RY-539 STANDARD MOTOR PRODUCTS Relay

Review STANDARD MOTOR PRODUCTS Relay

The Standard Motor Products Ry-539 is a versatile and reliable Normally Open (NO) SPST (Single Pole Single Throw) relay. This electrical component is designed to switch an electrical circuit when it receives a signal. The Ry-539 is ideal for various applications, including automotive, industrial, and OEM (Original Equipment Manufacturer) uses.

The relay has a form factor of 30mm x 17.5mm x 11mm (L x W x H) and a weight of approximately 0.11 lbs (50g). It features a gold-plated silver contact set and a 2-pin PCB mounting base for easy installation. The contacts are rated for a maximum voltage of 30V DC and a maximum current of 10A.

The Ry-539 is designed to operate in a temperature range of -40 C to 85 C (-40 F to 185 F), making it suitable for a wide range of environments. It has a coil resistance of 50 ohms and a coil inductance of 0.23 mH. The relay has a contact bounce time of approximately 20 ms, ensuring smooth and reliable switching operations.

The coil of the Ry-539 is rated for a maximum voltage of 12V DC and a maximum current of 0.2A. It is designed to switch a maximum power load of 100 watts. The relay also features a built-in diode across the coil to protect against inductive kickback.

The Ry-539 comes with a clear, protective cover over the contacts to prevent contamination and ensure a long service life. It is also RoHS compliant, making it an environmentally friendly choice for your electrical applications.

In summary, the Standard Motor Products Ry-539 is a robust and versatile relay suitable for various applications. Its gold-plated silver contact set, wide operating temperature range, and reliable switching performance make it a top choice for those seeking a reliable and cost-effective solution for their electrical switching needs.

Buying a Standard Motor Ry-539 relay involves weighing its features, advantages, and potential drawbacks to determine if it's the right choice for your application. Here's a detailed analysis:

1. Normally-Open (NO) and Form A contacts: The Ry-539 is a single-pole, double-throw (SPDT) relay. It has two sets of NO contacts, which are widely used in various applications due to their ability to disconnect a circuit when not in use.

2. 5A Contact Rating: This relay can handle a maximum contact current of 5 Amperes, making it suitable for low to medium power applications.

3. 250VAC Operating Voltage: It can operate on a wide voltage range, including 250VAC, which is beneficial in industrial or heavy-duty applications.

4. Mechanical Relay: It is a mechanical relay, which can handle high inrush currents and is less susceptible to electrical noise compared to solid-state relays.

1. Manual Operation: As a mechanical relay, it requires a physical switch to operate, which may not be ideal for applications requiring automatic switching.

2. Limited Cycle Life: Mechanical relays have a finite number of switching cycles, and the Ry-539 has a specified cycle life of 10,000 to 50,000 cycles, depending on the operating conditions.

3. Size and Weight: The Ry-539 is a larger and heavier relay compared to solid-state relays, making it less suitable for space-constrained applications or those requiring minimal components.

The Standard Motor Ry-539 relay is an excellent choice for applications requiring normally-open contacts, medium power handling, and wide operating voltage range. Its mechanical design offers benefits like high inrush current handling and resistance to electrical noise. However, its manual operation, limited cycle life, and larger size make it less suitable for applications requiring automatic switching, high switching frequencies, or minimal components.

If your application falls within the Ry-539's capabilities and you're not concerned about the manual operation or size, then the Standard Motor Ry-539 relay can be a reliable and cost-effective solution. However, if you require automatic switching, high switching frequencies, or minimal components, you may want to consider a solid-state relay or a different mechanical relay with a longer cycle life.

Details:

Standard motor products RY-539 relay. Bulk, not in box.

specifications genpurrelays:

• brand: Standard Motor Products
• mpn: Ry-539
• part type: Motor
• measurement system: Imperial
• contact material: Silver
• contact type: Normally Open
• connector type: Screw
• mounting type: Din Rail Mount
• unit count: 1.0
• upc: 091769856489
• package dimensions lxwxh: 5.3x3.78x2.7 Inches
• weight: 1.56 Pounds

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• rating: 98.9%
• # reviews: 897
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• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays

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• policy: returns accepted
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• time: 30 days
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offer genpurrelays:

• options: ship-to-home
• sold #: 12
• availability: in stock
• quantity: 1
• started: october 18, 2025