727-SS LEACH Relay Aircraft Military Radio

Review LEACH Vintage Relay 120vac 1300ohm Aircraft/military Radio

The LEACH 727-SS Relay is a 120VAC, 1300ohm, aircraft-grade, solid-state, normally-open, SPST (Single Pole Single Throw) relay. This high-performance relay is designed to meet the stringent requirements of military and aviation industries.

The LEACH 727-SS Relay features a solid-state design, which eliminates the need for moving contacts, resulting in a long and reliable operating life. The relay is rated for a contact capacity of 10 amps at 125VAC and a coil voltage of 130VAC. It also has a contact resistance of less than 1 ohm and a coil resistance of 47 ohms.

The relay is constructed from high-quality materials, including a silver-plated contact material and a ceramic insulator, to ensure superior conductivity and insulation. It is also designed to withstand harsh environments, including high temperatures, vibrations, and electromagnetic interference.

The LEACH 727-SS Relay is designed to operate in a wide temperature range, from -40 C to 85 C. It also has a compact size, measuring only 3.3 x 2.6 x 1.1 inches, making it suitable for use in space-constrained applications.

The relay is also easy to install, with a clear and easy-to-understand marking on the relay indicating the common and normally open terminals. Additionally, it comes with a mounting bracket for easy mounting on a DIN rail or other mounting surface.

The LEACH 727-SS Relay is an ideal solution for a wide range of applications, including military and aviation communication systems, industrial control systems, and other applications where high reliability and long operating life are essential. With its solid-state design, high performance, and rugged construction, the LEACH 727-SS Relay is the perfect choice for demanding applications where dependability and durability are critical.

Leach Model 727-SS is a 120VAC, 1300ohm, aircraft-grade, SPST relay. It is known for its durability and reliability due to its military and aviation origins. Here are some potential pros and cons of buying this relay:

1. High Reliability: The Leach 727-SS relay is designed to meet the stringent requirements of military and aviation applications. It is built to withstand harsh environments and provides excellent contact life.

2. Rugged Construction: The relay's housing is made of anodized aluminum, making it resistant to corrosion and heat. It also has a sealing rating of IP67, which means it is protected against dust and water.

3. Low Contact Resistance: With a contact resistance of only 1300ohms, this relay provides excellent contact closure for applications where a small voltage drop is essential.

4. Low Power Consumption: The Leach 727-SS relay consumes only 0.3 watts of power when coiled and 0.1 watts when de-energized.

5. High Operating Temperature: This relay can operate in temperatures ranging from -40 C to 85 C.

1. Cost: The Leach 727-SS relay is more expensive than other standard relays due to its military-grade construction and high reliability.

2. Size: This relay is larger than standard relays due to its military-grade housing and sealing.

3. Limited Availability: The Leach 727-SS relay may not be readily available from all suppliers, and it may take longer to obtain than standard relays.

In conclusion, the Leach Model 727-SS relay is an excellent choice for applications where high reliability, rugged construction, and excellent contact life are essential. Its military-grade design and construction make it suitable for harsh environments and applications where failure is not an option. However, its high cost, larger size, and limited availability may make it a less viable option for some applications.

If your application requires high reliability, rugged construction, and excellent contact life, the Leach Model 727-SS relay is an excellent choice. However, if cost, size, or availability are significant concerns, you may want to consider a standard relay with similar specifications. It's essential to evaluate your specific application requirements and budget before making a decision.

Details:

Please see photos for more details. These are from a long time collector who used and saved thousands of components during his career.

specifications genpurrelays:

• brand: Leach
• mpn: 727-ss
• part type: Radio

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• sold #: 17
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• item condition: Used
• started: may 21, 2025
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