Genuine Allen-Bradley 1746-NR4 SLC 4-Point Resistance Input Module | SLC 500 Series – Verified Source
The Allen-Bradley 1746-NR4 is a critical analog input module within Rockwell Automation’s SLC 500 programmable controller platform — one of the most widely deployed control architectures in global manufacturing, oil & gas, water treatment, and discrete automation. As demand for legacy SLC 500 components continues to outpace new production, the 1746-NR4 has become a high-value target for counterfeit and substandard substitutes. Purchasing from unverified sources risks firmware incompatibility, inaccurate resistance readings, premature hardware failure, and — most critically — unplanned production downtime.
At Konmask, every 1746-NR4 unit is sourced through verified industrial supply channels and subjected to a documented multi-step inspection protocol before shipment. We supply only genuine, authentic Allen-Bradley hardware — never refurbished-as-new, never remarked, never cloned. Our commitment to verified sourcing is backed by traceable documentation, and we stand behind every unit we ship.
Technical Specifications
- Part Number: 1746-NR4
- Series: Allen-Bradley SLC 500
- Module Type: Analog Resistance / RTD Input
- Number of Input Channels: 4 (differential)
- Input Signal Types: RTD (Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Cu10), Resistance (0–3000 Ω)
- Resolution: 16-bit (including sign bit)
- Accuracy: ±0.1% of full scale at 25°C
- Temperature Range (Operating): 0°C to 60°C (32°F to 140°F)
- Temperature Range (Storage): -40°C to 85°C
- Backplane Current Draw: 150 mA @ 5 VDC; 0 mA @ 24 VDC
- Power Dissipation: 0.75 W (max)
- Isolation: 250 VAC continuous channel-to-backplane
- Wiring: 2-wire, 3-wire, or 4-wire RTD configurations
- Enclosure Rating: Open-style (IP20)
- Certifications: UL Listed, CE Marked, CSA Certified
- Dimensions (H × W × D): 111.8 mm × 30.5 mm × 87.4 mm
- Weight: Approx. 300 g
- Compatible Chassis: 1746-A4, 1746-A7, 1746-A10, 1746-A13
Specifications verified against Allen-Bradley / Rockwell Automation official documentation (Publication 1746-UM009).
Our 4-Step Quality Verification Process
- Step 1 — Source Authentication: All units are procured exclusively from traceable industrial distributors or decommissioned OEM facilities. We verify lot codes, date codes, and manufacturer markings against Rockwell Automation’s published part identification standards. No grey-market or unverified broker stock is accepted.
- Step 2 — Physical Inspection: Each module undergoes a detailed visual inspection: PCB condition, connector integrity, label authenticity, housing markings, and seal verification. Any unit showing signs of remarking, repackaging, or physical tampering is immediately rejected.
- Step 3 — Functional Bench Testing: Modules are powered up in a compatible SLC 500 chassis and tested across all 4 input channels using calibrated RTD simulators. We verify channel accuracy, noise immunity, and correct firmware response per Rockwell’s published specifications.
- Step 4 — Documentation Package: Every shipment is accompanied by available documentation: Certificate of Conformance (COC), Functional Test Report, high-resolution packing photos, Country of Origin (COO) Declaration, and — upon request — third-party inspection reports. Full traceability from source to delivery.
Key Features & Benefits
- Universal RTD Compatibility: Supports Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, and Cu10 sensor types — covering the vast majority of industrial temperature measurement applications per IEC 60751 and ASTM E1137 standards.
- High-Resolution 16-Bit Conversion: Delivers precise analog-to-digital conversion for demanding process control applications where measurement accuracy directly impacts product quality or safety.
- Flexible Wiring Configurations: Supports 2-wire, 3-wire, and 4-wire RTD connections, enabling drop-in replacement across existing installations without rewiring.
- Robust Channel Isolation: 250 VAC continuous channel-to-backplane isolation protects the SLC 500 system from ground loops and transient voltage events, compliant with IEC 61131-2 programmable controller safety requirements.
- Seamless SLC 500 Integration: Fully compatible with SLC 5/01 through SLC 5/05 processors and all standard 1746-series chassis — no firmware updates or configuration changes required for direct replacement.
- Long-Term Availability Assurance: Konmask maintains strategic stock of legacy SLC 500 modules to support customers through extended maintenance cycles and end-of-life production scenarios.
Typical Applications
- Oil & Gas Processing: Pipeline temperature monitoring and wellhead RTD signal acquisition in SLC 500-controlled SCADA systems.
- Food & Beverage Manufacturing: Pasteurization and CIP (Clean-in-Place) process temperature control requiring high-accuracy RTD inputs.
- Pharmaceutical Production: Validated temperature measurement in autoclave, fermentation, and environmental monitoring systems under FDA 21 CFR Part 11 compliance frameworks.
