{"product_id":"1756-tbch-allen-bradley-controllogix-36-pin-cage-clamp-rtb","title":"1756-TBCH Allen-Bradley ControlLogix 36-Pin Cage Clamp RTB","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-TBCH\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a 36-position Removable Terminal Block (RTB) designed specifically for high-density ControlLogix I\/O modules. It provides the critical interface between field wiring and the PLC hardware, allowing for seamless connection of sensors, actuators, and power sources. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ein factory packaging. This component is essential for any 1756-series module requiring a 36-pin connection, ensuring a gas-tight, vibration-resistant termination for industrial environments.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTechnical Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eConnection Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCage Clamp (Screw-actuated)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNumber of Positions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e36 Terminals\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWire Size Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e22–14 AWG (Solid or Stranded)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eScrewdriver Width\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3.2 mm (1\/8 in.)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eScrew Torque\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.5 Nm (4.4 lb-in) to 0.6 Nm (5 lb-in)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIsolation Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e250V Continuous (Basic Insulation)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eHousing Style\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLow-Profile \/ Standard\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eFront-mount on 1756 I\/O Modules\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 60 °C (32 to 140 °F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct Net Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.14 kg (0.31 lbs)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2.00 kg (Securely packed for logistics)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eZero-Downtime Maintenance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1756-TBCH allows users to replace I\/O modules without disconnecting a single field wire. Technicians simply unlock the RTB, swap the module, and re-seat the block, reducing Mean Time to Repair (MTTR) from hours to minutes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMechanical Keying Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis terminal block supports mechanical keying to prevent accidental insertion into the wrong type of I\/O module. This safeguard eliminates the risk of applying high-voltage signals to low-voltage logic circuits during maintenance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuperior Connection Stability:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe cage clamp design applies constant pressure to the wire, which compensates for thermal expansion and mechanical vibration. Unlike standard screw terminals that may loosen over time, the 1756-TBCH maintains a low-resistance path in high-vibration machinery applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Density Wiring Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe low-profile housing organizes 36 distinct wires within a 35mm width. This density enables high-point-count I\/O configurations while maintaining a clean, professional appearance inside the control panel.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the 1756-TBCH and the 1756-TBS6H?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1756-TBCH uses a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCage Clamp\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(screw-actuated clamp) which requires a screwdriver to tighten the wire. The 1756-TBS6H uses a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSpring Clamp\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(push-in style). Both feature 36 pins and fit the same modules, but the TBCH is preferred for applications where specific torque settings must be documented for compliance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich Allen-Bradley modules require the 1756-TBCH?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis RTB is required for high-density digital and analog modules, such as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-IB32\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-OB32\u003c\/strong\u003e, and certain 1756-series analog modules. Standard 16-point modules typically use the 20-pin 1756-TBNH instead. Always check your I\/O module's user manual to confirm pin count.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I reuse a 1756-TBCH when upgrading my PLC?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, as long as the terminal block is in good physical condition and the new module supports 36-pin RTBs. However, we recommend inspecting the clamps for fatigue or oxidation. Given the critical role of the RTB, many engineers install a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBrand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1756-TBCH during system overhauls to ensure maximum connection reliability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 1756-TBCH include the housing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, this part number includes the 36-pin terminal block and the standard low-profile housing that protects the wiring and provides the locking latch for the I\/O module.\u003c\/p\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":43359181897818,"sku":"1756-TBCH","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/5._a8926d1b-cb5b-4228-af69-bc8f96a6cfcd.jpg?v=1778636440","url":"https:\/\/www.spareoil.com\/products\/1756-tbch-allen-bradley-controllogix-36-pin-cage-clamp-rtb","provider":"SpareOil Automation","version":"1.0","type":"link"}