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  • Leviton 4x12 Telephone Distribution Board (47603-12B/12M) — Component Specifications

    September 08, 2026 2 min read

    Component specifications for the Leviton 4x12 Telephone Distribution Board (47603-12B / 47603-12M) — distributes up to four telephone lines through 12 telephone connections for phone, fax, or modem service.

    Full text manual (for reference)

    Component specifications for the Leviton 4x12 Telephone Distribution Board (47603-12B / 47603-12M) — distributes up to four telephone lines through 12 telephone connections for phone, fax, or modem service.

    Overview

    The 4x12 Telephone Distribution Board distributes up to four telephone lines through 12 telephone connections, suitable for phone, fax, or modem. The board includes a dedicated plastic mounting bracket for essential telephone distribution and is designed for easy installation in any Leviton 140, 280, or 420 Structured Media™ enclosure. It links with other distribution boards, modules, or panels to expand the system. Two configurations are available: board only (47603-12B) or the board with an on-shelf bracket (47603-12M).

    Features

    • 12 modular RJ-45 jack outputs
    • 4-pair 110-type IDC inputs
    • Distributes up to four telephone lines through 12 connections

    Design Considerations

    • Fits easily into any Leviton Structured Media enclosure, or can be used as a stand-alone unit
    • Determine outlet locations and carefully plan cable routing to ensure the selected board satisfies requirements
    • Additional Category 5e Voice and Data Boards available separately

    Standards Compliance

    • cULus Listed
    • TIA/EIA-568A compliant
    • FCC Part 68 compliant

    Physical Specifications

    Bracket Material ABS plastic, white
    Bracket Dimensions 6.13"H x 13.30"W x 2.28"D
    Telephone Distribution Board Printed circuit board with 12 8P8C jacks for 4-line distribution
    Board Dimensions 5.8"H x 3.5"W x .063"D

    Part Numbers

    4x12 Telephone Distribution Board, board only 47603-12B
    4x12 Telephone Distribution Board, on-shelf bracket 47603-12M

    Warranty

    Two-year limited product warranty.

    Support

    Leviton Mfg. Co., Inc. — 59-25 Little Neck Pkwy, Little Neck, NY 11362-2591. Phone: 1-800-323-8920 · Tech Line: 1-800-824-3005 · Fax: 1-800-832-9538 · www.leviton.com.