Allen-Bradley 1783-US05T — 5-Port Unmanaged Ethernet Switch | Stratix 2000 Platform
Engineering Background
The 1783-US05T is part of Rockwell Automation’s Stratix 2000 series — a purpose-built line of unmanaged Ethernet switches designed for deterministic, low-latency communication in industrial control environments. Unlike commercial-grade switches, the Stratix 2000 family is engineered to withstand the electrical noise, temperature extremes, and continuous-duty cycles inherent to factory floors, process plants, and machine control cabinets.
Product Positioning
The 1783-US05T serves as the entry-level workhorse for small-node EtherNet/IP device networks — ideal for connecting PLCs, drives, HMIs, and I/O blocks where managed features are unnecessary overhead. Its DIN-rail form factor and 24 VDC power input make it a natural fit for panel integration alongside CompactLogix and MicroLogix controllers.
Complete Technical Specifications
- Part Number: 1783-US05T
- Series: Stratix 2000 Unmanaged Ethernet Switch
- Manufacturer: Allen-Bradley / Rockwell Automation
- Number of Ports: 5 × RJ45 (10/100BASE-TX)
- Port Speed: 10/100 Mbps, auto-negotiation, auto-MDIX
- Switching Capacity: 1 Gbps (non-blocking)
- Protocol Support: EtherNet/IP, Modbus TCP, standard IEEE 802.3
- Power Supply Input: 24 VDC (18–32 VDC range), redundant power input terminals
- Power Consumption: ≤ 3.5 W typical
- Operating Temperature: 0 °C to +60 °C (32 °F to 140 °F)
- Storage Temperature: −40 °C to +85 °C
- Relative Humidity: 5–95% non-condensing
- Mounting: 35 mm DIN rail
- Enclosure Rating: IP20
- Dimensions (H × W × D): 99 × 75 × 27 mm
- Weight: 640 g (with packaging)
- Certifications: UL Listed, CE, cUL, RCM, EAC
- MTBF: > 1,000,000 hours
- Catalog Number: 1783-US05T
Proven Application Environments
- EtherNet/IP device-level networks connecting CompactLogix / MicroLogix PLCs to remote I/O
- Machine control panels requiring compact, DIN-rail Ethernet switching
- Drive networks linking PowerFlex VFDs to a supervisory controller
- HMI and SCADA node connectivity in discrete manufacturing cells
- Retrofit and modernization projects replacing legacy DeviceNet or ControlNet segments
- OEM machine builders standardizing on Rockwell Automation architecture
Engineering Advantages
- Zero-configuration deployment: Plug-and-play operation eliminates commissioning time for simple topologies.
- Auto-MDIX on all ports: Eliminates crossover cable requirements, reducing wiring errors.
- Wide DC input range (18–32 VDC): Compatible with standard 24 VDC panel power supplies without additional regulation.
- Redundant power terminals: Supports dual-feed wiring for improved panel uptime.
- Industrial-grade MTBF: Designed for 24/7 continuous operation in harsh environments.
- Compact DIN-rail footprint: Minimizes panel real estate — critical in space-constrained enclosures.
- Rockwell ecosystem native: Fully validated for use within Studio 5000 / RSLogix 5000 EtherNet/IP architectures.
System Architecture & Signal Flow
In a typical EtherNet/IP star topology, the 1783-US05T acts as the local aggregation point within a machine cell. The upstream port connects to a managed switch (e.g., Stratix 5700) or directly to the controller’s embedded Ethernet port. The remaining four downstream ports serve end devices — I/O adapters, drives, safety controllers, or HMI panels. All ports operate at wire speed with store-and-forward switching, ensuring deterministic frame delivery required by CIP (Common Industrial Protocol) motion and I/O messaging.
Recommended topology: Star (single-level) | Max nodes per switch: 4 downstream devices | Cable standard: Cat5e or Cat6 shielded (STP) recommended in high-EMI environments.
Sourcing & Quality Verification
- Source: Verified surplus and authorized distribution channels — no counterfeit risk.
- Inspection: Each unit undergoes visual inspection, label verification, and power-on functional test prior to shipment.
- Condition: New surplus or factory-refurbished; condition specified at time of quotation.
- Traceability: Lot documentation and date codes available upon request for regulated industries.
- Warranty: 12-month Konmask operational warranty covering defects in materials and workmanship.
Procurement Process
- Step 1 — Confirm availability: Contact support@konmask.com or call +0086 19859288691 to verify current stock and lead time.
- Step 2 — Request quotation: Provide quantity, required condition (new/refurbished), and delivery destination for a formal quotation within 24 hours.
- Step 3 — Place order: Purchase directly via Konmask.com checkout or via PO for approved B2B accounts.
- Step 4 — Shipment & documentation: Units ship with packing list, inspection report, and tracking. Export documentation (CO, commercial invoice) available for international orders.
- Step 5 — Technical support: Post-delivery commissioning support available via email or video call.
Technical FAQ
Q: Can the 1783-US05T be configured via software?
A: No. As an unmanaged switch, it requires no configuration — all ports operate automatically. For VLAN, QoS, or IGMP snooping, consider the managed Stratix 5700 series.
Q: Is it compatible with non-Rockwell EtherNet/IP devices?
A: Yes. The switch is protocol-agnostic at the physical layer and supports any IEEE 802.3 compliant device. EtherNet/IP compatibility is determined by the end devices, not the switch.
Q: What cable type is recommended?
A: Cat5e minimum; Cat6 STP preferred in environments with significant EMI (near VFDs, servo drives, or welding equipment).
Q: Can it operate on 12 VDC or 48 VDC?
A: No. The rated input is 18–32 VDC. Operation outside this range may damage the unit and voids warranty.
Q: Is a DIN-rail clip included?
A: Yes, the DIN-rail mounting clip is factory-installed on the unit.
Q: What is the lead time for bulk orders?
A: Typically 3–7 business days for stocked quantities. Contact us for volume pricing and expedited options.
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