ESR5-NO-21-24VAC-DC EATON Relays

Review EATON Relays

The Eaton ESR5-NO-21-24VAC-DC is a versatile and reliable electromechanical relay designed for use in a wide range of applications where switching low voltage AC or DC circuits is required. This particular model has a contact rating of 21A at 250VAC or 30VDC, making it suitable for handling moderate currents and voltages.

The ESR5-NO-21-24VAC-DC is a normally open (NO) type relay, meaning that when the coil is de-energized, the contacts are open. Upon application of a voltage to the coil, the contacts close, allowing current to flow between the NO terminals. This feature is beneficial for applications where the desired circuit state is open until a specific input signal is received.

This relay comes equipped with a form C coil, which is a common coil configuration for many applications. The coil requires a voltage of 24VDC to operate, and it draws a maximum current of 200mA during coil energization. The contacts are rated for 25 million cycles, ensuring long-lasting performance even in high-use applications.

The contacts are made of silver alloy, which provides excellent electrical conductivity and minimizes contact resistance. This results in faster switching times and reduced power losses compared to relays with copper contacts. Additionally, silver contacts are more resistant to wear and corrosion, contributing to the overall durability of the relay.

The ESR5-NO-21-24VAC-DC is housed in a robust, die-cast aluminum enclosure with an IP20 rating. The enclosure provides excellent heat dissipation, ensuring that the relay stays cool even during prolonged operation, while the IP20 rating indicates that the relay is protected against the intrusion of dust and water splashes from all directions. This makes it suitable for use in various environments, including industrial and commercial applications.

In conclusion, the Eaton ESR5-NO-21-24VAC-DC is a high-performance, reliable, and versatile electromechanical relay that offers excellent contact life, fast switching times, and robust construction. Its ability to handle moderate currents and voltages, combined with its compact size and rugged design, makes it an ideal choice for a wide range of applications.

Eaton ESR5-NO-21-24VAC-DC relays are electromechanical devices used for switching electrical circuits. Here are some pros and cons of buying these relays:

1. High Reliability: Eaton is a well-known brand in the electrical industry, and their ESR5-NO-21-24VAC-DC relays are known for their high reliability and durability. They are built using robust materials and are designed to handle heavy switching loads, making them ideal for industrial applications.

2. Wide Operating Voltage Range: These relays can operate on a wide voltage range of 21 to 24VAC, making them suitable for use in various applications where the voltage levels may vary.

3. Compact Design: The ESR5-NO-21-24VAC-DC relays have a compact design, making them easy to install and integrate into various systems. They are also lightweight, which makes them easy to transport and handle.

4. High Switching Capacity: These relays have a high switching capacity, which makes them suitable for applications where large currents need to be switched. They can handle up to 5 amps of continuous current and up to 10 amps of surge current.

5. Low Power Consumption: The ESR5-NO-21-24VAC-DC relays have a low power consumption, which makes them an energy-efficient option for applications where power consumption is a concern.

1. Higher Cost: Compared to other relays in the market, the Eaton ESR5-NO-21-24VAC-DC relays are relatively more expensive. This may be a limiting factor for some buyers who have a tight budget.

2. Electromechanical Design: These relays have an electromechanical design, which means they have moving parts that can wear out over time. This can lead to maintenance issues and potentially higher operating costs.

3. Limited Switching Frequency: The ESR5-NO-21-24VAC-DC relays have a relatively low switching frequency, which may not be suitable for applications where high switching speeds are required.

4. Limited Operating Temperature Range: These relays have a limited operating temperature range of -40 C to 70 C. This may not be suitable for applications where the temperature conditions are extreme.

The Eaton ESR5-NO-21-24VAC-DC relays offer several advantages, including high reliability, wide operating voltage range, compact design, high switching capacity, and low power consumption. However, they also have some disadvantages, such as a higher cost, electromechanical design, limited switching frequency, and limited operating temperature range.

Based on the above analysis, these relays are recommended for applications where reliability, durability, and high switching capacity are essential, and the operating conditions are within the specified voltage and temperature ranges. They are also suitable for applications where energy efficiency is a priority. However, if cost is a significant factor, or if high switching frequencies or extreme temperature conditions are expected, other relay types may be a better option.

Details:

Was in working condition before removal.

specifications genpurrelays:

• brand: Eaton
• mpn: Esr5-no-21-24vac-dc
• type: Relays
• weight: 8.00

offer genpurrelays:

• availability: in stock
• options: ship-to-home
• prices: $175.00–$197.58
• item condition:
  • New – Open box
  • New
  • Gebraucht
  • Used
• started: march 13, 2025
• sold #: 33
• in stock #: 5

seller genpurrelays:

• city: greenleaf, wisconsin
• # reviews: 7
• rating: 100.0%

returns genpurrelays:

• policy: no returns

general genpurrelays:

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

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