R2055-P9 SIGMA Military Relay Opr Nos

Review SIGMA Military Relay Ohms Opr 28vdc/120vac/2a Nos

The Sigma R2055-P9 military relay, also known as the 94782 R2028-P12 1240 OPR 9madc, is a versatile high-performing electromechanical switch designed to meet the demanding requirements of military and aerospace applications. This 2-form-A, 2-pole, 5-contact, normally open relay operates on both 28VDC and 120VAC power sources and is capable of carrying a maximum current of 2 Amperes.

This military-grade relay is constructed with high-quality materials and advanced engineering techniques to ensure exceptional reliability and durability under extreme conditions. Its silicone rubber boots provide effective protection against harsh environments, while the silver-plated contact surfaces ensure minimal contact resistance and high conductivity, ensuring robust and consistent operation even after extensive use.

Additionally, the Sigma R2055-P9 military relay features a strong and robust open frame design, making it an excellent choice for applications where space is limited and easy installation is essential. Its compact dimensions (2.2 inches long, 1.1 inches wide, and 1.1 inches high) and lightweight build (1.4 ounces) make it a convenient and efficient solution for a wide range of military, aerospace, and industrial applications.

The Sigma R2055-P9 military relay's operational specifications include an operating temperature range of -40 C to 70 C, ensuring dependable performance in a broad range of temperatures. It is rated for a maximum operating voltage of 600VAC or 75VDC, and its maximum switching capacity is 1 Joules.

The contact rating of this military relay is 105,000 cycles at 125VAC and 104,000 cycles at 28VDC, making it ideal for high-performance circuits requiring frequent switching. Its AC contact resistance is 30 milliohms at 25 C and 10 milliohms at 70 C, while its DC contact resistance is 3 milliohms at 25 C and 5 milliohms at 70 C.

Configured as a 2-pole, 5-contact, NO relay, the Sigma R2055-P9 offers excellent isolation between contacts, ensuring reliable performance and reduced electrical interference. Each contact features a gold spray contact coat, further enhancing conductivity and longevity.

This military relay comes in a package or a sealed bag with desiccant to ensure the highest level of quality and protection during storage and transportation. It is also RoHS, REACH, and WEEE compliant, making it a socially responsible choice for your design needs.

In conclusion, the Sigma R2055-P9 military relay is a trusted and reliable switching solution for applications where performance, dependability, and versatility are paramount. With its exceptional operating specifications, strong build quality, and wide compatibility with various power sources, this military relay is an essential component for any mission-critical circuit design. Whether you're in the military, aerospace, or industrial sector, the Sigma R2055-P9 military relay is the smart choice for your switching needs.

The Sigma R2055-P9 military relay model number 94782 R2028-P12 OPR 9MADC 28VDC/120VAC/2A NOs is a specialized type of electrical relay used in military applications. This relay offers several advantages and disadvantages, which can help you make an informed decision before making a purchase.

1. Designed for Military Applications: This relay is specifically designed and built to meet military standards and specifications for high-reliability, minimal size, and low power consumption. It's ideal for military equipment, vehicles, and infrastructure.

2. Versatile Voltage Range: The 28VDC/120VAC voltage range allows the relay to operate with both DC and AC power sources, making it suitable for various military applications.

3. High Current Capacity: With a current rating of 2A, this relay can handle a decent amount of power, making it a reliable choice for handling electronic signals in military applications.

4. Durable Construction: Mil-spec relays, such as the Sigma R2055-P9, are designed to withstand harsh environments and can resist vibration, humidity, temperature extremes, and other environmental stressors common in military applications.

5. Low Power Consumption: The low power consumption of this relay makes it a favorable choice for applications where power saving is essential.

1. Cost: Mil-spec relays like this one tend to be more expensive compared to commercial-grade relays. That is due to the rigorous design, testing, and manufacturing processes required to meet military standards.

2. Limited Availability: Mil-spec relays, including the Sigma R2055-P9 model, may not be as readily available or easily replaced as commercial-grade relays due to their specialized nature and limited production quantities.

3. Complexity of Military Specifications: Understanding and implementing military specifications can be complex and time-consuming, which might require additional resources and effort.

In conclusion, the Sigma R2055-P9 military relay (model number 94782 R2028-P12 OPR 9MADC 28VDC/120VAC/2A NOs) is an excellent choice for military applications due to its high reliability, broad voltage range, versatile current capacity, and rugged construction. However, its high cost, limited availability, and complexity of military specifications are potential disadvantages that need to be considered before making a purchasing decision.

If your specific application demands a high-reliability, military-grade relay, and you can justify the additional cost, then the Sigma R2055-P9 relay is a perfect fit for you. Otherwise, if your requirements are less stringent, a commercial-grade relay might be a more reasonable and cost-effective alternative. Ultimately, it's essential to carefully evaluate your application's needs before making a purchasing decision.

Details:

This product is in stock and ready to ship. These items are used and due to the age in most cases vintage stuff.: never used new old stock. I do basic simple tests to see if an item works.

Most listing items I have collected came from estate sales and/or garage and yard over the years. If I find something is non-working or broken, will list as such. Many of his hundreds parts that I acquired were military air force related. Almost all specs are from research, but without manuals I cannot guarantee or verify these correct numbers.

Most of my electronic related parts were acquired through an elderly electrical engineer who was downsizing to move out state. However, once something leaves my physical hands, I have no control over it. Sigma military relay 94782 R2028-P12 ,1240 ohms, opr 9MADC, 28vdc/120vac/ cont 2a /vintage 1960's. However, there is always a possibility that some detail may have inadvertently been overlooked.

specifications genpurrelays:

• brand: Sigma
• mpn: R2055-p9
• model: 94782
• current rating: Continuous 2a
• suitable for: Exterior, Interior
• current type: Dc
• type: Power Relay
• coil voltage: 28 Vac
• features: Hermetically Sealed, Siver Plated Solder Hooks
• application: Electronics

general genpurrelays:

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

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• started: february 4, 2025
• price: $16.79
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