Genuine Allen-Bradley 1756-PA72/B AC Power Supply | ControlLogix Series – Verified Source
The Allen-Bradley 1756-PA72/B is a high-reliability AC input power supply designed for the ControlLogix chassis platform. Sourced through verified industrial distribution channels, every unit offered by Konmask.com undergoes multi-point authentication before shipment — giving procurement engineers and system integrators the confidence to specify with certainty.
Technical Specifications
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Part Number | 1756-PA72/B |
| Series | ControlLogix |
| Input Voltage | 85–265 V AC, 47–63 Hz (universal range) |
| Output Voltage | 1.2 V DC, 3.3 V DC, 5 V DC, 24 V DC (backplane) |
| Output Power | 72 W total backplane power |
| Chassis Compatibility | 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17 |
| 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 |
| Dimensions (H × W × D) | Occupies 1 chassis slot |
| Weight | 200 g (approx.) |
| Revision | /B |
| Certifications | UL, CE, CSA, RCM |
Our 4-Step Quality Verification Process
Every 1756-PA72/B unit shipped from Konmask.com passes through a documented four-stage inspection protocol:
- Source Authentication — Units are procured exclusively from authorised distributors, OEM surplus channels, or factory-sealed stock. Chain-of-custody documentation is retained on file.
- Physical Inspection — Label integrity, revision marking (/B), housing condition, connector pin alignment, and serial number format are verified against Rockwell Automation reference standards.
- Functional Bench Test — Where applicable, power-on output voltage rails are measured and logged. Units that fail tolerance thresholds are quarantined and not listed for sale.
- Packaging & Documentation Review — Original packaging, firmware revision stickers, and any included documentation are checked for completeness before dispatch.
Key Features & Benefits
- Universal AC input range (85–265 V AC) eliminates the need for external voltage selection — suitable for global deployment
- 72 W backplane output supports fully populated ControlLogix chassis configurations
- Hot-swap capable — replace without powering down the entire chassis (when redundant PSU is installed)
- Integrated diagnostics with status LED indicators for rapid fault identification
- Conformal-coated PCB for enhanced resistance to humidity and airborne contaminants
- Revision /B incorporates Rockwell’s updated capacitor specification for extended MTBF
Typical Applications
- Discrete Manufacturing — Automotive assembly lines, press control, and robotic cell coordination requiring stable 24 V DC backplane power
- Process Industries — Oil & gas wellhead control, refinery DCS integration, and chemical batch processing where continuous uptime is critical
- Power Generation & Utilities — Substation automation, turbine governor control, and grid-tie protection relay systems
- Water & Wastewater — SCADA-connected pump station control and treatment plant PLC racks
- Mining & Minerals — Conveyor drive control, crusher automation, and ventilation management systems
- Building Automation — Large-scale HVAC, chiller plant, and BMS integration using ControlLogix as the primary controller
Compatible System Components
| Chassis | 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17 |
| Controllers | 1756-L61, 1756-L62, 1756-L63, 1756-L71, 1756-L72, 1756-L73, 1756-L74, 1756-L75 |
| Communication Modules | 1756-EN2T, 1756-EN2TR, 1756-ENBT, 1756-DNB, 1756-CN2 |
| I/O Modules | 1756-IB16, 1756-OB16E, 1756-IF8, 1756-OF8 |
| Redundant PSU Companion | 1756-PA72/B (second unit for 1756-PSCA2 redundancy chassis adapter) |
| Power Supply Adapter | 1756-PSCA2 (for N+1 redundancy configuration) |
Global Sourcing & Shipping Capabilities
- Stock Location: Inventory held in China with consolidation support for international orders
- Lead Time: In-stock units typically dispatched within 1–3 business days of order confirmation
- Export Compliance: EAR99 classification; no export licence required for most destinations — please confirm for embargoed regions
- Shipping Methods: DHL Express, FedEx International Priority, UPS Worldwide, and sea freight consolidation available for bulk orders
- Customs Documentation: Commercial invoice, packing list, and certificate of origin provided as standard; Form E (ASEAN) available on request
- Minimum Order: Single unit accepted; volume pricing available for orders of 5+ units
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 — C22.2 No. 142
- RCM Mark — Compliant for Australian and New Zealand markets
- RoHS Compliant — Directive 2011/65/EU (Restriction of Hazardous Substances)
- REACH Compliant — No SVHC substances above threshold in supplied units
Konmask.com does not manufacture, modify, or relabel any Rockwell Automation product. All units are supplied as-manufactured by Allen-Bradley.
How to Order
- Confirm Part Number & Revision — Verify your existing chassis accepts /B revision (backward compatible with /A in all standard configurations).
- Request a Quote — Contact support@konmask.com or call +0086 19859288691 with your required quantity and delivery timeline.
- Receive Proforma Invoice — We issue a PI within 1 business day including unit price, shipping cost, and estimated delivery date.
- Confirm Payment — T/T (bank transfer), PayPal, and trade assurance options available.
- Dispatch & Tracking — Tracking number provided within 24 hours of shipment. Real-time updates via carrier portal.
Authenticity & Trust FAQ
Q: How do I know the unit is genuine Allen-Bradley and not a counterfeit?
A: Each unit is inspected against Rockwell Automation’s published physical authentication markers. We retain sourcing documentation and can provide it upon request for audited procurement processes.
Q: Is the /B revision compatible with my existing /A power supply slot?
A: Yes. The /B revision is a drop-in replacement for /A in all standard 1756 chassis. No firmware or configuration changes are required.
Q: Do you offer a warranty?
A: All units carry a 12-month Konmask.com operational warranty covering defects in materials and workmanship. DOA units are replaced at no cost within 7 days of receipt.
Q: Can you supply a test report or inspection certificate?
A: Functional test logs are available for units that underwent bench testing. Please request this at the time of order.
Q: What if I need multiple units for a plant-wide upgrade?
A: Volume pricing and consolidated shipping are available. Contact us directly for a project-specific quotation.
Q: Do you accept returns?
A: Yes. Unused, unopened units may be returned within 30 days. Units must be in original condition with all packaging intact.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
