Description
Product Name: 505-EOA Allen Bradley Input module
Product details:
The Allen-Bradley Bulletin 505 Full-Voltage Reversing Motor Starter is a robust industrial device designed to control the starting, stopping, and, importantly, the directional reversal of three-phase AC motors.
📝 Product Details and Parameters (Example Configuration: 505-EOA-23)
| Parameter | Specification | Note |
| Product Type | NEMA Full-Voltage Reversing Starter | Provides a robust, heavy-duty solution. |
| NEMA Size | NEMA Size 4 | Indicates a specific range for horsepower and current ratings. |
| Coil Voltage | Typically 230-240V AC, 60 Hz | The voltage required to operate the starter’s control circuit (coil). |
| Motor Phases | Three-Phase | Designed for 3-phase AC motor control. |
| Max Horsepower | 50 HP (at 230-240V, 60Hz) | Maximum rated motor power for this size. |
| Continuous Current | 135 A | The maximum current the starter can handle continuously. |
| Service Limit Current | 156 A | The maximum momentary current it can handle. |
| Overload Protection | Typically Eutectic Alloy Overload Relay | Provides thermal protection against motor burnout due to overcurrent. |
| Enclosure Type | Open | Designed to be installed inside a separate control cabinet or enclosure. |
| Mechanical Life | 5 Million Operations (Approximate) | The durability of the contactors. |
⭐ Product Advantages
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Robust NEMA Construction: NEMA-rated starters are known for their heavy-duty design, ensuring high durability, mechanical strength, and long service life in demanding industrial environments.
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Reversing Capability: The key feature is the built-in capability to switch the motor direction (Forward/Reverse) by swapping two of the three power lines, which is crucial for many machinery operations.
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Field-Proven Reliability: Allen-Bradley (Rockwell Automation) industrial control products are widely recognized and supported, ensuring reliability and compatibility in existing systems.
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Easy Maintenance: The open construction often allows for easier inspection, maintenance, and replacement of parts like the coil or overload relay elements.
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Thermal Protection: When equipped with the Eutectic Alloy Overload Relay, it provides highly reliable, temperature-compensated motor protection.
⚠️ Important Considerations (Precautions)
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Enclosure Requirement: Since the 505-EOA is typically an Open type, it must be mounted inside a suitable electrical enclosure (like NEMA Type 1, 4, 12, etc.) to protect personnel from live components and protect the device from environmental factors (dust, moisture, etc.).
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Overload Sizing: The overload relay elements (if present) must be correctly selected and sized based on the specific motor’s Full Load Amperage (FLA) to ensure proper motor protection.
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Safety Interlocks: For reversing applications, proper electrical and/or mechanical interlocking is essential to prevent the simultaneous closure of both the Forward and Reverse contactors, which would cause a catastrophic short circuit.
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Control Wiring: Adhere strictly to wiring diagrams and local electrical codes during installation. Incorrect control wiring can lead to starter failure or unsafe operation.
🛠️ Product Applications
The Allen-Bradley 505-EOA Reversing Starter is used in any industrial application where a three-phase motor needs to be reliably started, stopped, and operated in two directions. Common applications include:
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Conveyors and Material Handling: To move products in two directions on an assembly line or processing system.
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Pumps and Agitators: Used in processes where fluid or material flow needs to be reversed.
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Machine Tools: Controlling the movement of axes or spindles on lathes, mills, and other machinery.
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Hoists and Cranes: Essential for raising and lowering (up/down) or traveling (forward/back) heavy loads.
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Automated Doors and Gates: Controlling the open and close cycle of large industrial access points.
Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!
We have the same series of models in stock. If you don’t find the model you need, please contact us and we will provide you with an official quotation！
Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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