{"product_id":"allen-bradley-1771-wb-wiring-arm","title":"Allen-Bradley 1771-WB Wiring Arm","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-WB\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1771-WB\u003c\/strong\u003e Wiring Arm, operates as a dedicated hardware component for field signal termination and swing-arm connection within Allen-Bradley 1771 I\/O System chassis platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1771-WB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.15 lbs (0.07 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 1771 Single-Slot Height\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C (32 to 140 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive (No backplane load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Count\u003c\/td\u003e\n\u003ctd\u003e12 Screw Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Plating\u003c\/td\u003e\n\u003ctd\u003eGold-Plated Contacts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003e1771 I\/O Digital\/Analog Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eGold-Plated Terminal Contact Integrity \u0026amp; I\/O Isolation\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-WB\u003c\/strong\u003e field wiring arm incorporates 12 gold-plated connection points engineered to minimize contact resistance and protect low-level signal paths against galvanic corrosion in harsh industrial atmospheres. Operating without active electronics, the passive termination block facilitates hot-swappable I\/O module replacement without disconnecting field wiring, preserving circuit continuity across backplane bus slots. High-density screw clamps ensure stable physical retention for 14 AWG to 22 AWG solid or stranded wire conductors under continuous mechanical vibration.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1771-WB wiring arm be removed while the 1771 I\/O rack is powered?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The wiring arm latches directly to the 1771 chassis frame. Unlatching and swinging the wiring arm away mechanically disconnects field wiring from the I\/O module faceplate, allowing module removal while leaving power and field conductors intact.\u003c\/p\u003e\n\u003cp\u003eQ: What wire gauge is supported by the 12 terminal connections on the 1771-WB?\u003c\/p\u003e\n\u003cp\u003eA: The terminal screws accept wire sizes ranging from 14 AWG to 22 AWG solid or stranded copper wire. Torque terminal screws to 7-9 lb-in to ensure proper retention and minimal electrical contact resistance.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1771-WB field wiring arm draw current from the 1771 backplane bus?\u003c\/p\u003e\n\u003cp\u003eA: No. The 1771-WB is a non-powered mechanical connector interface with gold-plated contacts. It draws 0 mA from the backplane bus power supply.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the 1771 chassis pivot pins are free of debris prior to mounting the wiring arm to the lower chassis rail.\u003c\/li\u003e\n\u003cli\u003eStrip field conductor insulation back 0.375 inches (9.5 mm) without nicking or twisting individual copper strands.\u003c\/li\u003e\n\u003cli\u003eInsert conductors fully into the designated 12 terminal locations and tighten retaining screws to specified torque limits.\u003c\/li\u003e\n\u003cli\u003eRoute field wiring bundles vertically down the wiring channel, keeping signal cables separated from AC power lines.\u003c\/li\u003e\n\u003cli\u003ePivot the wiring arm upward until the top retaining latch firmly engages with the installed 1771 I\/O module faceplate.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48749907083454,"sku":"1771-WB","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/1771-WB_20_f2f24dcd-fc47-4d4b-8bf8-b9210c6e9233.png?v=1787018331","url":"https:\/\/www.autooiltech.com\/products\/allen-bradley-1771-wb-wiring-arm","provider":"AutoOilTech Limited","version":"1.0","type":"link"}