UN-SA721 MITSUBISHI Relay Fnip

Review MITSUBISHI Relay Fnip

The Mitsubishi Electric UN-SA721 is a versatile and reliable AC contactor designed for use in various industrial automation applications. This contactor is specifically designed to handle inrush currents up to 10 times the rated current, making it an excellent choice for motors and other loads with high starting currents.

The UN-SA721 is a single-phase, normally-open (NO) contactor that comes with a built-in coil. It is rated for a maximum voltage of 240V AC and a maximum current of 50A. The contactor's silver-plated copper contacts ensure a long service life and low contact resistance, which results in minimal power loss and reliable switching.

The UN-SA721 features a robust and compact design, with a dimension of 90mm (W) x 63mm (H) x 35mm (D). It is also designed to operate in environments with a temperature range of -10 C to 40 C, making it suitable for use in various industrial settings.

This contactor comes with a number of safety features, including a built-in thermal protector that prevents overheating and a short-circuit protector that safeguards against short-circuits. It also has a visible indication of coil operation, which helps in troubleshooting and maintenance.

The UN-SA721 is designed for easy installation and can be mounted on a DIN rail or a panel using the included mounting clips. The contactor comes with a clear and concise labeling of the terminals, making it easy to connect wires to the correct terminals.

In summary, the Mitsubishi Electric UN-SA721 is a high-performance and reliable AC contactor that is suitable for various industrial automation applications. Its robust design, safety features, and easy installation make it a popular choice among engineers and maintenance personnel.

1. Durable Construction: Mitsubishi is known for its high-quality industrial components, and the UN-SA721 relay is no exception. It is designed to withstand harsh industrial environments and can handle heavy current loads.

2. Compact Size: Despite its heavy-duty design, the UN-SA721 relay is relatively compact, making it suitable for use in applications where space is limited.

3. Versatile: The UN-SA721 relay can be used to control a wide range of motors and loads, making it a versatile option for industrial applications.

4. Reliable: Mitsubishi relays are known for their reliability, and the UN-SA721 is no different. It is built to last and can handle multiple cycles without failing.

1. Cost: The UN-SA721 relay is more expensive than some other options on the market. However, its high-quality construction and reliability may justify the higher cost for some applications.

2. Complexity: The UN-SA721 relay may be more complex to install and configure than some other options, especially for those without extensive electrical experience.

3. Size: While the UN-SA721 is compact for its class, it may still be larger than some other options, which could make it less suitable for applications where size is a major concern.

In conclusion, the Mitsubishi UN-SA721 relay is a high-quality, durable, and reliable option for industrial applications that require heavy-duty contactors or motor starters. Its compact size and versatility make it suitable for a wide range of applications, but its higher cost and complexity may be a deterrent for some buyers. Ultimately, the decision to purchase the UN-SA721 relay will depend on the specific requirements of the application and the budget of the buyer.

If the application demands a heavy-duty, reliable, and versatile contactor or motor starter, and budget is not a major concern, then the Mitsubishi UN-SA721 relay is a recommended option. However, if cost or size is a major concern, or if the application does not require the level of reliability and versatility offered by the UN-SA721, then other options may be more suitable.

Details:

Manufacturer part number: UN-SA721. Most items are in stock when they listed. The product must be the original item shipped, with matching serial numbers if applicable. The item may be missing the original packaging.

2-year MRI shield protection plan included. A new, unused item with no signs of wear. Special instructions. Mitsubishi UN-SA721 relay auxiliary device cc: nacre 2.

Mitsubishi UN-SA721 relay manufactured by Mitsubishi.

specifications genpurrelays:

• brand: Mitsubishi
• mpn: Un-sa721

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• sold #: 16
• prices: $1.44–$18.00
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• availability: in stock
• started: august 30, 2025
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• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays