751A51ABA0X0X850221 SEL Schweitzer Engineering Feeder Relay

Review SEL New Schweitzer Engineering Feeder Protection Relay

The Schweitzer Engineering Laboratories (SEL) 751A Feeder Relay, model number 751A51ABA0X0X850221, is a versatile and reliable protective device designed for power system applications. This particular model comes with the factory-installed 72850221 auxiliary contact set, making it an ideal choice for controlling auxiliary circuits or signaling other protective devices.

The 751A Feeder Relay is a digital protective device that utilizes microprocessor technology. It offers advanced protection schemes such as differential, inverse time, and directional overcurrent protection. This relay is designed to provide accurate and reliable protection for feeder circuits in power distribution systems, ensuring the safe and efficient operation of electrical equipment.

The relay is designed with a rugged and compact construction, making it suitable for installation in various environments. It has a high operating temperature range, making it suitable for use in harsh climates. The relay is also designed to be easily configurable, allowing users to customize its protective functions to meet the specific needs of their power system.

The 751A Feeder Relay comes with a wide range of communication options, including Ethernet, Modbus, and DNP3 protocols. This allows for seamless integration with other protective devices and control systems, making it an essential component of modern power system protection schemes.

The auxiliary contact set, 72850221, provides additional flexibility and functionality to the relay. It includes normally open and normally closed contacts that can be used to signal other protective devices or control external equipment. The contacts are rated for a maximum current of 1 A and a voltage range of 125 Vac to 600 Vac.

In summary, the Schweitzer Engineering Laboratories 751A Feeder Relay, model number 751A51ABA0X0X850221, is a versatile and reliable protective device designed for power system applications. Its advanced protective functions, rugged construction, and wide range of communication options make it an essential component of modern power system protection schemes. The included auxiliary contact set, 72850221, adds additional functionality and flexibility to the relay, making it a valuable investment for power system engineers and operators.

The Schweitzer Engineering Laboratories (SEL) 751A Feeder Relay is a protective relay used for various applications, including feeder protection and motor protection in power systems. Here are some pros and cons of buying this specific model, the SEL 751A51ABA0X0X850221 and the SEL 751A51ABA0X72850221:

1. High Reliability: SEL is known for its high-reliability products, and the 751A Feeder Relay is no exception. It is designed to withstand harsh environments and provide accurate and reliable protection.

2. Wide Application Range: The 751A Feeder Relay can be used in various applications, including motor protection, generator protection, and feeder protection.

3. Flexible Configuration: The relay can be configured to meet specific application requirements, including different fault detection and clearance algorithms.

4. Remote Monitoring and Control: The relay offers remote monitoring and control capabilities, allowing users to monitor the status of the relay and make configuration changes remotely.

5. Robust Communication Interfaces: The relay supports various communication interfaces, including Modbus, DNP3, and IEC 60870-5-104, making it easy to integrate with other systems.

1. High Cost: The SEL 751A Feeder Relay is a premium product, and its price tag reflects its advanced features and high reliability.

2. Complex Setup: The relay can be complex to set up, requiring specialized knowledge and training.

3. Limited Fault Types: While the relay offers a wide range of protection functions, it may not cover all possible fault types.

4. Limited Capacity: The relay may not be suitable for applications with high capacity requirements.

In conclusion, the SEL 751A Feeder Relay offers high reliability, flexibility, and robust communication interfaces, making it a suitable choice for applications where precise protection and remote monitoring are essential. However, its high cost, complex setup, and limited fault types and capacity make it a specialized product that may not be suitable for all applications.

If you are looking for a cost-effective solution with basic protection functions, you may want to consider alternative options. However, if you require advanced protection features, remote monitoring, and the reliability that SEL is known for, the SEL 751A Feeder Relay is an excellent investment. Ultimately, the decision to buy this relay depends on your specific application requirements and budget.

Details:

Brand: schweitzer engineering laboratories. Mfg part#: 751a#1597355. The box has been opened for photos, but the unit never installed. This is a brand new, ready-to-use protection relay.

Includes product literature on CD, factory test paperwork, and mounting hardware. Model #: 751A51ABA0X72850221. Condition: new in box. Contact outputs gen.

Protocols: Sel ASCII, compressed fast meter, operate, message, sear, mirrored bits communications, and mod bus rut. Schweitzer engineering laboratories feeder protection relay. Series: SEL-751A. Firmware revision: 751ar421-v2.

specifications genpurrelays:

• brand: Sel
• mpn: 751a51aba0x0x850221
• part type: Feeder
• country of origin: United States

shipping genpurrelays:

• service: ups ground, ups 2nd day air, ups next day air
• carrier: ups
• transit: 2-5 days
• class: standard, expedited, one-day
• type: calculated

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• other
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general genpurrelays:

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

Seller genpurrelays:

• rating: 99.9%
• city: belgium, wisconsin
• # reviews: 10110

returns genpurrelays:

• policy: returns accepted
• method: money back
• paid by: buyer
• time: 30 days

offer genpurrelays:

• options: ship-to-home
• best offers: true
• price: $3450.00
• item condition: New
• availability: in stock
• in stock #: 2
• sold #: 19
• started: june 15, 2026