HG3A1018 CLARE Mercury Wetted Contact Relay

Review CLARE C.p. And Co. Mercury Wetted Contact Relay

The Clare HG3A1018 C.P Mercury Wetted Contact Relay is a versatile and reliable electrical component designed for various applications where contact closure is essential. This mercury switch relay is manufactured by Clare, a trusted name in the industry known for its high-quality electrical components.

The HG3A1018 model is a single-pole, double-throw (SPDT) relay, which means it can switch one contact from one position to another. It operates on a 120V AC or 240V AC voltage range, making it suitable for use in residential, commercial, and industrial electrical systems. The contact rating for this relay is 10 amps at 250 volts maximum, ensuring it can handle moderate current loads.

The mercury wetted contact design is a key feature of this relay. Mercury contacts are known for their excellent conductivity and ability to maintain a reliable connection even in harsh environments. However, they do contain mercury, which is a hazardous material, so proper handling and disposal are essential. The contacts are spring-loaded and self-cleaning, ensuring they maintain good contact over time.

The Clare HG3A1018 C.P Mercury Wetted Contact Relay comes with a clear, tamper-evident seal on the contact enclosure to maintain the cleanliness and integrity of the mercury contacts. The relay housing is made of durable cast aluminum and is sealed against dust and moisture, providing protection against the elements. The terminal screws are nickel-plated brass for corrosion resistance and easy identification of terminal connections.

The relay has a coil resistance of 230 ohms and a coil voltage requirement of 12-24V DC. It also comes with an indicator lamp, which illuminates when the relay is energized, providing visual confirmation of the contact closure. The relay has a maximum switching frequency of 25 times per second, which is suitable for most applications.

The Clare HG3A1018 C.P Mercury Wetted Contact Relay is a robust and reliable electrical component that can handle moderate current loads and is suitable for various applications where contact closure is essential. Its mercury contacts provide excellent conductivity and reliability, while the durable housing and corrosion-resistant terminals ensure long-lasting performance. Proper handling and disposal of the mercury contacts are essential due to the hazardous nature of the material.

The Clare HG3A1018 C.P Mercury Wetted Contact Relay is a type of electrical switching device used in various applications, particularly in industrial automation and control systems. Like all electrical components, this relay has its advantages and disadvantages.

1. Durability: Mercury-wetted relays, like the Clare HG3A1018, are known for their robustness and long service life. The use of mercury contacts ensures reliable operation even in harsh environments.

2. High Contact Rating: Mercury relays can handle high contact ratings, making them suitable for applications that require heavy current or voltage switching.

3. Fast Response Time: Mercury relays have a faster response time compared to other types of relays, which is essential in control applications where quick switching is necessary.

1. Environmental Concerns: Mercury is a toxic substance, and its use in relays raises environmental concerns. Mercury can pose a health hazard during manufacturing, installation, and disposal.

2. Cost: Mercury relays are more expensive than other types of relays due to the cost of mercury and the complex manufacturing process.

3. Maintenance: Mercury relays require more maintenance than other types of relays due to the need to periodically check and replace the mercury contacts.

The Clare HG3A1018 C.P Mercury Wetted Contact Relay is a reliable and durable switching component suitable for heavy-duty applications. Its fast response time makes it an attractive option for control applications where quick switching is essential. However, its use of mercury raises environmental concerns and increases cost and maintenance requirements.

If the application can tolerate the environmental concerns and additional maintenance requirements, the Clare HG3A1018 C.P Mercury Wetted Contact Relay is a suitable option due to its reliability and high contact rating. However, for less demanding applications or those with environmental concerns, other types of relays, such as solid-state relays, may be more appropriate.

Details:

Please see all the pictures for its details and condition. The items are pre-owned and have some signs of use/age.

specifications genpurrelays:

• brand: Clare
• mpn: Hg3a1018

offer genpurrelays:

• sold #: 18
• started: july 6, 2025
• availability: in stock
• in stock #: 5
• best offers: true
• prices: $48.99–$199.99
• item condition:
  • New
  • New – Open box
  • Used
• options: ship-to-home

payments genpurrelays:

• wallet: google-pay
• other
• credit card: mastercard

general genpurrelays:

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

seller genpurrelays:

• # reviews: 1356
• rating: 99.7%
• city: sacramento, california

returns genpurrelays:

• policy: returns accepted
• paid by: buyer
• method: money back
• time: 30 days

shipping genpurrelays:

• carrier: usps
• type: fixed
• class: standard
• transit: 4-9 days
• service: usps ground advantage