{"product_id":"tu848-termination-unit-redundant-mtu-abb","title":"TU848 Termination Unit – Redundant MTU ABB","description":"\u003ch2\u003e\u003cstrong\u003eABB TU848 Module Termination Unit – Redundant ModuleBus MTU\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications – ABB TU848\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand \u0026amp; model:\u003c\/strong\u003e \u003cstrong\u003eABB TU848.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication protocol:\u003c\/strong\u003e ModuleBus (master\/slave not applicable).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine redundancy:\u003c\/strong\u003e Yes – dual ModuleBus lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule redundancy:\u003c\/strong\u003e Yes – supports two TB840\/TB840A modems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHot swap support:\u003c\/strong\u003e No – power off before module replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower input:\u003c\/strong\u003e 24 V d.c. (19.2 – 30 V), dual terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent distribution (ModuleBus):\u003c\/strong\u003e 5 V @ 1.5 A \/ 24 V @ 1.5 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower dissipation:\u003c\/strong\u003e 2.5 W typical.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical keys:\u003c\/strong\u003e 36 different combinations (two keys × six positions).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire sizes accepted:\u003c\/strong\u003e Solid 0.2‑2.5 mm²; stranded 0.2‑2.5 mm² (24‑12 AWG). Recommended torque 0.5 Nm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated insulation voltage:\u003c\/strong\u003e 50 V; dielectric test 500 V a.c.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e 0 to +55 °C (+32 to +131 °F) – approvals rated +5 to +55 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage temperature:\u003c\/strong\u003e -40 to +70 °C (-40 to +158 °F).\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\u003eMax ambient (vertical mount):\u003c\/strong\u003e 40 °C (104 °F); horizontal mount allows 55 °C (131 °F).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIngress protection:\u003c\/strong\u003e IP20 per IEC 60529.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment class:\u003c\/strong\u003e Class I (earth protected) per IEC 60536.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W×H×D):\u003c\/strong\u003e 124 × 186.5 × 47 mm (4.88 × 7.34 × 1.85 in) including latch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.45 kg (0.99 lbs).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is the TU848 compatible with TB840A modems?\u003c\/strong\u003e\u003cbr\u003eA: Yes, the \u003cstrong\u003e3BSE042558R1\u003c\/strong\u003e specifically supports both TB840 and TB840A in redundant modem configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can I hot‑swap modems while power is on?\u003c\/strong\u003e\u003cbr\u003eA: No – the \u003cstrong\u003eTU848\u003c\/strong\u003e does not support hot swap. Always disconnect power before inserting or removing modems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the difference between TU848 and TU849?\u003c\/strong\u003e\u003cbr\u003eA: \u003cstrong\u003eTU848\u003c\/strong\u003e connects modems to redundant I\/O with dual power, while TU849 serves non‑redundant I\/O applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How do I set the cluster address?\u003c\/strong\u003e\u003cbr\u003eA: Use the rotary switch on the front panel – positions 1 to 7. Set the address before system start‑up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What wire gauge works best for power terminals?\u003c\/strong\u003e\u003cbr\u003eA: Use 0.2‑2.5 mm² (24‑12 AWG) solid or stranded copper wire. Torque to 0.5 Nm for secure termination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is this unit certified for hazardous areas?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it carries cULus Hazardous Location Class 1 Zone 2 and ATEX Zone 2 approvals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eContact Information\u003c\/strong\u003e\u003cbr\u003eFor inquiries, please email \u003ca href=\"mailto:sales@nex-auto.com\"\u003esales@nex-auto.com\u003c\/a\u003e or reach us via \u003ca href=\"https:\/\/wa.me\/8615392429628\"\u003e+86 153 9242 9628\u003c\/a\u003e on WhatsApp.\u003cbr\u003ePartner: \u003ca href=\"https:\/\/www.nex-auto.com\/\" target=\"_blank\"\u003eNexAuto Technology Limited\u003c\/a\u003e\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":46831282421921,"sku":"TU848","price":235.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/TU846_c83853ca-7c89-4da4-9d8e-6ac24fa5a350.jpg?v=1786088184","url":"https:\/\/www.autonexcontrol.com\/products\/tu848-termination-unit-redundant-mtu-abb","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}