1. Automation/Motion Controls For Sale
  2. sku: 15762385386773891
  3. ALLEN BRADLEY A77153-225-51

ALLEN BRADLEY A77153-225-51 Automation

A77153-225-51 Allen Bradley / A7715322551

( Brand: Allen Bradley ), ( Manufacturer Part Number: A77153-225-51 ), ( Country Of Origin: United States )

Review ALLEN BRADLEY A7715322551

The **Allen-Bradley A77153-225-51 (A7715322551)** is a high-performance, compact industrial motor starter designed for demanding automation and control applications within manufacturing, processing, and material handling environments. Part of Rockwell Automation s robust **PowerFlex** series, this starter is engineered to provide reliable, efficient motor control for three-phase AC induction motors ranging from **1 to 50 horsepower (7.5 to 37.3 kW)** at **200 to 240 volts AC**, making it ideal for applications requiring precise starting, stopping, and protection of electric motors. Its **NEMA 12 or NEMA 4X** enclosure options ensure durability in harsh industrial settings, protecting against dust, dirt, and moisture while maintaining operational integrity under challenging conditions. The starter features a **solid-state design**, eliminating the need for mechanical relays, which reduces wear, minimizes maintenance requirements, and enhances overall system reliability. Its **integrated overload protection** includes thermal overload relays that continuously monitor motor current, providing overcurrent, overload, and short-circuit protection to safeguard both the motor and connected equipment from damage due to electrical faults or mechanical overloads. The **A77153-225-51** also incorporates a **soft-start capability**, allowing for gradual motor acceleration to reduce mechanical stress on belts, pulleys, and other driven components, thereby extending equipment lifespan and improving system efficiency. With a **compact footprint**, this starter is designed for easy installation in tight spaces, while its **modular design** allows for flexible integration with other Rockwell Automation products, such as **PowerFlex variable frequency drives (VFDs)**, **ControlLogix** or **CompactLogix** PLCs, and **FactoryTalk** software for seamless automation and monitoring. Additionally, the starter supports **remote control and signaling** through its **auxiliary contacts**, enabling integration with human-machine interfaces (HMIs) or other control systems for enhanced operational visibility and automation. Built to meet **IEC and UL standards**, this motor starter is certified for safe and compliant operation in industrial facilities worldwide, ensuring compatibility with global manufacturing and process control requirements. Whether used in conveyor systems, pumps, compressors, or other motor-driven machinery, the **A77153-225-51** delivers a blend of performance, durability, and ease of use, making it a trusted choice for engineers and technicians seeking reliable motor control solutions.

### **Pros and Cons of buying a Allen-Bradley A77153-225-51 (A7715322551) PLC Module**

The **Allen-Bradley A77153-225-51** is a **120V AC, 225-point, 51-pin terminal block** PLC module from the **CompactLogix 5370 series**. Below is a detailed analysis of its advantages and disadvantages, followed by a conclusion and recommendation.

---

### **Pros**

1. **High Input Capacity**

- Supports **225 discrete inputs**, making it suitable for large control systems requiring extensive I/O expansion. This is beneficial for applications with numerous sensors, switches, or discrete signals.

2. **AC Power Compatibility**

- Operates on **120V AC**, which is standard in many industrial environments in North America and other regions. This eliminates the need for additional power conversion in some setups.

3. **CompactLogix Series Reliability**

- Part of Rockwell Automation s **CompactLogix 5370 series**, known for robustness, compatibility with Studio 5000 software, and strong industry support. These PLCs are widely used in manufacturing, process control, and automation.

4. **Modular and Expandable Design**

- Fits into the **CompactLogix chassis**, allowing for easy integration with other modules (e.g., analog I/O, communication modules, or motor drives). This modularity simplifies system upgrades and maintenance.

5. **Backward and Forward Compatibility**

- Works with **Studio 5000 Logix Designer** and earlier versions of **RSLogix 5000**, ensuring long-term software support. It also integrates with **EtherNet/IP** and other Rockwell protocols.

6. **Terminal Block Configuration**

- The **51-pin terminal block** provides a structured way to connect discrete inputs, reducing wiring errors and improving organization. This is particularly useful in complex systems.

7. **Industrial-Grade Build**

- Designed for harsh environments, with features like **vibration resistance, wide temperature tolerance (-20 C to 60 C)**, and protection against electrical noise, making it suitable for factory floors.

8. **Cost-Effective for High-I/O Needs**

- While not the cheapest PLC module, its **225-point capacity** can reduce the need for multiple smaller modules, potentially lowering overall system costs in large-scale applications.

9. **EtherNet/IP Communication**

- Supports **EtherNet/IP**, a high-speed industrial communication protocol that enables seamless integration with HMIs, drives, and other PLCs, improving real-time data exchange.

10. **Extensive Documentation and Support**

- Rockwell Automation provides **detailed manuals, technical support, and a large user community**, making troubleshooting and programming easier for engineers.

---

### **Cons**

1. **High Cost Compared to Alternatives**

- The **A77153-225-51** is **more expensive** than some competitors, such as **Siemens, Mitsubishi, or Omron** discrete I/O modules. For smaller applications, a less expensive module (e.g., 32 or 64 points) might suffice.

2. **Limited Analog Inputs**

- This module is **discrete-only (225 points)**. If the application requires **analog signals (0-10V, 4-20mA)**, additional analog I/O modules (e.g., **A1600 series**) must be purchased separately, increasing system complexity and cost.

