{
  "id": 3,
  "title": "JBK5 Machine-Tool Control Transformers",
  "family": "Machine Tool Control Transformers",
  "description": "Integrated-terminal control transformers for machinery and auxiliary lighting.",
  "sections": [
    {
      "heading": "Construction and development",
      "paragraphs": [
        "The series is described as based on German transformer designs introduced in the mid-1990s and developed further from JBK3 with features of comparable overseas products. Terminal blocks are integrated with the bobbin to reduce accidental contact; the brochure prints the protection designation IP2LX. Cold-pressed connection terminals permit more compact wiring.",
        "Argon-arc welding joins the silicon-steel laminations to one another and to the base plate as an integrated assembly. The base is formed in one operation for more accurate mounting dimensions than JBK3. Corrosion-resistant alloy materials are used to improve the reliability of the earthing connection.",
        "The brochure states conformity with VDE0550, IEC204-1, EC439, JB5555 and GB5226 and describes interchangeability with overseas products. These references are retained as printed and are not independently verified certification claims."
      ]
    },
    {
      "heading": "Applications",
      "paragraphs": [
        "For AC 50/60 Hz, input voltage not exceeding 500 V and rated output voltage not exceeding 220 V. Supplies control circuits, task lighting and signal lamps for mechanical equipment and general electrical apparatus."
      ]
    },
    {
      "heading": "Model designation",
      "paragraphs": [
        "JB: machine-tool transformer; K: control; 5 or 6: design sequence; suffix: rated capacity; tropical-service code TH: humid tropical, TA: dry tropical."
      ]
    }
  ],
  "specifications": [],
  "models": [],
  "tables": [
    {
      "caption": "Overall and mounting dimensions; separate installation variants",
      "columns": [
        "Model",
        "Bmax",
        "Dmax",
        "Emax",
        "Mounting A",
        "Mounting C",
        "Mounting hole K or K×J",
        "Fmax",
        "Arrangement"
      ],
      "rows": [
        [
          "JBK5-63",
          "78",
          "59",
          "85",
          "57±0.15",
          "46±0.125",
          "4.6",
          "1.5",
          ""
        ],
        [
          "JBK5-100",
          "86",
          "86",
          "95",
          "64±0.15",
          "62±0.15",
          "4.6",
          "1.5",
          ""
        ],
        [
          "JBK5-160",
          "96",
          "90",
          "105",
          "83±0.175",
          "73±0.5",
          "5.5",
          "1.5",
          ""
        ],
        [
          "JBK5-250",
          "96",
          "100",
          "105",
          "80±0.175",
          "85±0.175",
          "5.8",
          "1.5",
          ""
        ],
        [
          "JBK5-400",
          "120",
          "102",
          "125",
          "90±0.175",
          "84±0.175",
          "5.8",
          "2",
          ""
        ],
        [
          "JBK5-630",
          "150",
          "111",
          "150",
          "122±0.2",
          "90±0.175",
          "7",
          "2",
          ""
        ],
        [
          "JBK5-800",
          "150",
          "120",
          "150",
          "122±0.2",
          "105±0.2",
          "7",
          "2",
          ""
        ],
        [
          "JBK5-1000",
          "150",
          "120",
          "145",
          "122±0.2",
          "105±0.2",
          "7",
          "",
          "Upright"
        ],
        [
          "JBK5-1000",
          "160",
          "195",
          "150",
          "130±0.2",
          "148±0.2",
          "7",
          "",
          "Horizontal"
        ],
        [
          "JBK5-1600",
          "184",
          "220",
          "163",
          "145±0.2",
          "170±0.2",
          "7",
          "",
          "Horizontal"
        ],
        [
          "JBK5-2500",
          "200",
          "250",
          "170",
          "170±0.2",
          "210±0.2",
          "7",
          "",
          "Horizontal"
        ]
      ]
    }
  ],
  "notes": [
    "The protection notation IP2LX and standard reference EC439 are retained exactly as printed; confirm the specified enclosure class and applicable standard edition when ordering.",
    "Blank Fmax cells are blank in the source table."
  ],
  "slug": "jbk5-machine-tool-transformers",
  "category": "industrial-transformers",
  "categoryTitle": "Industrial Transformers",
  "relatedCategories": [],
  "image": "/catalog/products/jbk5-machine-tool-transformers.webp",
  "href": "/products/series/jbk5-machine-tool-transformers",
  "pdfPage": 5,
  "side": "right",
  "sheet": "/catalog/sheets/05-right.webp",
  "sheetWidth": 1007,
  "sheetHeight": 1375
}