QR24 MARLEY Power Relay Fnob

Review MARLEY Power Relay Fnob

The Marley QR24 Power Relay FNOB (Functionally Normally Open) is a versatile and reliable electrical switching device designed for use in various HVACR (Heating, Ventilation, Air Conditioning, and Refrigeration) applications. This power relay comes with a quick-connect terminal block, making it easy to install and integrate into different systems.

The QR24 is a 24V AC/DC coil operated relay with a contact rating of 10A at 250V AC or 30V DC. Its Functionally Normally Open (FNOB) design means that the contacts are open when the coil is de-energized and close when the coil is energized. This feature makes it an ideal choice for applications where the contact closure is required upon receiving a signal.

The relay's contacts are gold-plated for improved conductivity and longer lifespan. The contacts are also rated for 1 million cycles, ensuring stable and reliable switching performance. The QR24 also features an LED indicator, which illuminates when the coil is energized, making it easy to verify the status of the relay.

This power relay is constructed with a robust and durable design, with a die-cast aluminum housing that provides excellent heat dissipation and protection against environmental factors. The termination points are also rated for a high number of insertions and removals, ensuring the relay can withstand the rigors of demanding HVACR applications.

The Marley QR24 Power Relay FNOB offers a compact size, measuring 72mm (L) x 35mm (W) x 38mm (H), making it suitable for space-constrained installations. Its wide operating temperature range of -25 C to 70 C (-13 F to 158 F) makes it adaptable to various environmental conditions.

In summary, the Marley QR24 Power Relay FNOB is a high-performing and versatile switching device designed for use in HVACR applications. With its quick-connect terminal block, FNOB design, gold-plated contacts, LED indicator, robust construction, and compact size, it provides reliable and stable switching performance while offering easy installation and integration into various systems.

The Marley QR24 Power Relay FNOB is a type of contactor used in refrigeration systems for controlling compressors or other electrical loads. Here are some potential pros and cons of buying this relay:

1. Reliable: Marley is a well-known brand in the refrigeration industry, and their QR24 relay is designed for heavy-duty applications.

2. Versatile: This relay can be used with various types of compressors and refrigeration systems, making it a popular choice for many applications.

3. Easy to install: The QR24 relay comes pre-wired, reducing the installation time and effort required.

4. Durable: The relay is built to withstand harsh operating conditions, including high temperatures and humidity.

5. Safety features: The relay has built-in overload protection, which helps prevent damage to the compressor or other components in case of overcurrent.

1. Cost: The Marley QR24 relay is more expensive than some other options on the market.

2. Size: This relay is larger than some other models, which may require more space for installation.

3. Limited compatibility: While the QR24 relay is versatile, it may not be compatible with all types of compressors or refrigeration systems.

The Marley QR24 Power Relay FNOB is a reliable and durable option for controlling compressors or other electrical loads in refrigeration systems. Its versatility, easy installation, and safety features make it a popular choice for many applications. However, its higher cost and larger size may be a disadvantage for some users. Ultimately, the decision to buy this relay depends on the specific requirements of your refrigeration system and your budget.

If you are looking for a reliable and versatile power relay for your refrigeration system, the Marley QR24 Power Relay FNOB is a good option to consider. Its safety features and easy installation make it a worthwhile investment, even if it comes at a higher cost than some other options. However, if cost is a major concern, you may want to explore other, less expensive alternatives.

Details:

The product must be the original item shipped, with matching serial numbers if applicable. The item has its original packaging but it is not sealed. Manufacturer part number: QR24. Marley QR24 power relay power relay component for heating systems.

Marley QR24 power relay manufactured by Marley. A new, unused item with no signs of wear. 2-year MRI shield protection plan included. Special instructions.

Most items are in stock when they listed.

specifications genpurrelays:

• brand: Marley
• mpn: Qr24

offer genpurrelays:

• options: ship-to-home
• sold #: 9
• availability: in stock
• in stock #: 1
• price: $24.00
• item condition: New – Open box
• best offers: true
• started: november 27, 2025

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

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