American-made relay ensures high performance and long-lasting durability for professional-grade electrical control.

Specifications

ASIN	B01LZRM6AF
Best Sellers Rank	#69,629 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #38 in Electromechanical Relays
Brand Name	RIB
Coil Voltage	120 volts
Connector Type	Dry Contact
Contact Current Rating	20 A
Contact Material	Copper
Contact Type	Normally Open
Current Rating	20 A
Customer Reviews	4.2 4.2 out of 5 stars (49)
Item Weight	0.27 g
Manufacturer	Functional Devices, Inc
Maximum Switching Current	20 A
Maximum Switching Voltage	120 volts
Minimum Switching Voltage	120 volts_of_alternating_current
Model	RIB01BDC
Mounting Type	Screw Mount
Number of Items	1
Operation Mode	Automatic
Part Number	RIB01BDC
Specification Met	CE, UL
UPC	696505452699
Unit Count	1 Count
Wattage	2400 watts

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