- Water & Wastewater Treatment: Pump station and aeration basin temperature monitoring integrated into legacy SLC 500 SCADA architectures.
- Plastics & Rubber Extrusion: Barrel zone temperature control using Pt100 RTDs in extruder and injection molding machine PLCs.
- HVAC & Building Automation: Chiller plant and air handling unit temperature monitoring in facilities running legacy Allen-Bradley control systems.
Compatible System Components
- SLC 500 Chassis: 1746-A4, 1746-A7, 1746-A10, 1746-A13
- SLC 5/01 Processor: 1747-L511, 1747-L514
- SLC 5/02 Processor: 1747-L524
- SLC 5/03 Processor: 1747-L531, 1747-L532, 1747-L533
- SLC 5/04 Processor: 1747-L541, 1747-L542, 1747-L543
- SLC 5/05 Processor: 1747-L551, 1747-L552, 1747-L553
- Power Supplies: 1746-P1, 1746-P2, 1746-P3, 1746-P4, 1746-P7
- Programming Software: RSLogix 500 (v8.0+), Studio 5000 Logix Designer (legacy mode)
- Communication Modules: 1747-SDN (DeviceNet), 1747-SN (Remote I/O), 1747-KE (DH-485)
Global Sourcing & Shipping Capabilities
- Primary Service Regions: China (Mainland), Southeast Asia (Vietnam, Thailand, Indonesia, Malaysia), Middle East (UAE, Saudi Arabia), Europe (Germany, Poland, Netherlands), North America (USA, Canada, Mexico), and Australia.
- Export Packaging Standard: Anti-static ESD bag → foam-lined inner box → double-wall corrugated outer carton. Fragile and shock-sensitive labeling applied. Suitable for air freight and sea freight.
- Shipping Options: DHL Express (2–5 days), FedEx International Priority, UPS Worldwide, sea freight (LCL/FCL) for bulk orders, and China Post registered airmail for budget-sensitive shipments.
- Lead Time: In-stock units ship within 1–3 business days of payment confirmation. Pre-order or sourcing requests: 7–15 business days estimated.
- Customs & Export Compliance: All shipments include commercial invoice, packing list, and COO declaration. HS Code: 8537.10 (programmable controllers / electronic control modules). Export licensing assessed per destination country regulations.
Certifications & Compliance Statement
- ✅ UL Listed (UL 508 — Industrial Control Equipment)
- ✅ CE Marked (EMC Directive 2014/30/EU; Low Voltage Directive 2014/35/EU)
- ✅ CSA Certified (Canadian Standards Association)
- ✅ RoHS Compliant (Directive 2011/65/EU)
- ✅ ATEX / IECEx: Not rated for hazardous area use in standard configuration
Konmask Quality Commitment: We do not sell counterfeit, cloned, or remarked hardware. Every unit we ship is inspected, documented, and traceable. If any unit fails to perform to published Allen-Bradley specifications within the warranty period, we will replace it or issue a full refund — no questions asked. Our reputation is built on the integrity of every component we supply.
How to Order
- Step 1 — Add to Cart & Checkout: Select your required quantity and proceed through our secure checkout. We accept T/T bank transfer, PayPal, credit card, and Western Union for international orders.
- Step 2 — Order Confirmation & Documentation: Within 24 hours of payment, you will receive an order confirmation with estimated ship date, tracking number (once dispatched), and your documentation package (COC, test report, packing photos) via email.
- Step 3 — Shipment & After-Sales Support: Your order ships with full tracking. Our technical support team is available post-delivery for installation guidance, compatibility questions, or warranty claims. Contact us at support@konmask.com or +0086 19859288691.
Sample & Test Report Policy: Pre-shipment functional test reports are available upon request at no additional charge. Physical samples for evaluation are available for qualified buyers — contact us to discuss terms.
Authenticity & Trust FAQ
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Q: How can I verify the authenticity of the 1746-NR4 I receive from Konmask?
A: Every unit ships with a Certificate of Conformance (COC) and functional test report. Physical markings, date codes, and lot numbers can be cross-referenced against Rockwell Automation’s published part identification guides. We also provide high-resolution pre-shipment photos of the actual unit upon request before payment. -
Q: What is Konmask’s warranty policy for the 1746-NR4?
A: We offer a 12-month warranty from the date of shipment against manufacturing defects and functional failure under normal operating conditions. Warranty claims are processed within 5 business days. We cover replacement shipping costs for confirmed defective units. -
Q: Can you provide a third-party inspection or test report before I place a large order?
A: Yes. For orders above a defined quantity threshold, we can arrange third-party inspection by SGS, Bureau Veritas, or a buyer-nominated inspection agency prior to shipment. Functional test reports generated on our in-house SLC 500 test bench are available for all orders at no charge.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
