{
  "id": 2,
  "title": "JBK3 Machine-Tool Control Transformers",
  "family": "Machine Tool Control Transformers",
  "description": "50/60 Hz single-phase transformers for machinery control and lighting.",
  "sections": [
    {
      "heading": "Application scope",
      "paragraphs": [
        "The brochure describes this series as a design developed with reference to a German Siemens sample and states conformity with VDE0550, IEC204-1, IEC439 and GB5226. These are brochure statements, not independently verified certification claims.",
        "Suitable for AC 50/60 Hz, rated input voltage not exceeding 1000 V and output voltage not exceeding 1000 V. Used for control circuits, task lighting and signal lamps in mechanical equipment and general electrical apparatus across industries."
      ]
    },
    {
      "heading": "Model designation",
      "paragraphs": [
        "JB: machine-tool transformer; K: control; 3: design sequence; suffix: rated capacity."
      ]
    },
    {
      "heading": "Dimension drawings",
      "paragraphs": [
        "The brochure labels its drawing groups JBK3-40–630 and JBK3-1000–2500."
      ]
    }
  ],
  "specifications": [],
  "models": [],
  "tables": [
    {
      "caption": "Overall and mounting dimensions; upright and horizontal variants retained separately",
      "columns": [
        "Model",
        "Bmax",
        "Dmax",
        "Emax",
        "Mounting A",
        "Mounting C",
        "Mounting hole K or K×J",
        "Fmax",
        "Arrangement"
      ],
      "rows": [
        [
          "JBK3-63",
          "78",
          "85",
          "83",
          "55±0.4",
          "56±2",
          "4.8×9",
          "12",
          ""
        ],
        [
          "JBK3-100",
          "86",
          "90",
          "95",
          "64±0.4",
          "67±2",
          "4.8×9",
          "12",
          ""
        ],
        [
          "JBK3-160",
          "96",
          "95",
          "105",
          "84±0.4",
          "70±2",
          "5.8×11",
          "14",
          ""
        ],
        [
          "JBK3-250",
          "96",
          "115",
          "105",
          "84±0.4",
          "85±2",
          "5.8×11",
          "14",
          ""
        ],
        [
          "JBK3-300",
          "120",
          "115",
          "120",
          "90±0.4",
          "80±2",
          "7×12",
          "",
          ""
        ],
        [
          "JBK3-400",
          "120",
          "120",
          "120",
          "90±0.4",
          "85±2",
          "7×12",
          "18",
          ""
        ],
        [
          "JBK3-500",
          "120",
          "125",
          "120",
          "90±0.4",
          "97±2",
          "7×12",
          "",
          ""
        ],
        [
          "JBK3-630",
          "150",
          "120",
          "145",
          "122±0.4",
          "86±2",
          "7×12",
          "22",
          ""
        ],
        [
          "JBK3-1000",
          "150",
          "145",
          "145",
          "122±0.4",
          "107±2",
          "7×12",
          "18",
          "Upright"
        ],
        [
          "JBK3-1000",
          "160",
          "195",
          "150",
          "130±0.4",
          "148±2",
          "",
          "",
          "Horizontal"
        ],
        [
          "JBK3-1600",
          "184",
          "220",
          "163",
          "145±0.4",
          "170±2",
          "7×12",
          "18",
          ""
        ],
        [
          "JBK3-2500",
          "200",
          "250",
          "170",
          "170±0.4",
          "210±2",
          "7×12",
          "18",
          ""
        ]
      ]
    }
  ],
  "notes": [
    "Blank Fmax and hole cells are reproduced as printed; the two JBK3-1000 variants must not be combined."
  ],
  "slug": "jbk3-machine-tool-transformers",
  "category": "industrial-transformers",
  "categoryTitle": "Industrial Transformers",
  "relatedCategories": [],
  "image": "/catalog/products/jbk3-machine-tool-transformers.webp",
  "href": "/products/series/jbk3-machine-tool-transformers",
  "pdfPage": 5,
  "side": "left",
  "sheet": "/catalog/sheets/05-left.webp",
  "sheetWidth": 1006,
  "sheetHeight": 1375
}