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SEL Direct-Replacement Assemblies

SEL Direct-Replacement Assemblies

Streamline retrofit projects with complete assemblies designed to match the features, form-factor, and terminal blocks of legacy relays.

SEL direct-replacement assemblies are complete, preassembled retrofit kits—each designed to match the features, form-factor, and terminal block arrangement of a specific legacy relay. These assemblies combine field-proven SEL relays with specialized mounting plates, interposing terminal blocks, and other hardware to ensure quick and seamless upgrades.

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Streamlined Installation and Configuration

Each assembly is designed to fit the existing panel opening and mounting holes, minimizing the need for panel modifications. The terminal block arrangement and wiring designations closely match the prior installation, which dramatically reduces the impact on drawing sets, the likelihood of installation errors, and the time required for installation.

Purpose-Built Replacements

The following assemblies are now available, providing direct replacements for a range of legacy relays. SEL Engineering Services also accommodates requests for custom assembly designs to meet specific protection, communications, and mounting requirements.

    1. 1

      Local access port

    2. 2

      Mounting plate

    3. 3

      SEL-3421 Motor Relay HMI

    4. 4

      Control terminal blocks

    5. 5

      SEL-849 Motor Management Relay

    6. 6

      CT and PT terminal block

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    2
    3
    4
    5
    6
    1. 1

      SEL-710 Motor Protection Relay

    2. 2

      Front mounting plate

    3. 3

      Control and RTD terminal blocks

    4. 4

      Rear mounting plate

    5. 5

      CT and PT terminal block

    6. 6

      24 Vdc power supply

    1
    2
    3
    4
    5
    6
    1. 1

      SEL-710 Motor Protection Relay

    2. 2

      Mounting plate

    3. 3

      Preassembled frame

    4. 4

      Control and RTD terminal blocks

    5. 5

      CT and PT terminal block

    6. 6

      24 Vdc power supply

    1
    2
    3
    4
    5
    6
    1. 1

      SEL-3421 Relay HMI

    2. 2

      Local access port

    3. 3

      Mounting plate

    4. 4

      CT terminal block

    5. 5

      SEL-849 Motor Management Relay

    6. 6

      Control and PT terminal block

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    2
    3
    4
    5
    6

Comprehensive Support

All SEL products are backed by a worldwide, ten-year warranty; no-charge diagnostic and repair services; and local technical support. In addition, SEL Engineering Services offers complete design, settings conversion, installation, and commissioning services—providing turnkey retrofit solutions.

Contact Engineering Services to learn more about SEL direct-replacement assemblies.

Contact Engineering Services

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