{"product_id":"emerson-deltav-kj3241x1-ea1-redundant-serial-interface-terminal-block","title":"Emerson DeltaV KJ3241X1-EA1 Redundant Serial Interface Terminal Block","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eEmerson KJ3241X1-EA1\u003c\/strong\u003e is a \u003cstrong\u003eRedundant Serial Interface Terminal Block\u003c\/strong\u003e for DeltaV™ distributed control systems. It supports RS-232 and RS-485 communication protocols with dual-channel redundancy, ensuring uninterrupted serial data flow in critical industrial applications.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Emerson\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e KJ3241X1-EA1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Redundant Serial Interface Terminal Block\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication Protocol:\u003c\/strong\u003e RS-232 \/ RS-485\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 35 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Current:\u003c\/strong\u003e 1 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.45 – 1.0 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEnvironmental \u0026amp; Safety Ratings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e −40 °C to +70 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShock:\u003c\/strong\u003e 10 g, ½ sine wave for 11 ms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration:\u003c\/strong\u003e 1 mm p-p (2–13.2 Hz); 0.7 g (13.2–150 Hz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelative Humidity:\u003c\/strong\u003e 5 % – 95 % non-condensing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirborne Contaminants:\u003c\/strong\u003e ISA-S71.04-1985 Class G3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP Rating:\u003c\/strong\u003e IP20\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDual-channel redundancy with automatic failover\u003c\/li\u003e\n\u003cli\u003eSupports both RS-232 and RS-485 serial standards\u003c\/li\u003e\n\u003cli\u003eBuilt-in diagnostics monitor communication health and fault status\u003c\/li\u003e\n\u003cli\u003eModular design enables quick replacement and minimal downtime\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does the redundant design protect against?\u003c\/strong\u003e\u003cbr\u003eA: If the primary serial channel fails, the backup channel assumes communication instantly, preventing data loss or control interruption.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this compatible with Modbus RTU?\u003c\/strong\u003e\u003cbr\u003eA: Yes, RS-485 mode supports Modbus RTU and similar master-slave protocols common in process automation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I hot-swap this terminal block?\u003c\/strong\u003e\u003cbr\u003eA: Field power and serial cabling must be de-energized before removal or insertion.\u003c\/p\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eSet the rotary key position to match the serial interface card.\u003c\/li\u003e\n\u003cli\u003eConnect primary and backup serial cables to the redundant terminals.\u003c\/li\u003e\n\u003cli\u003eEnsure shielded twisted-pair cabling is used for RS-485 runs.\u003c\/li\u003e\n\u003cli\u003eVerify termination resistors are installed at the end of long RS-485 networks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eChoose KJ3241X1-EA1 for serial device integration where communication uptime is critical.\u003c\/li\u003e\n\u003cli\u003eVerify your serial interface card requires the EA1 terminal block key position.\u003c\/li\u003e\n\u003cli\u003eFor long-distance RS-485 networks, confirm baud rate vs. cable length compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Emerson","offers":[{"title":"Default Title","offer_id":53851887501496,"sku":"KJ3241X1-EA1","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/KJ3241X1-EA1.png?v=1785735036","url":"https:\/\/www.globalpetroparts.com\/products\/emerson-deltav-kj3241x1-ea1-redundant-serial-interface-terminal-block","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}