Please verify: contacts are 20amp, 120v and 'coil' voltage can be anything from 24vac/dc to 120vac?

Yes to both questions. Enclosed Power Relay 20Amp SPDT. Coil voltage input is 24VAC/DC ; 120VAC ; 50-60 Hz

Can a 24 volt thermostat connection be used with this to turn on a 120 volt circulator pump?

I am using the unit to power a duct booster fan, (120 V-1/4hp)from my 24v out put terminal on my HVAC circuitboard powering the relay, so you should be OK.

What are the detentions of this relay?

did you mean the dimensions if so its 60mmx82mmx47mm tall

I have two food warmers 120v @ 12amp that can not be on at the same time. Can I use this to allow only one warmer at a time?

The connection is a single switch (SPDT, means Single pole double throw, and that means on or off) If you connect one warmer it will turn on only that one. If you connect both to the relay it will overload it...it's a 20 amp device and 12 + 12 is 24, overload. If you want to get creative you can connect a manual switch that connects to one warmer or the other then connect this relay to that device. Then, depending on which way the manual switch is, that warmer will be controlled, move the manual switch the other way and it will operate the other warmer.

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Functional Devices RIB2401B Power Relay, 20 Amp SPDT, 24 Vac/dc/120 Vac Coil, NEMA 1 Housing

Product ID: 44372060

Details

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

⚡20A high current capacity

🏠NEMA 1 enclosed housing

🔄SPDT versatile switching

HK$571

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Upgrade your control game with power and precision!

POWER UP TO 20 AMPS ⚡ - Handles heavy-duty electrical loads with ease, perfect for industrial and smart home upgrades.
MADE IN THE USA 🇺🇸 - Crafted domestically for trusted quality and durability you can count on.
SECURE SCREW MOUNTING 🏠 - Robust NEMA 1 housing with screw terminals ensures reliable, safe, and tidy setup.
DUAL COIL COMPATIBILITY 🔄 - Operates seamlessly on 24 VAC/DC or 120 VAC coils for flexible installation options.
SILVER CONTACT RELIABILITY ✨ - Premium silver contacts guarantee long-lasting performance and minimal signal loss.

The Functional Devices RIB2401B is a high-quality, 20 amp SPDT power relay featuring versatile 24 VAC/DC or 120 VAC coil compatibility. Housed in a durable NEMA 1 enclosure with secure screw terminals and silver contacts, it delivers reliable switching for industrial or smart home applications. Made in the USA, this relay is designed for professionals seeking dependable, heavy-duty electrical control solutions.

Specifications

ASIN	B000LEUJU6
Best Sellers Rank	#32,505 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 in Electromechanical Relays
Brand	RIB
Brand Name	RIB
Coil Resistance	2.78 ohm
Coil Voltage	120 volts
Connector Type	Screw
Contact Current Rating	20 A
Contact Material	Silver
Contact Type	Normally Open
Current Rating	20 A
Customer Reviews	4.7 out of 5 stars 471 Reviews
Included Components	Accessories
Item Weight	7.84 ounces
Manufacturer	Functional Devices, Inc
Maximum Switching Current	20 A
Minimum Switching Voltage	120 volts_of_alternating_current
Model	RIB2401B
Mounting Type	Screw Mount
Number of Items	1
Number of Packs	1
Number of Terminals	3
Operation Mode	Manual
Part Number	RIB2401B
UPC	643129353819
Unit Count	1 Count
Upper Temperature Rating	60 °C
Warranty Description	No Warranty
Wattage	900 watts

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