Description
Are you looking to keep a legacy SLC 500 rack running without rewriting your entire control architecture? The Allen-Bradley 1746-P3 is a 24 VDC input modular power supply designed to mount directly on the left side of any 1746 chassis. In field deployments across municipal water stations and remote oil and gas platforms, system integrators regularly specify this DC-powered unit to run critical control logic directly off backup battery banks, bypassing the risks associated with unreliable utility grids.
Availability, Lead Time, and Warranty
- Condition: New Original (Factory Sealed or New Surplus)
- Availability: In stock (Subject to prior sale)
- Estimated Lead Time: 1–3 business days after order confirmation
- Warranty Period: 12-month comprehensive warranty
- Pricing Notice: The listed cost serves as a baseline market reference. Actual contract pricing fluctuates based on global component availability, regional compliance fees, and order volume. Contact our trade desk for an official, all-inclusive pro forma invoice.
Technical Specifications and Field Parameters
Do not attempt to mix this module with 1746-P1 or 1746-P2 units without verifying your total backplane current draw. The 1746-P3 provides internal overcurrent protection, but exceeding its continuous current ratings will cause the power supply to shut down to protect the processor.
| Technical Parameter | Engineering Value |
| Catalog Number | 1746-P3 |
| Input Voltage Range | 19.2 to 28.8 V DC |
| Nominal Input Voltage | 24 V DC |
| Internal Current Capacity | 3.6 A at 5 V DC; 0.87 A at 24 V DC |
| Inrush Current | Max 20 A |
| Typical Power Consumption | 50 W |
| Fuse Protection | Non-replaceable internal fuse |
| Operating Temperature | 0 to +60 °C (32 to 140 °F) |
Global Trade, Logistics, and Customs Compliance
Moving legacy automation components across borders requires meticulous regulatory compliance to prevent costly border seizures. Because this power supply is an essential component of industrial control systems, it must satisfy specific cross-border documentation standards.
Compliance Notice: The 1746-P3 carries an Export Control Classification Number (ECCN) of EAR99. While it does not require an advanced export license for most commercial destinations, buyers must ensure the end-user documentation specifies civil industrial use to expedite customs clearance.
Incoterms and Seller-Buyer Responsibilities
We default to EXW (Ex Works) or FCA (Free Carrier) terms for industrial electronics to give procurement teams full control over their freight forwarders. Under FCA terms, our warehouse manages export clearance at the origin point, mitigating your exposure to local port authorities. If your corporate policy mandates DAP (Delivered at Place), be prepared to provide your local import broker details immediately upon order placement; the buyer remains responsible for all destination VAT, import duties, and local handling fees.
Customs Documentation to Prevent Delays
Customs clearance delays usually happen because of vague commercial invoices. We eliminate this bottleneck by generating customs paperwork that features precise descriptions.
- HS Code Classification: 85044095 (Static converters, regulated power supplies for automatic data processing units and control systems)
- Country of Origin: United States / Mexico (Verified by factory packing list)
- Required Paperwork: A clean Bill of Lading/AWB, a detailed commercial invoice stating the exact serial numbers, and a Certificate of Conformity (available upon request).
International Shipping and Packaging Standards
How do we ensure a sensitive processing component survives international transit? Standard packaging will not cut it for high-value automation parts.
- Packaging Protocol: Every 1746-P3 is sealed inside an ESD anti-static bag, nestled within a heavy-duty double-walled corrugated outer box filled with high-density foam inserts. This prevents internal component shifting during turbulent air transport.
- Air Freight vs. Ocean Freight: For critical factory-down situations, we utilize express air freight via DHL Express, FedEx Priority, or UPS Worldwide Saver. Shipping transit times average 2–4 business days to North America, Europe, and Southeast Asia.
Trade Finance and Payment Securitization
For international procurement orders exceeding $10,000 USD, we accept an irrevocable Letter of Credit (L/C) at sight, which must be confirmed by a tier-one international bank. For standard inventory replacements under $10,000 USD, transactions are processed via Telegraphic Transfer (T/T) or secure corporate escrow accounts. Production lines cannot wait for extended verification loops, so clearing payment within 24 hours ensures immediate dispatch to the logistics dock.
Installation Notes for Automation Engineers
Watch your wire routing on the input terminal block. Well, technically it tolerates an input range down to 19.2 VDC, but if your 24V battery bank drops low under heavy motor-start loads, the power supply will execute a hard shutdown. In my experience, a dedicated, isolated DC-to-DC converter should feed the 1746-P3 directly if it shares a bus with inductive field devices. Connect your ground wire to the third terminal screw from the top using a heavy-gauge copper strap to prevent common-mode electrical noise from interrupting your SLC backplane communication.
