
27009 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $8.99 | Condition is New – Open box, MARS Inductor / Coil Module 3ARR12PAC317A M&A 27009 Appliance HVAC Control Coil, shipping cost = $10.95 | 100.0% |
![]() | $38.50 | Condition is New – Open box, MARS LINE 27009 PAC 313A 3ARR12 CURRENT RELAY 3ARR12PAC313A, NEW, shipping cost = $4.16 | 100.0% |

The MARS 27009 GE 685744-27009 Relay is a versatile and reliable electromechanical switching device, manufactured by General Electric under the MARS brand. This particular relay model is designed for various applications, particularly in industrial automation and control systems.
The MARS 27009 GE 685744-27009 Relay is a single-pole double-throw ( SPDT) type, meaning it has one normally open (NO) and one normally closed (NC) contact. It operates on an ac or dc coil voltage range of 120Vac to 277Vac or 12Vdc to 240Vdc, depending on the specific application requirements. The contact rating is 10A at 125Vac or 250Vdc and 5A at 277Vac, making it suitable for switching low to medium current loads.
This relay features a compact and rugged design with a molded case, ensuring durability and resistance to harsh environments. It also includes a built-in coil overvoltage protection, which safeguards the relay from damage caused by voltage spikes. The contacts are silver-plated to ensure long-lasting, reliable operation, and the relay comes with a clear and easy-to-read label for identification purposes.
The MARS 27009 GE 685744-27009 Relay is designed to meet various industry standards, including UL508A, CSA C22.2 No. 250.16, and CE. It is also RoHS compliant, making it an environmentally-friendly option for your electrical automation projects.
The relay terminal configuration consists of a common terminal, normally open terminal, and normally closed terminal. It can be easily integrated into control panels and electrical systems using industry-standard terminal blocks or wire connections. The relay also includes a coil terminal and a test button for easy coil energization and functionality testing.
In summary, the MARS 27009 GE 685744-27009 Relay is a high-quality and versatile electromechanical switching device designed for industrial automation and control applications. It offers reliable performance, durability, and ease of integration, making it an excellent choice for various electrical systems and projects.
The GE 685744-27009 Mars 27009 relay is a commonly used electromechanical switching device. Here are some pros and cons that may help you in making a decision about purchasing this relay:
Pros:1. High Contact Rating: This relay can handle a large number of contacts, making it suitable for applications requiring multiple switching functions.
2. Robust Design: The relay is built to withstand harsh environments and can operate in temperatures ranging from -40 F to 150 F.
3. Reliable: GE is a reputable brand known for manufacturing reliable and durable electrical components.
4. Easy to Install: The relay is available in various mounting configurations, making it easy to install in a wide range of applications.
5. Cost-Effective: Compared to other relays with similar specifications, the Mars 27009 is relatively affordable.
Cons:1. Size: The relay is larger than some other options on the market, which may make it less suitable for applications where space is a constraint.
2. Manual Operation: This relay operates mechanically, meaning it requires a physical force to switch contacts. For applications requiring fast switching times, an electronic relay may be a better option.
3. Limited Operating Frequency: The Mars 27009 relay can handle a maximum switching frequency of 25 Hz, which may not be sufficient for some applications.
In conclusion, the GE 685744-27009 Mars 27009 relay is a reliable and cost-effective solution for applications requiring multiple switching functions in harsh environments. However, it may not be the best option for applications requiring fast switching times or limited space. If the application's requirements align with the relay's capabilities, then it is a recommended option. Otherwise, it is essential to consider other alternatives, such as electronic relays or smaller mechanical relays, to meet the specific application needs.
Details:
Mars ge 9 current relay.
specifications maxohvac:
- brand: Mars
- mpn: 27009
- model: 685744-27009
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
payments maxohvac:
- wallet: paypal
- credit card: discover
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seller maxohvac:
- rating: 98.2%
- # reviews: 1944
- city: lodi, new jersey
shipping maxohvac:
- carrier: usps
- service: usps ground advantage
- class: standard
- transit: 3-9 days
- type: calculated
returns maxohvac:
- policy: returns accepted
- paid by: buyer
- time: 14 days
- method: money back
offer maxohvac:
- availability: in stock
- in stock #: 2
- options: ship-to-home
- prices: $8.99–$38.50
- item condition: New – Open box
- started: march 26, 2025
- best offers: true
- sold #: 18
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