
The Huibao SR501/SR501-4 Switching Relay, also known as the Taco SR501/SR501-4 or simply the 501/501-4 relay, is a versatile and reliable electromechanical switching device designed for use in HVAC and other automation applications. This high-quality product, manufactured by Huibao, is engineered to provide efficient and accurate switching functions for various loads.
The SR501/SR501-4 relay comes in a compact size, measuring 3.5 inches long, 2 inches wide, and 1.2 inches high, making it suitable for installation in confined spaces. It features four normally open (NO) contacts, rated at 10A at 277VAC or 15A at 125VAC, allowing it to control up to four different loads independently. Each contact is rated for a contact voltage of 277VAC and a contact resistance of less than 5 ohms at 25 degrees Celsius.
The SR501/SR501-4 relay is designed with a robust and durable construction. It is built with a copper-alloy contact material that ensures excellent conductivity and long-lasting performance. The relay also boasts a robust die-cast aluminum housing that protects the internal components from environmental factors and provides a stable platform for the relay to operate.
This switching relay operates using a 24VAC or 12VDC coil, which is not included in the package. It has a maximum coil current rating of 1.8A and a coil voltage rating of 12-32VDC or 24-32VAC. The relay has a spark-gap coil design, which helps to minimize arcing and ensure a clean contact closure.
The SR501/SR501-4 relay is suitable for use in a wide range of applications, including HVAC systems, lighting controls, and water treatment systems. It is designed to meet the requirements of various industry standards, such as UL508A, UL1693, and CSA C22.2 No. 61558-1.
The Huibao SR501/SR501-4 Switching Relay is a high-performance and reliable switching solution for your automation needs. Its compact size, versatile contact configuration, and robust construction make it an ideal choice for various applications where precise and efficient load control is essential.
The Huibao SR501 and SR501-4 switching relays, also known as TACO SR501 and SR501-4, are commonly used in HVAC systems for controlling various functions such as fan coils, pumps, and valves. Here are some pros and cons of buying these relays:
Pros:1. Reliability: Huibao relays are known for their durability and reliability in harsh environments. They can handle high currents and voltages and have a long lifespan.
2. Versatility: These relays are available in different configurations, including normally open (NO), normally closed (NC), and changeover (CO), making them suitable for various applications.
3. Ease of Use: Huibao relays have a simple and intuitive wiring diagram, making it easy to install and connect them to other components in the system.
4. Cost-Effective: Compared to other brands, Huibao relays are relatively affordable, making them a cost-effective option for many HVAC applications.
Cons:1. Limited Features: Huibao relays do not offer advanced features such as programmability or communication capabilities, which may be required for more complex systems.
2. Manual Reset: In case of a fault, these relays require manual reset, which can be time-consuming and inconvenient.
3. Limited Inputs and Outputs: Depending on the specific model, Huibao relays may have a limited number of inputs and outputs, making them less suitable for larger systems.
Conclusion:The Huibao SR501 and SR501-4 switching relays offer reliable and cost-effective solutions for various HVAC applications. However, they may not be suitable for more complex systems that require advanced features or a large number of inputs and outputs.
Recommendation:If you have a simple HVAC system with a limited number of components, the Huibao SR501 or SR501-4 switching relays are an excellent choice due to their reliability, versatility, and cost-effectiveness. However, if you require advanced features or a larger number of inputs and outputs, you may want to consider other options from more advanced relay manufacturers.
Details:
The SR501-4 switching relay replacement is a compatible product with taco SR501/sr501-4/501/501-4 central furnace switches. The switch control ensures efficient power distribution for your heating or cooling system, making it a reliable replacement existing relay. Made by the brand Huibao in china, this corded electric relay operates at 120v and is designed for central heating cooling systems.
specifications centrafurn:
- brand: Huibao
- mpn: Sr501
- control style: Switch
- type: Central Furnace
- power source: Corded Electric
- voltage: 120 V
- country of origin: China
offer centrafurn:
- started: december 10, 2025
- quantity: 2
- options: ship-to-home
- availability: in stock
- best offers: true
- sold #: 9
returns centrafurn:
- policy: returns accepted
- method: money back
- time: 30 days
- paid by: buyer
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- type: calculated
- service: usps ground advantage
- carrier: usps
- class: standard
- transit: 3-9 days
seller centrafurn:
- city: fenton, missouri
- # reviews: 714
- rating: 99.5%
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general centrafurn:
- category: Home & Garden > Heating, Air > Cooling Systems > Central Furnaces