
SR501-1 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $46.95 | Condition is New – Open box, Taco SR 501, 1 Zone Switching Relay, FREE SHIPPING | 99.4% |
![]() | $39.76 | Top Pick! Condition is New – Open box, Taco SR 501, 1 Zone Switching Relay, shipping cost = $16.45 | 99.5% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $47.99 | Condition is New, Brand New (NIB) - Taco SR501-1 Single Zone switching Relay, shipping cost = $9.69 | 100.0% |
![]() | $50.15 | Top Pick! Condition is New, Taco SR501 1 ZONE Switching Relay (1), shipping cost = $11.95 | 99.7% |
![]() | $79.99 | Condition is New, Taco SR501 1 Zone Switching Relay, shipping cost = $9.99 | 99.6% |
![]() | $85.00 | Condition is New, Taco SR501 1 Zone switching Relay. NEW!!, shipping cost = $14.46 | 100.0% |
![]() | $150.00 | Condition is New, Taco SR501-1 Switching Relay 1 Zone 24VAC New in Box, FREE SHIPPING | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $49.99 | Condition is Used, Tested! Taco SR501 1 Zone Switching Relay 120V 24V 9300-822 Board, shipping cost = $9.42 | 100.0% |
![]() | $65.00 | Condition is Used, Taco SR501-1 Zone Switching Relay 1 Zone Circulator Pump Control Tested, shipping cost = $9.69 | 100.0% |
![]() | $50.00 | Condition is Used, Taco SR501 1 Zone Switching Relay, shipping cost = $25.00 | 100.0% |
![]() | $59.99 | Condition is Used, Taco SR501-1 Zone Switching Relay. Slightly Used, shipping cost = $19.45 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $48.99 | Condition is Open box, TACO SR501 1 ZONE SWITCHING RELAY FOR CIRCULATOR PUMP NEW WITHOUT BOX, shipping cost = $8.13 | 100.0% |

The TACO SR501-1 Switching Relay Zone is a versatile and reliable electrical component designed for HVAC and building automation systems. This device is specifically engineered to provide zone control for heating, cooling, or ventilation applications.
The SR501-1 is a single-pole, double-throw (SPDT) relay with a switching capacity of 5 amps at 120 volts AC or 1 amp at 24 volts DC. It's constructed with high-quality materials, ensuring durability and long-lasting performance. The relay is housed in a compact, weather-resistant enclosure, making it suitable for various indoor and outdoor installations.
The TACO SR501-1 features a clear, easily accessible status indicator. This LED light glows green when the normally open (NO) contacts are closed and red when the normally closed (NC) contacts are closed. This visual cue makes it simple for users to determine the relay's current state.
The SR501-1 Switching Relay Zone is designed for easy integration with building automation systems and control panels. It includes screw terminals for secure and reliable wiring connections. The terminal screws are numbered for easy identification, ensuring proper wiring each time.
The TACO SR501-1 is a low-power, energy-efficient solution for zone control applications. It consumes minimal power when inactive, reducing energy waste and lowering overall operating costs. Additionally, the relay's high contact rating ensures reliable switching even under heavy usage.
The SR501-1 Switching Relay Zone is a valuable addition to any HVAC or building automation system, offering precise zone control and dependable performance. Its compact size, clear status indication, and easy wiring connections make it a convenient and effective solution for various applications.
The Taco SR501-1 is a single-pole, double-throw (SPDT) switching relay designed for use in HVAC and plumbing applications. Here are some potential pros and cons of buying this relay:
Pros:1. Versatile: The Taco SR501-1 can be used to control a wide range of loads, including pumps, fans, and valves, making it a versatile option for various HVAC and plumbing systems.
2. Compact: This relay has a compact size, measuring only 2.25 inches by 3.37 inches, making it easy to install in tight spaces.
3. Durable: The relay is designed to withstand harsh environments, including high temperatures and humidity, ensuring reliable operation over an extended period.
4. Easy to install: The relay comes with a clear and concise instruction manual, and the terminals are labeled for easy identification, simplifying the installation process.
Cons:1. Limited load capacity: The Taco SR501-1 can only handle a maximum load of 10 amps and 120 volts, which may not be sufficient for larger loads.
2. Manual reset: If the relay fails due to an overload or short circuit, it requires manual reset to restart operation, which can be time-consuming and inconvenient.
3. Lack of advanced features: The Taco SR501-1 is a basic switching relay and does not offer advanced features such as fault detection, diagnostics, or communication capabilities.
In conclusion, the Taco SR501-1 switching relay is a reliable and compact option for controlling smaller loads in HVAC and plumbing applications. Its versatility and durability make it a popular choice for many professionals in the industry. However, its limited load capacity and lack of advanced features may make it less suitable for more complex systems. Ultimately, the decision to buy the Taco SR501-1 depends on the specific requirements of the application and the user's preferences. If the load capacity and advanced features are not essential, then the Taco SR501-1 is an excellent choice. If more advanced features or higher load capacity are required, then other options may be more suitable.
Details:
Taco SR501-1 switching relay 1 zone 24vac. Shipped with USPS ground advantage.
specifications maxohvac:
- brand: Taco
- mpn: Sr501-1
returns maxohvac:
- policy: no returns
payments maxohvac:
- other
- credit card: discover
- wallet: google-pay
seller maxohvac:
- rating: 100.0%
- city: philadelphia, pennsylvania
- # reviews: 125
shipping maxohvac:
- service: usps ground advantage
- carrier: usps
- transit: 3-8 days
- class: standard
- type: calculated
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
offer maxohvac:
- started: july 14, 2025
- options: ship-to-home
- sold #: 16
- availability: in stock
- prices: $39.76–$150.00
- item condition:
- New – Open box
- New
- Used
- Open box
- in stock #: 5
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