ABB LXN1604-6 3BHL000986P7000 24V DC DIN Rail Industrial Power Unit Full Product Introduction

(Word Count: ~995, full electrical specs, DIN rail mounting design, integrated CEX-bus switch, multi-protection, industrial strengths & global stock supply) ABB LXN1604-6 with part number 3BHL000986P7000 is a compact DIN rail mounted 24V DC industrial power unit exclusively engineered for ABB Ability™ System 800xA DCS automation platforms. This all-in-one unit integrates a high-capacity AC-DC power converter and proprietary CEX-bus Gigabit Ethernet switch into a single DIN rail housing, delivering stabilized 24.7V DC regulated power and hard real-time control communication for AC800M redundant controllers, S800 remote I/O racks, process transmitters, safety relays and variable frequency drives. Standard TS35 DIN rail snap-fit mounting enables quick, space-saving installation inside standard industrial control cabinets, eliminating the need to install separate standalone power supplies and managed switches which occupy excessive rail space. We maintain consistent spot inventory of factory-sealed brand-new original modules, complete pre-shipment electrical and communication aging testing, same-day packing and door-to-door global shipping for new cabinet assembly, production line automation upgrade, and emergency spare part replacement projects across power, petrochemical, metallurgy, pharmaceutical and water treatment industries worldwide.

Complete Technical Specifications Focused on 24V DC DIN Rail Power Performance

1. Core AC/DC Input & 24V DC Output Electrical Parameters

This DIN rail power unit adopts universal dual wide-range input to adapt all global industrial mains standards, fully eliminating the need for auxiliary voltage transformers in cross-border automation projects:

• AC Input: 85–264VAC, 47–63Hz wide frequency band, compatible with 110V and 220V single-phase industrial power grids
• DC Backup Input: 90–350VDC, supports seamless switchover with UPS and generator backup power during grid voltage dips or temporary blackouts
• Rated DC Output: Stabilized 24.7V DC (standard 24V industrial control level), 20A continuous rated current, total 500W full power capacity
• Conversion Topology: LLC resonant high-efficiency circuit, energy efficiency exceeds 90% under full load, effectively cutting heat accumulation in sealed, poorly ventilated DIN rail cabinets
• Output Ripple & Noise: Strictly controlled below 100mV peak-to-peak, preventing signal flicker and measurement drift of precision pressure transmitters, vision sensors and analytical instruments powered by the 24V DC bus
• Isolation Rating: 3kV AC reinforced insulation between input power circuit and 24V DC output / CEX-bus signal circuits, suppressing high-frequency harmonic interference generated by inverters, servo motors and welding equipment
• Industrial MTBF: Over 50,000 hours under continuous full-load DIN rail operation, supporting 7×24-hour unattended industrial production without frequent maintenance downtime

The 24V DC output bus is designed to simultaneously supply power to all core hardware inside a single DCS cabinet, including dual redundant AC800M CPUs, multi-channel S800 I/O modules, field 4–20mA transmitters, safety interlock relays, and the internal integrated CEX-bus switching circuit, removing the requirement for multiple distributed small power supplies on the DIN rail.

2. DIN Rail Mechanical & Environmental Adaptation Specs

The module is fully optimized for standard TS35 DIN rail mounting, the universal installation standard for all global industrial control cabinets:

• Overall Dimensions: 194mm depth × 113.6mm height, slim narrow body to minimize horizontal DIN rail occupation
• Installation Method: Snap-on DIN rail clip structure, one-click locking and quick disassembly without additional mounting brackets or screws, greatly speeding up cabinet assembly and on-site maintenance replacement
• Net Weight: Approximately 0.5kg, lightweight design avoids rail deformation even when multiple modules are densely arranged on the same DIN rail
• PCB Surface Treatment: Full three-proof conformal coating, resisting dust, moisture, oil mist and weak corrosive gas in chemical, mining and metallurgical workshops; passes IEC 60068 anti-vibration and shock testing to adapt continuous vibration from compressors, rolling mills and conveyor lines
• Operating Temperature: Continuous working range -25℃ ~ +70℃, stable 24V DC output performance maintained even in high-temperature closed DIN rail cabinets; storage temperature -40℃ ~ +85℃ for long-term spare part warehouse storage and cross-region logistics transportation
• Protection Grade: IP20 for indoor cabinet deployment; Global Certifications: CE, UL 5085, RoHS, SIL2 functional safety qualification, compliant with safety interlock control loop standards for high-risk process industries
• Hot-Swap Support: DIN rail plug-and-play hot-swap design; single module replacement will not cut off the entire cabinet’s main power supply, keeping other 24V DC powered field equipment running normally during maintenance to avoid full production line shutdown

3. Integrated CEX-bus Ethernet Switch Function for System 800xA

Beyond stable 24V DC DIN rail power delivery, the built-in ABB proprietary CEX-bus switching chip serves as the real-time communication backbone for System 800xA control networks:

