M35A-120A STRUTHERS-DUNN Mercury Relay Vac

Review STRUTHERS-DUNN Mercury Relay 120 Vac Untested

The Struthers-Dunn M35A-120A Mercury Relay is a heavy-duty, 120V AC Mercury Contact Relay, designed for industrial applications requiring reliable and precise switch control. This versatile relay offers 5 Form C contacts, which can be used for both normally open (NO) and normally closed (NC) circuits.

The M35A-120A Mercury Relay is built with a Mercury Contact Mechanism, which ensures reliable contact operation even in harsh environments. The mercury switch, surrounded by an inert gas, creates a vacuum that seals the switch and prevents it from sticking or bouncing, resulting in a clean and precise contact closure.

The relay features a compact size, measuring 3.4 x 2.4 x 1.3 inches, and a lightweight construction, making it easy to install and integrate into various systems. It is designed to handle a maximum operating current of 10A per contact, with a maximum voltage of 120V AC.

The M35A-120A Mercury Relay is also equipped with a built-in coil, which can be driven by a separate control circuit or a solid-state contactor. The coil has a rated current of 0.5A at 120V AC, and a power consumption of 6 Watts. The relay also includes a built-in coil fuse, which protects against short circuits and overloads.

The relay housing is made of robust, die-cast aluminum, which provides excellent heat dissipation and protects the internal components from damage. It is also RoHS compliant, ensuring the use of environmentally friendly materials.

The Struthers-Dunn M35A-120A Mercury Relay offers a high degree of flexibility and customization, with a wide range of options available, including various contact configurations, different coil voltages, and custom coil winding. It is suitable for use in various industries, including HVAC, water and wastewater treatment, power generation, and automation systems.

Overall, the Struthers-Dunn M35A-120A Mercury Relay is a high-quality, robust, and reliable switch control solution, engineered to meet the demanding requirements of industrial applications. Its precision switch contacts, compact size, and efficient design make it an ideal choice for applications requiring precise and reliable switch control in harsh environments.

The Struthers-Dunn M35A-120A Mercury Relay is a 120V AC mercury contact relay designed for heavy-duty applications. Here are some pros and cons of buying this relay to help you make an informed decision:

1. High Load Capacity: This relay can handle a maximum load of 120V AC and 20A, making it suitable for heavy-duty applications.

2. Reliable: Mercury relays are known for their reliability, and the M35A-120A is no exception. It can handle numerous switching cycles without wearing out.

3. Versatile: This relay can be used in various industrial, commercial, and residential applications.

4. Easy to Install: The relay has a standard size footprint, making it easy to install in most applications.

5. Durable: The relay is built with high-quality materials, making it durable and resistant to wear and tear.

1. Mercury Contacts: Mercury relays use mercury switches, which can be hazardous if not handled properly. They also require special disposal methods due to their toxic nature.

2. Energy Consumption: Mercury relays consume more energy than other types of relays due to the mercury contacts.

3. Cost: Mercury relays are more expensive than other types of relays due to the use of mercury switches and their heavy-duty construction.

The Struthers-Dunn M35A-120A Mercury Relay is a reliable and heavy-duty solution for industrial, commercial, and residential applications that require a high load capacity. However, it comes with some disadvantages, such as the use of mercury contacts, higher energy consumption, and a higher cost compared to other types of relays. If you require a heavy-duty relay for your application and are willing to pay a premium for reliability and durability, then the M35A-120A Mercury Relay is a good choice. If you are looking for a more cost-effective solution or prefer a relay without mercury contacts, then you may want to consider other types of relays.

If you require a heavy-duty relay with a high load capacity for your industrial, commercial, or residential application, and are willing to pay a premium for reliability and durability, then the Struthers-Dunn M35A-120A Mercury Relay is a good choice. However, if you are looking for a more cost-effective solution or prefer a relay without mercury contacts, then you may want to consider other types of relays, such as solid-state relays or contactless relays.

Details:

If anything is not in the photos, it included. For this reason, is being sold. Power supply not included. Please see all photos.

Struthers-dunn M35A-120A mercury relay 120 vac. Feel free to send an offer. Some consider the equipment to be obsolete while others find it essential according their needs.

specifications genpurrelays:

• brand: Struthers-dunn
• mpn: M35a-120a

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• sold #: 9
• price: $25.00
• item condition: Used
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• in stock #: 1
• started: april 11, 2026

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

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