MR-40-U20 ARROW HART Midget Relay Vac Coil

Review ARROW HART Lot Of Midget Relay 110 Vac Coil

The Arrow Hart MR-40-U20 Midget Relay is a versatile and reliable electromechanical switching device designed for use with 110VAC coils. This midget relay, with a size of only 1.2 inches in length and 0.9 inches in width, offers a compact footprint that makes it an excellent choice for various applications, particularly in confined spaces or where size reduction is essential.

The MR-40-U20 Midget Relay comes with a Form C normally open (NO) contact configuration, which means that it opens when the coil is energized and closes when the coil is de-energized. It features a silver-plated contact system, ensuring low contact resistance and excellent conductivity, resulting in reliable switching performance.

This Arrow Hart relay has a contact rating of 10 amps at 110VAC, allowing it to handle moderate current loads. It also supports a contact voltage of up to 300VAC for a short period, offering additional flexibility in various applications.

The MR-40-U20 Midget Relay is built with a robust construction, featuring a die-cast aluminum housing that provides superior heat dissipation and protection against harsh environments. Its sealing rating of IP30 ensures that it can withstand limited ingress of dust and moisture, making it suitable for some industrial applications.

The Arrow Hart MR-40-U20 Midget Relay is designed with a screw terminal block, allowing for easy wiring and installation. It also includes a built-in LED indicator, which illuminates when the coil is energized, making its status easily visible.

In summary, the Arrow Hart MR-40-U20 Midget Relay is a compact, reliable, and versatile switching solution for your 110VAC applications, offering excellent contact performance, rugged construction, and easy installation.

The Arrow Hart MR-40-U20 Midget Relay is a 110V AC coil relay designed for various applications, particularly in industrial and automation systems. Here are some pros and cons that may help you make an informed decision about purchasing this relay.

1. Reliable and Robust: Arrow Hart relays are known for their high reliability and robustness. The MR-40-U20 is no exception, as it is built to withstand harsh environments and heavy usage.

2. Versatile: This relay can be used in a wide range of applications, including motor control, machine automation, and power distribution.

3. Easy to Install: The MR-40-U20 comes with clear instructions and easy-to-use terminals, making it simple to install and integrate into your system.

4. Affordable: Compared to other relays in its class, the Arrow Hart MR-40-U20 is relatively affordable, making it an excellent value for the price.

1. Limited Switching Capacity: This relay has a relatively low switching capacity, making it unsuitable for applications that require high current or voltage.

2. Not Suitable for High-Frequency Applications: The MR-40-U20 is not designed for high-frequency applications and may not perform well in such environments.

3. Manual Override: The relay does not come with a manual override feature, which may be a drawback for some applications.

The Arrow Hart MR-40-U20 Midget Relay is a reliable and affordable option for applications that require a 110V AC coil relay with a moderate switching capacity. Its versatility and ease of installation make it an excellent choice for various industrial and automation applications. However, it may not be suitable for applications that require high current or voltage or high-frequency switching.

If you are looking for a reliable and affordable 110V AC coil relay with a moderate switching capacity, the Arrow Hart MR-40-U20 Midget Relay is an excellent choice. However, if you require a higher switching capacity or a different voltage, you may need to consider other options. Additionally, if high-frequency switching is a requirement, you may need to look for a relay specifically designed for that application.

Details:

#MB-20 lot of 2pcs condition: used item is in pre-owned condition and may show cosmetic wear from previous use or storage. Shipping: fast, free shipping on most orders. If its not pictured, included. Please review the photos carefully for condition and details.

specifications genpurrelays:

• brand: Arrow Hart
• mpn: Mr-40-u20
• type: Midget Relay

offer genpurrelays:

• options: ship-to-home
• prices: $24.99–$35.99
• item condition:
  • New – Open box
  • Used
• in stock #: 2
• sold #: 16
• availability: in stock
• started: september 19, 2025

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