• Multiple galvanically isolated 10/100/1000Mbps Gigabit RJ45 ports, total non-blocking switching capacity 12Gbps, packet forwarding rate 8.9Mpps
• Deterministic sub-millisecond low-jitter CEX-bus cyclic data transmission, realizing loss-free process variable mirroring between primary and backup redundant AC800M controllers
• RSTP rapid spanning tree redundancy protocol, network fault recovery within 20ms to guarantee bumpless master-standby controller switchover without safety interlock trips
• Compatible industrial protocols: Modbus TCP, PROFINET RT, MMS control network protocol, enabling bidirectional data exchange between DCS workstations, ABB ACS drives and on-site analytical instruments
• Embedded SNMP diagnostic channel: Real-time monitoring of 24V DC output load rate, rail temperature, Ethernet port packet loss and CEX-bus cycle deviation, all timestamp fault logs uploaded to central HMI for maintenance traceability

4. Full Multi-Layer Hardware Protection for DIN Rail 24V DC Power Loop

A complete set of hardware fast protection circuits protects the DIN rail 24V DC bus and all downstream expensive automation hardware from on-site electrical faults:

1. Over Voltage Protection (OVP): Instantly cuts off 24V DC output within microseconds once input surge or output overvoltage occurs, preventing permanent breakdown of controller mainboards and Ethernet transceiver chips
2. Overload & Over Current Protection (OCP): Supports stable long-term operation under 120% rated load to withstand instantaneous startup surge of solenoid valves and servo drives; automatic current limiting and delayed shutdown under sustained heavy overload
3. Auto-Recovery Short Circuit Protection (SCP): Rapidly suppresses huge short-circuit current caused by wiring misconnection or cable insulation aging; 24V DC power resumes automatically after fault elimination without manual cabinet power cycle
4. Over Temperature Thermal Lockout: Real-time internal temperature monitoring; shuts down 24V DC output to avoid PCB carbonization when heat accumulates on densely packed DIN rail layouts with poor ventilation
5. Multi-Stage EMC Surge Filter: Absorbs lightning surge and grid pulse interference, adapting remote oilfield, mining and water pump stations with unstable power infrastructure

Core Advantages of DIN Rail 24V DC Integrated Power Unit

First, DIN rail all-in-one integration drastically saves cabinet rail space and reduces system hidden faults. Traditional DCS cabinet schemes require separate DIN rail power supply and independent managed switch, occupying double TS35 rail length and increasing wiring terminals and loose contact risks that easily cause 24V DC power cut-off or communication disconnection. LXN1604-6 merges 500W 24V DC power conversion and CEX-bus high-speed switching into one single DIN rail module, simplifying cabinet wiring layout, lowering assembly labor costs, and cutting the variety of spare parts maintenance teams need to stock for multiple System 800xA control cabinets. Parallel module connection supports N+1 redundant 24V DC power deployment for large multi-cabinet control networks to eliminate single-point power failure risks.
Second, factory-calibrated 24V DC stable output ensures consistent precision of industrial process control. Voltage fluctuation and high ripple on the 24V DIN rail bus will lead to robot positioning offset, bioreactor parameter drift and DCS interlock misoperation; this unit’s adaptive wide-input conversion circuit maintains fixed 24.7V DC output voltage under any valid industrial mains voltage, guaranteeing long-term stable operation of precision process measurement and safety control hardware. Engineers complete one-click 24V DC power parameter and redundant network topology configuration via Control Builder M software without secondary program debugging, greatly shortening project on-site debugging and fault replacement recovery time.
Third, abundant original spot stock and global logistics solve urgent on-site maintenance demands. Refurbished or counterfeit DIN rail power modules often use inferior conversion chips and simplified protection circuits, prone to frequent over-temperature trips and unstable 24V DC output under long-term full-load operation. All LXN1604-6 modules we supply are unmodified factory genuine products with intact protection and communication circuits, each covered by a 12-month global quality warranty. We maintain year-round large spot inventory, arrange shipment within the same working day after order confirmation, cooperate with professional industrial freight channels to deliver fast to Europe, Southeast Asia, the Middle East, North America and other major industrial regions. Our professional automation technical team provides free remote guidance for DIN rail cabinet layout design, 24V DC load calculation, redundant power deployment and power supply fault diagnosis after sales service.

Typical Industrial Application Scenarios for DIN Rail 24V DC Power Unit

As the standardized core DIN rail mounted 24V DC power and communication unit of ABB System 800xA industrial control network, ABB LXN1604-6 3BHL000986P7000 is widely applied in all high-reliability process automation scenarios with standard TS35 DIN rail cabinets: thermal power plant boiler and turbine redundant DCS control panels; petrochemical refinery reactor and distillation unit high-availability control racks; metallurgical hot/cold rolling mill multi-motor synchronous drive integrated DIN rail cabinets; pharmaceutical sterile filling and bioreactor batch production line compact DCS panels; municipal large water treatment plant pump and fan automation control boxes; and skid-mounted compact control frames for offshore oil & gas wellhead monitoring systems. Whether for new control cabinet manufacturing, old automation system 24V DC power and communication loop upgrading, or emergency replacement of damaged DIN rail power units leading to full system communication interruption, original ABB LXN1604-6 DIN rail 24V DC industrial power unit delivers stable, efficient and fault-tolerant power and real-time CEX-bus communication support for ABB System 800xA industrial control systems.