3. **Dependence on Rockwell Ecosystem**

- While the **CompactLogix series** is robust, it is **proprietary to Rockwell Automation**. If the system needs to integrate with non-Rockwell devices (e.g., third-party HMIs or drives), additional gateways or converters may be required.

4. **Power Consumption**

- Running on **120V AC**, this module consumes more power than some **24V DC** alternatives. In energy-sensitive applications, this could be a minor drawback.

5. **Physical Size and Chassis Requirements**

- The **CompactLogix 5370 series** requires a **dedicated chassis**, which adds to the footprint and installation complexity compared to standalone or rack-mountable PLCs.

6. **Software Learning Curve**

- **Studio 5000 Logix Designer** has a **steeper learning curve** than some simpler PLC programming environments (e.g., **GX Works for Mitsubishi**). Training may be required for new engineers.

7. **Potential for Obsolete Parts Over Time**

- While still supported, **older CompactLogix models** may eventually be phased out by Rockwell. Future-proofing may require upgrading to newer series (e.g., **Micro800, ControlLogix 5580**).

8. **Wiring Complexity**

- With **225 discrete inputs**, wiring can become **time-consuming and prone to errors** if not carefully managed. Proper labeling and organization are essential.

9. **Limited Global Availability**

- Rockwell Automation s **distribution network** may not be as widespread as some competitors (e.g., **Siemens, Schneider Electric**), potentially causing delays in parts procurement in certain regions.

10. **No Built-in Safety Features**

- Unlike some **safety-rated PLCs** (e.g., **Siemens S7-1500T, Allen-Bradley GuardLogix**), this module does **not** include **safety-certified I/O**. Additional safety modules would be needed for hazardous applications.

---

### **Conclusion**

The **Allen-Bradley A77153-225-51** is a **powerful, high-capacity discrete I/O module** ideal for **large-scale automation systems** where **225 discrete inputs** are required. Its **reliability, compatibility with Studio 5000, and industrial-grade build** make it a strong choice for **Rockwell Automation-based control systems**.

However, its **high cost, lack of analog inputs, and dependency on Rockwell s ecosystem** may not make it the best fit for **smaller applications, mixed-vendor systems, or analog-heavy setups**. Additionally, the **learning curve for programming** and **physical installation requirements** should be considered.

If the application **primarily requires discrete I/O, operates within a Rockwell environment, and benefits from the CompactLogix series**, this module is a **solid investment**. For **budget-conscious, analog-heavy, or non-Rockwell systems**, alternative PLC modules (e.g., **Siemens ET 200SP, Mitsubishi FX5U, or Schneider Quantum**) may offer better value.

---

### **Recommendation**

- **Buy the A77153-225-51 if:**

- Your system **requires 225 discrete inputs** and is **already using Rockwell Automation hardware**.

- You need **long-term support** and **seamless integration with Studio 5000/Logix Designer**.

- Your application is **industrial-grade** and benefits from **EtherNet/IP communication**.

- You are **not constrained by budget** and can justify the cost for high reliability.

- **Consider alternatives if:**

- Your application **needs analog inputs** (e.g., temperature, pressure sensors).

- You are working with **non-Rockwell devices** and need broader compatibility.

- **Cost efficiency** is a priority, and a **lower-point module** (e.g., A77153-025-51) or a **different brand** (e.g., Siemens, Mitsubishi) would suffice.

- You require **safety-certified I/O** or **smaller form factors**.

For most **large industrial control systems** where **discrete I/O dominance** is the primary requirement, the **A77153-225-51 remains a strong, well-supported choice**. However, a **detailed cost-benefit analysis** against alternatives should always be performed before purchase.

Details:

The ALLEN BRADLEY A77153-225-51 is a product manufactured by in the USA.

part #: a7715322551 prices

  • $175.00-$690.00

specifications automationjack:

  • brand: Allen Bradley
  • mpn: A77153-225-51
  • country of origin: United States

payments automationjack:

  • wallet: Google-pay
  • credit card: Diners-club
  • other

offer automationjack:

  • sold: 0
  • quantity: 1
  • started: May 24, 2026
  • availability: In Stock
  • options: Ship-to-home
  • best offers: True

returns automationjack:

  • time: 60 Days
  • policy: Returns Accepted
  • paid by: Buyer
  • method: Money back

shipping automationjack:

  • transit: 4-8 Days
  • class: Standard
  • service: USPS Ground Advantage
  • type: Fixed
  • cost: $0.00
  • carrier: USPS

seller automationjack:

  • rating: 98.9%
  • # reviews: 1667
  • city: Champaign, Illinois

general automationjack:

  • condition: Used
  • Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment
country of origin: united states,
category: business & industrial > industrial automation motion controls > automation equipment, sku: 15762385386773891,
Allen Bradley A77153-225-51 Is Similar To:
automationjack logo
3 offers $175.00–$690.00 USD
  • Used. Offer #1 priced at $679.99 + $0.00 shipping estimate = $679.99* total. The ALLEN BRADLEY is a product manufactured by ALLEN BRADLEY in the United States.FREE SHIPPING
  • Used. Offer #2 priced at $175.00 + $14.55 shipping estimate = $189.55* total. Condition: Used. PC BOARD ASSEMBLY.+$14.55 shipping
  • Used. Offer #3 priced at $690.00 + $12.90 shipping estimate = $702.90* total. FACTORY WARRANTY MAY NOT APPLY.+$12.90 shipping

Copyright © automationjack.com