1756-PB72 Allen-Bradley ControlLogix 24VDC Standard Power Supply Unit
Manufacturer: Allen-Bradley
Product No.: 1756-PB72
Condition： In stock
Product Type: Power Supply Unit
Product Origin: USA
Payment: T/T, Western Union
Weight: 1120g
Shipping port: Xiamen
Warranty: 12 months
Estimate delivery times: 12-26 days (International), 3-6 days (United States).
Return within 30 days of purchase. Duties & taxes are non-refundable.
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Power Architecture & System Integration
Designed by Rockwell Automation, the 1756-PB72 is a high-performance standard DC power supply engineered for the ControlLogix ecosystem. It accepts a nominal 24V DC input (18-32V DC range) and mounts directly onto the leftmost dedicated power slot of 1756 Series A, B, and C chassis without consuming standard I/O module slots.
Technical Specifications & Electrical Parameters
| Manufacturer | Rockwell Automation |
| Brand | Allen-Bradley |
| Model / Part Number | 1756-PB72 |
| Product Series | ControlLogix |
| Module Type | Standard DC Power Supply |
| Input Voltage | 24V DC Nominal (18-32V DC Range) |
| Power Output Capacity | 75 Watts at 60 °C |
| Current Ratings | 10A @ 5.1V DC / 2.8A @ 24V DC / 4A @ 3.3V DC |
| Isolation Rating | 250V Continuous (Reinforced, 3500V DC Type Tested) |
| Hold-Up Time | 40 ms at 24V DC |
Diagnostic Indicators & Environmental Resilience
A single status LED indicator located at the upper right section of the module reports real-time power health. The unit features built-in overcurrent protection, 30A maximum inrush limitation, and robust surge transient immunity. Its heavy-duty enclosure withstands 30G operating shock and 2G operational vibrations within industrial environments.
Global PLC Spare HUB Insight & Field Best Practices
Global PLC Spare HUB technical specialists advise ensuring that the chassis backplane ground terminal and the power supply earth screw are tied directly to a low-impedance mounting plate ground. Skipping this step can compromise the reinforced insulation protection against high-frequency industrial noise and EFT/B surges.
Target Equipment & Deployment Scenarios
The 1756-PB72 powers expansive rack-mounted architectures in heavy industrial sectors. Ideal applications include large-scale manufacturing automation systems, power generation control racks, continuous petrochemical processing units, and high-density distributed control nodes.
Logistics, Shipping & Warranty Protection
All units ship swiftly within 24 to 48 hours worldwide. Trusted logistics carriers include FedEx, UPS, and DHL. Every 1756-PB72 power supply comes fully backed by our comprehensive 12-month operational warranty.
Selection Guide & Compatibility Checklist
Verify that your incoming source voltage matches the 18-32V DC operational window. Confirm that your backplane current load calculations across the 1.2V, 3.3V, 5.1V, and 24V rails do not exceed the 75W total output threshold at your maximum cabinet operating temperature.
Frequently Asked Questions
Q: Does the 1756-PB72 take up a standard I/O slot in the ControlLogix chassis?
A: No, it installs into the dedicated power supply slot located on the far left side of the 1756 chassis.
Q: What maintenance is required when wiring the DC input terminals?
A: Pop out the front cover door to access clearly marked DC+ and DC- terminals, and ensure proper protective earth wiring is secured.
Q: How does ambient temperature affect the current capacity of this module?
A: Current output capabilities derate slightly at higher temperatures; for instance, the 5.1V rail delivers 8A at 50 °C and 6A at 60 °C.
Q: Can this power supply be deployed in residential electrical environments?
A: No, it is designed strictly for industrial locations and may not provide adequate radio communication protection in residential zones.
Q: What is the purpose of the reinforced insulation testing specification?
A: It guarantees that the power input circuitry is safely isolated from the backplane up to 3500V DC for 60 seconds.
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Q: Are these parts 100% original and new?
A: Yes. Every component is guaranteed to be 100% original, brand-new, and factory-sealed. We also provide a 12-month comprehensive warranty for your peace of mind.
Q: How fast is the shipping to my country?
A: For in-stock items, we offer same-day dispatch. International express shipping (DHL/FedEx/UPS) typically delivers within 3–5 business days worldwide.
Q: Can I get a formal quotation with shipping costs?
A: Absolutely. Our sales team is ready to provide a detailed Proforma Invoice (PI) including the most competitive shipping rates for your location.
Q: Do you offer discounts for bulk orders?
A: We provide volume-based pricing for large projects or multiple-item orders. Please contact us to get our Best Price Guarantee.
12-Month Comprehensive Warranty
Every part supplied by Global PLC Spare Hub is covered by a 12-month warranty from the date of invoice.
- Coverage: Functional defects and hardware failures under normal operating conditions.
- Commitment: We provide immediate repair, replacement, or a full refund for any verified defective components to minimize your operational downtime.
Returns & Exchange Policy
We offer a 30-day return policy to ensure you receive the exact part your system requires.
- Eligibility: Returns are accepted for uninstalled items in their original, factory-sealed packaging.
- RMA Process: Please contact our support team to obtain a Return Merchandise Authorization (RMA) number before shipping.
- Fast Processing: Refunds or exchanges are processed within 3–5 business days after the returned item passes our technical inspection.
Need Technical Assistance?Not sure if this part is compatible with your system? [Consult our Engineers] before purchasing to ensure 100% compatibility.
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