1. General Purpose Relays Items
  2. sku: 7543420093146504
  3. FUNCTIONAL DEVICES RIB RIB2421SB

RIB2421SB FUNCTIONAL DEVICES-RIB Enclosed Wired Relay Spst

RIB2421SB FUNCTIONAL DEVICES-RIB Enclosed Wired Relay Spst
Product Information
BrandFUNCTIONAL DEVICES-RIB
Manufacturer Part NumberRIB2421SB
Custom BundleNO
Item Length7.000
Depth4.500
Item Height2.500
FeaturesENCLOSED PRE-WIRED RELAY, COIL VOLTAGE 24V AC/DC/208-277V AC/120V AC, CONTACT FORM SPST-NO, CURRENT RATING 20 A, MOUNTING STYLE SURFACE, NIPPLE SIZE 0.50 IN NPT
Contact RatingAC 10 A 120/277V, 20 A 277V, INPUT VOLTAGE 120/208 TO 277V AC/DC, 24V AC, NEMA ENCLOSURE RATING 1, BODY DEPTH 1.8 IN, BODY HEIGHT 3.2 IN, BODY WIDTH 2.3 IN, CONTACT MATERIAL SILVER ALLOY, FOR USE WITH EXHAUST FANS, MOTORS, VACUUMS, FREQUENCY 50/60 HZ, HORSEPOWER 120V AC 1 HP, LEAD LENGTH 16 IN
Maximum Amperage20 A
Weight0.5400
TypeINDUSTRIAL CONTROL AUTOMATION ELECTRICAL RELAYS PRE-WIRED E
Country/region Of ManufactureUS

Review FUNCTIONAL DEVICES-RIB Enclosed Pre-wired Relay 20a 277vac Spst

The Rib Rib2421SB Enclosed Pre-Wired Relay is a functional device designed for controlling electrical circuits with a 20A current capacity and a voltage rating of 277VAC. This Single Pole Single Throw (SPST) relay is enclosed in a protective housing, making it ideal for use in various industrial, commercial, or residential applications where environmental protection is necessary.

The pre-wired design of this relay simplifies the installation process. It comes with three wires already connected to the coil, normally open (NO) contact, and normally closed (NC) contact terminals. These wires can be easily connected to the control circuit and load terminals, respectively. The coil can be energized with a low voltage AC control signal, which then completes the circuit through the contacts to switch on the load.

The Rib2421SB relay features a robust construction with a silver-plated contact material, ensuring reliable contact performance and long-lasting operation. Its compact size makes it suitable for space-constrained installations. The housing is made of a durable material, providing protection against dust, moisture, and other harsh environmental conditions.

This relay can handle a wide range of electrical loads, such as motors, solenoids, and heating elements. The 277VAC voltage rating makes it suitable for use in applications with high voltage requirements, while the 20A current capacity ensures it can handle heavy loads.

The Rib Rib2421SB Enclosed Pre-Wired Relay is an essential component for automating various processes and systems. Its easy-to-install design, reliable performance, and robust construction make it a popular choice for various applications in industries like heating, ventilation, and air conditioning (HVAC), manufacturing, and automation.

Pros and Cons of Buying RIB RIB2421SB Enclosed Pre-Wired Relay (20A, 277VAC, SPST)

1. **Reliability:** RIB relay is a well-known brand in the industrial automation industry. The RIB2421SB relay is an enclosed pre-wired device, which means it is designed to operate in harsh environments and offers protection against dust and moisture. It is also pre-wired, reducing the risk of wiring errors.

2. **Ease of Installation:** The pre-wired design saves time and effort during installation since the wiring is already done. This can be a significant advantage for small projects or for installations in hard-to-reach locations.

3. **Safety:** The enclosed design provides protection against electrical hazards, making it a safer option compared to open relays. It also reduces the risk of accidental contact with live electrical components.

4. **Versatility:** The RIB2421SB relay is rated for 20A and 277VAC, making it suitable for a wide range of applications. It is also a single-pole, single-throw (SPST) relay, which means it can be used to switch one electrical circuit.

5. **Limited Customizability:** Since it is a pre-wired relay, the wiring configuration is fixed. This may limit its customizability for more complex applications.

6. **Cost:** The pre-wired design and the brand name may result in a higher cost compared to building a relay from scratch or purchasing a non-pre-wired relay.

7. **Limitations:** The RIB2421SB relay is suitable for applications where the circuit requirements match its specifications. If the circuit requirements vary significantly, it may not be the most cost-effective solution.

**Conclusion:**

The RIB RIB2421SB Enclosed Pre-Wired Relay (20A, 277VAC, SPST) offers several advantages, including reliability, ease of installation, safety, versatility, and protection against harsh environments. However, the limited customizability and higher cost are potential drawbacks.

**Recommendation:**

If the application requirements match the relay's specifications, and a reliable, easy-to-install, and safe solution is needed, the RIB RIB2421SB Enclosed Pre-Wired Relay (20A, 277VAC, SPST) is an excellent choice. However, for more complex applications or those with custom wiring requirements, a non-pre-wired relay may be a more cost-effective solution.

Details:

With a maximum amperage of 20 a, this relay is durable and reliable. This relay is a spst-no type with contact rating of 10 a 120/277v ac and coil voltage 24v ac/dc/208-277v ac/120v. It is a Functional device that sure to meet your industrial needs. It has a lead length of 16 in and nipple size 0.50 npt.

This relay is perfect for use with exhaust fans, vacuums, and motors. It has a nema enclosure rating of 1 and horsepower hp 120v ac.

specifications genpurrelays:

  • brand: Functional Devices-rib
  • mpn: Rib2421sb
  • custom bundle: No
  • item length: 7.000
  • depth: 4.500
  • item height: 2.500
  • features: Enclosed Pre-wired Relay, Coil Voltage 24v Ac/dc/208-277v Ac/120v Ac, Contact Form Spst-no, Current Rating 20 A, Mounting Style Surface, Nipple Size 0.50 In Npt
  • contact rating: Ac 10 A 120/277v, 20 A 277v, Input Voltage 120/208 To 277v Ac/dc, 24v Ac, Nema Enclosure Rating 1, Body Depth 1.8 In, Body Height 3.2 In, Body Width 2.3 In, Contact Material Silver Alloy, For Use With Exhaust Fans, Motors, Vacuums, Frequency 50/60 Hz, Horsepower 120v Ac 1 Hp, Lead Length 16 In
  • maximum amperage: 20 A
  • weight: 0.5400
  • type: Industrial Control Automation Electrical Relays Pre-wired E
  • country/region of manufacture: Us

offer genpurrelays:

  • availability: in stock
  • started: march 11, 2025
  • options: ship-to-home
  • prices: $72.00–$104.37
  • item condition:
    • New – Open box
    • New
  • in stock #: 5
  • sold #: 23

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  • transit: 6-11 days
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  • carrier: usps
  • class: standard

general genpurrelays:

  • category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays

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  • # reviews: 65
  • rating: 98.5%

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rating: 98.5% out of 100 based on 65 user ratings.
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