1. General Purpose Relays Items
  2. sku: 12676155100149641
  3. TELEDYNE GRF303-5

GRF303-5 TELEDYNE Relay

GRF303-5 TELEDYNE Relay
Product Information
BrandTELEDYNE
Manufacturer Part NumberGRF303-5

Review TELEDYNE Relay

The Teledyne GRF303-5 is a versatile, high-performance, and compact general-purpose relay designed for various applications, particularly in industrial automation, process control, and test and measurement systems.

This relay features a hermetically-sealed, solid-state design, ensuring optimal reliability and longevity even in harsh environments. It can withstand temperatures ranging from -40 C to 85 C (-40 F to 185 F), making it suitable for use in a broad range of industrial applications.

The GRF303-5 is a 5-pole, 5-throw, normally-open (NO) relay. Each pole can handle up to 1 ampere (A) of current and 30 volts (V) of AC or DC voltage. The relay's contact resistance is less than 5 milliohms (m ), ensuring reliable switching and minimizing contact bounce.

The relay has a self-latching mechanism, which means that once the coil is energized, the contacts will remain closed until the coil is de-energized. This feature is particularly useful in applications where it is essential to maintain the switched state even when the control signal is removed.

The GRF303-5 is housed in a compact, rugged, and epoxy-coated aluminum housing, which provides excellent protection against vibration, shock, and other environmental hazards. The relay's terminals are gold-plated to prevent oxidation and ensure good electrical contact.

The relay's coil is isolated from the ground, making it suitable for use in applications with floating grounds or high-impedance control circuits. It also features a built-in diode across each coil, which protects the coil from voltage spikes that may occur when the contacts open or close.

The GRF303-5 is available in several configurations, including standard, high-temperature, and low-noise versions, to meet specific application requirements. This relay is a reliable and robust solution for various industrial applications that require efficient and dependable switching of electrical circuits.

The Teledyne GRF303-5 is a commonly used opto-isolated relay with specifications that include a coil voltage range of 12-30V DC, contact rating of 10A at 250V AC, and a switching capacity of 500V AC at 10A. Like any other electrical component, this relay has its advantages and disadvantages.

Advantages:

1. Opto-isolation: The GRF303-5 provides electrical isolation between the control and load circuits, which is essential in many applications to prevent electrical interference and potential damage to the control circuit.

2. High switching capacity: With a switching capacity of 500V AC at 10A, the GRF303-5 is capable of handling high voltage and current loads, making it suitable for various industrial applications.

3. Long life: The relay's gold-plated contacts and robust construction ensure a long service life, reducing the need for frequent replacements.

Disadvantages:

1. Size and weight: The GRF303-5 is a larger and heavier relay compared to some other options in the market, which may not be ideal for applications where space and weight are a concern.

2. Cost: With its high switching capacity and rugged construction, the GRF303-5 is a more expensive option compared to lower-rated relays.

3. Limited coil voltage range: While the GRF303-5's coil voltage range of 12-30V DC is suitable for many applications, it may not be sufficient for applications requiring higher or lower coil voltages.

In conclusion, the Teledyne GRF303-5 is a reliable and robust opto-isolated relay suitable for industrial applications requiring high switching capacity and electrical isolation. Its advantages, such as opto-isolation, long life, and high switching capacity, make it an excellent choice for specific applications. However, its disadvantages, including size and weight, cost, and limited coil voltage range, may make it less ideal for other applications where smaller, more cost-effective, or differently rated relays would be more suitable.

Recommendation:

If you require an opto-isolated relay with high switching capacity for industrial applications, the Teledyne GRF303-5 is a recommended option. However, if you have different requirements, such as a smaller size, lower cost, or different coil voltage range, consider other options in the market that better suit your needs.

Details:

Manufacturer: Teledyne. Please if you are unsatisfied for any reason with the service. Listing is for 1 PC.

Item must be unused, new, and in original, unopened packaging. Item is in new condition. Ups, FedEx and other carriers are available. Part number: GRF303-5.

specifications genpurrelays:

  • brand: Teledyne
  • mpn: Grf303-5

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

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  • sold #: 14
  • started: november 4, 2025
  • prices: $82.14–$119.88
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rating: 100.0% out of 100 based on 939 user ratings.
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