HUIBAO SR504-4 Zone Switching Relay Selling

( Brand: Huibao ), ( Manufacturer Part Number: SR504-4 ), ( Type: Boiler Control Switching Relay ), ( Country Of Origin: China )

Review HUIBAO Sr504 Zone Switching Relay Not Working Selling Parts

Detailed Product Description for Huibao SR504-4 Zone Switching Relay

The Huibao SR504-4 Zone Switching Relay is a versatile and high-performing electrical component designed for a wide range of applications. This relay is built with premium quality materials, ensuring durability and reliability in even the most demanding environments.

The SR504-4 is a four-zone, single-pole, double-throw (SPDT) relay, offering four independent switching circuits that can be controlled by a single coil. Each zone is designed to handle a maximum current of 10A at 250V AC, making it suitable for various low-voltage systems.

The relay features robust contacts that ensure a secure and efficient connection. The gold-plated contacts provide excellent conductivity, ensuring a long lifespan and minimizing contact resistance. The contacts are rated for a contact operation of 10,000 cycles, ensuring consistent performance over time.

The SR504-4 is equipped with a coil that can handle a maximum voltage of 250V AC and a current of 0.2A. The coil's quick response time ensures fast and accurate switching, reducing the potential for electrical arcing.

The relay is compact in size, measuring just 83mm x 83mm x 40mm, making it easy to install in a variety of spaces. It also comes with a protective cover to prevent dust and debris from entering the relay mechanism, further enhancing its longevity.

In terms of safety, the Huibao SR504-4 Zone Switching Relay is designed with a built-in over-current protection mechanism. This feature prevents the relay from being damaged in case of a current surge, ensuring the continuous operation of the system.

Overall, the Huibao SR504-4 Zone Switching Relay is an excellent choice for those seeking a reliable and robust relay for their low-voltage systems. Its versatility, durability, and high-performance make it an ideal component for various industrial, commercial, and residential applications.

**Product Under Review: Huibao SR504-4 SR504 Zone Switching Relay**

1. **Versatility:** The Huibao SR504-4 is a zone switching relay, which means it can be used in various applications where multiple loads need to be controlled by a single input signal. This versatility makes it a great choice for a wide range of projects.

2. **Reliability:** Huibao is a well-known brand in the electronics industry, known for producing high-quality products. The SR504-4 is no exception, offering a reliable performance in most conditions.

3. **Ease of Use:** This relay is designed to be easy to install and operate, making it a good choice for both beginners and experienced users.

4. **Cost-Effective:** Compared to other zone switching relays in its class, the Huibao SR504-4 offers a competitive price, making it a cost-effective solution for many projects.

1. **Limited Rating:** The SR504-4 has a maximum current rating of 4A. While this is suitable for many applications, it may not be enough for high-current systems.

2. **Voltage Limitations:** This relay is designed to work with AC voltages of up to 250V. If you need a relay for higher or lower voltages, you may need to look elsewhere.

3. **No Built-In Protection:** The SR504-4 does not have any built-in protection features, such as over-current or over-temperature protection. While this is common for relays in this price range, it's something to consider if you're working in an environment where such protection is necessary.

The Huibao SR504-4 SR504 Zone Switching Relay is a versatile and reliable product that offers a good value for money. However, its limited current and voltage ratings, as well as the lack of built-in protection, may make it less suitable for some applications. Before making a purchase, ensure that the relay's specifications meet your project's requirements.

If you're looking for a zone switching relay for a project that requires a maximum current of up to 4A and AC voltages of up to 250V, and you don't need built-in protection features, the Huibao SR504-4 SR504 Zone Switching Relay could be a great choice for you. However, if you need a relay with higher current or voltage ratings, or with built-in protection features, you may want to consider other options on the market.

Details:

Ships within. I don't have a way of testing it and looks in pretty rough shape, so selling As-Is NOT WORKING.

part #: sr5044 price

• $85.00

specifications hvaapa:

• brand: Huibao
• mpn: Sr504-4
• type: Boiler Control Switching Relay
• country of origin: China

seller hvaapa:

• # reviews: 356
• rating: 97.8%
• city: Cary, North Carolina

shipping hvaapa:

• carrier: USPS
• transit: 5-8 Days
• type: Calculated
• class: Standard
• cost: $0.00
• service: USPS Ground Advantage

offer hvaapa:

• options: Ship-to-home
• availability: In Stock
• started: November 14, 2025
• sold: 0
• quantity: 1

general hvaapa:

• condition: For parts or not working
• HVAC Refrigeration > HVAC Refrigeration: Parts Accessories > HVAC Refrigeration: Controls Circuit Boards

returns hvaapa:

• policy: No Returns

payments hvaapa:

• credit card: Discover
• wallet: Google-pay
• other

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