SEL-751 & SEL-411L Protection Relays | Original SEL New
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Highlight
SEL-751 protection relay original
,SEL-411L breaker contactor relay
,SEL protection relays with warranty
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Reliability GradeUtility Grade / Mission Critical
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Protocol SupportSEL Mirrored Bits / IEC 61850
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Logic EngineSELogic Equations
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Mounting TypePanel Mount / Rack Mount
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Shipping TermInternational Express（DHL/FEDEX/TNT/UPS/ARAMEX）/sea Freight / Air Freight / International Special Line
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Freight ChargeFor Industrial Equipment (e.g., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote
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Place of OriginUSA
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Brand NameSEL
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CertificationIEEE / IEC 、CE & UL、ISO
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Model NumberSEL-751、SEL-411L
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Minimum Order Quantity1
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Price$450 - $5,500
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Packaging Detailsoriginal package
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Delivery Time3-5Workdays
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Payment TermsL/C,D/A,D/P,T/T,Western Union
SEL-751 & SEL-411L Protection Relays | Original SEL New
SEL-751 & SEL-411L Protection Relays | Original SEL New
Product Highlights
- Hardened Cybersecurity: Integrated secure communication protocols to protect critical infrastructure from cyber threats.
- High-Speed Protection: Sub-cycle line differential and distance protection with the SEL-411L series.
- Versatile Logic: Advanced SELogic allows for complex automation and interlocking without external PLCs.
Technical Specifications
| Feature | SEL-751 (Feeder) | SEL-411L (Differential) |
|---|---|---|
| Primary Focus | Feeder Protection & Arc Flash | Line Differential & Distance |
| Communication | Ethernet, Modbus, DNP3 | Dual Ethernet, Mirrored Bits |
| Arc Flash Support | Yes (Fiber Optic) | No |
| Protection Speed | Standard High-Speed | Sub-cycle Line Protection |
| Software Support | AcSELerator QuickSet | AcSELerator QuickSet |
Application Fields
- Utility Substations: Main and backup protection for transmission and distribution.
- Renewable Energy: Secure integration of wind and solar farms.
- Heavy Industry: Protection for large mining, chemical, and metal processing plants.
- Microgrids: Advanced logic for islanding and synchronization.
Frequently Asked Questions
Q: Does the SEL-751 include arc flash sensors?
A: The relay supports arc flash detection, but fiber-optic sensors are typically ordered as separate accessories.
Q: Can I use the SEL-411L for long-distance transmission lines?
A: Yes, it is specifically designed for high-speed line differential and distance protection over fiber or serial links.
Q: Is the AcSELerator QuickSet software included?
A: We provide the necessary technical documentation; the software is usually available through SEL's official portal.
Q: How do you verify the 10-year warranty?
A: SEL products are famous for their 10-year warranty. We provide original units with valid serial numbers for registration.
Q: Are these units made in the USA?
A: Yes, SEL products are primarily engineered and manufactured in the USA.
Q: What is the configuration for a standard SEL-751-5-1-1-A?
A: This configuration typically includes standard I/O, 125/250 Vdc power, and standard communication ports.
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