Products Parameters
Descrption
The Allen-Bradley 1756-PB75R is a ControlLogix redundant power supply designed to improve system availability by reducing the risk of power-related downtime. It operates from a 24 V DC input and supports automatic load sharing when multiple power supplies are installed in a redundant configuration. A built-in status indicator provides visual confirmation of the operating condition.
The physical dimensions of the 1756-PB75R are approximately 140 × 112 × 145 mm (5.51 × 4.41 × 5.71 inches), and it weighs about 0.95 kg (2.10 lb). The module connects to the ControlLogix chassis through a 1756-CPR2 cable, which links the redundant power supply to a 1756-PSCA2 chassis adapter. To prevent electrical arcing and potential hazards, the cable should not be connected or disconnected while the backplane power is energized. Repeated connection cycles may also accelerate wear on the module contacts and mating connectors.
The voltage input terminals of the 1756-PB75R are auto-sensing, allowing flexible installation. The module can be replaced while the system is running in a non-redundant mode, minimizing disruption during maintenance. When paired with another 1756-PB75R, the two units form a hot-standby redundant power system in which one supply operates as the active source while the other remains on standby. If a fault occurs, the standby unit automatically assumes the load to maintain continuous system operation.
Technical Specifications
| Item | Specification |
|---|---|
| Manufacturer | Allen-Bradley |
| Category | PLCs |
| Product Line | ControlLogix |
| Part Number | 1756-PB75R |
| UPC | 612598274246 |
| Weight | 3.31 lbs (1.50 kg) |
| Module Type | Redundant Power Supply |
| Input Supply Voltage Range | 18–32 VDC |
| Nominal Supply Voltage | 24 VDC |
| Input Voltage | 24 Volts DC |
| Voltage Range | 19–32 Volts DC |
| Inrush Current (Max.) | 30 A |
| Output Power | 75 W @ 0–60 °C (32–140 °F) |
| Current Capacity @ 1.2 V | 1.5 A |
| Current Capacity @ 3.3 V | 4 A |
| Current Capacity @ 5.1 V | 13 A |
| Current Capacity @ 24 V | 2.8 A |
| Compatible Chassis | 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17 |
| Input Power | 110 W |
We have sold automation spare parts for almost 20 years! Wide range of brands and series we can supply.
Contact Sales Felicia for quotation and more info:
Our address
32D floor, Guomao Building, No.388, Hubin South Road, Siming District, Xiamen
Phone Number/Whatsapp(Wechat)
+86 18030132586
cn@mooreplc.com
Company Profile
We are the premier global supplier of industrial automation spare parts, renowned for its reliability and expertise. With decades of experience, we have built a formidable reputation as a one-stop solution for maintaining operational continuity in demanding industrial environments.
Our core strength lies in our vast, state-of-the-art inventory. We maintain a massive stock of thousands of critical components, ensuring same-day dispatch for most items to minimize costly downtime. Our product range encompasses a wide spectrum of leading brands, including Siemens, Allen-Bradley, Schneider Electric, ABB, and many more, providing our clients with unparalleled choice and compatibility.
Behind our operations is a team of highly professional and technically skilled specialists. Our experts offer invaluable technical support and guidance, helping you identify the correct part and troubleshoot complex issues. We are committed to delivering not just parts, but comprehensive solutions backed by exceptional customer service, making us the trusted partner for industries worldwide.
Quality
We are committed to purchasing and supplying high-quality industrial automation parts for our customers to ensure that they can rely on our products to keep their operations running smoothly.
Reliability
We understand the importance of minimizing downtime and maintaining normal operation, so we give priority to fast and efficient delivery to ensure that our customers receive parts as soon as possible.
Customer service
We are committed to providing excellent customer service and support to help our customers meet their unique industrial equipment needs. We are committed to surpassing to ensure that our customers get the best experience when they cooperate with us.
Common Problem
What payment methods do you accept?
We only accept 100% T/T in advance for your convenience.
Are the Allen Bradley 1756-PB75R Power Supply Module genuine and new?
Yes, we supply only 100% genuine, brand-new Allen Bradley 1756-PB75R Power Supply Module from certified manufacturers.
What is the main purpose of the Allen-Bradley 1756-PB75R in a ControlLogix system?
The 1756-PB75R is a redundant power supply designed to provide reliable DC power to ControlLogix chassis. Its primary role is to maintain uninterrupted system operation by supporting power redundancy and automatic failover.
How does redundancy work with the 1756-PB75R?
When two units are installed together, they operate in a hot-standby configuration. One supply actively powers the chassis while the second remains ready to take over instantly if a fault or power loss occurs.
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