{"product_id":"allen-bradley-1771-wc-wiring-arm","title":"Allen-Bradley 1771-WC Wiring Arm","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-WC\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1771-WC\u003c\/strong\u003e Wiring Arm, operates as a dedicated hardware component for field signal termination and cable interface within Allen-Bradley PLC-5 systems. It provides direct physical connection between plant field wiring and 1771 TTL low-current I\/O modules, enabling rapid module swapping without disturbing field conductors.\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-WC\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\u003e0.25 lbs (0.11 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e4.5 x 12.4 x 6.3 in (114 x 315 x 160 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive (No external power required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eConformal Coated Wiring Arm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Number of I\/O\u003c\/td\u003e\n\u003ctd\u003e8 I\/O points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Terminals\u003c\/td\u003e\n\u003ctd\u003e10 Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Plating\u003c\/td\u003e\n\u003ctd\u003eGold-plated terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScrew Torque\u003c\/td\u003e\n\u003ctd\u003e7 to 9 lb-in (0.8 to 1.0 Nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Wire Size\u003c\/td\u003e\n\u003ctd\u003eUp to AWG 14 (spade lugged or clamped)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication Velocity \u0026amp; I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe 1771-WC wiring arm maintains signal integrity across high-density I\/O arrays without introducing resistance or signal propagation delays to the module backplane. Gold-plated contact points prevent terminal oxidation on low-voltage, low-current TTL switching circuits, preserving digital edge detection and timing consistency. Designed for maximum physical durability, its conformally coated thermoplastic body insulates 10 independent terminal connections against corrosive airborne contaminants and harsh industrial environment degradation.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1771-WC wiring arm require separate DC power to drive its internal connections?\u003c\/p\u003e\n\u003cp\u003eA: No, the 1771-WC is a completely passive mechanical and electrical interface unit requiring no external power input.\u003c\/p\u003e\n\u003cp\u003eQ: What screw torque specification should be applied to prevent damage to field terminal connections?\u003c\/p\u003e\n\u003cp\u003eA: Terminal screws on the 1771-WC must be tightened to a torque rating between 7 and 9 lb-in (0.8 to 1.0 Nm).\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Termination:\u003c\/strong\u003e Connect field wiring up to AWG 14 using spade lugs or direct wire clamping onto the 10 gold-plated terminal screws. Torque screws to 7-9 lb-in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArm Installation:\u003c\/strong\u003e Swing the 1771-WC wiring arm onto the bottom pivot pin of the assigned 1771 I\/O slot and push firmly until it latches securely onto the front of the I\/O module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Replacement:\u003c\/strong\u003e To replace an I\/O module, unlatch and pivot the 1771-WC arm forward without disconnecting any field wiring, keeping field circuits intact while exchanging hardware.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52678046843160,"sku":"1771-WC","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/1771-WC_Cocoai_d2149fe5-0e10-4b08-8c49-1ace1e42b5c9.jpg?v=1789373786","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-1771-wc-wiring-arm","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}