CUTLER HAMMER 9-1811-5 Eaton
( Brand: Cutler Hammer ), ( Manufacturer Part Number: 9-1811-5 )
Review CUTLER HAMMER Eaton Corporation 918115 Used
The **Cutler-Hammer 9-1811-5 (Eaton 918115)** is a robust, high-performance **low-voltage motor control center (MCC) circuit breaker**, engineered to deliver reliable protection and control for industrial and commercial electrical systems. Part of Eaton s renowned **PowerXpert** series, this breaker is designed to meet stringent industry standards, including **NEMA 1/3R** enclosure compatibility, ensuring durability in demanding environments where dust, moisture, and temperature fluctuations are common. With a **continuous current rating of 1,000 amps** and a **tripping curve classification of B, C, or D**, this breaker offers precise overload and short-circuit protection tailored to the specific needs of motors, transformers, and other high-demand loads. Its **magnetic trip unit** provides instantaneous response to fault conditions, while the **thermal trip mechanism** ensures gradual overload protection, preventing equipment damage while minimizing downtime. The breaker s **compact yet sturdy construction** allows for efficient space utilization in panel builds, making it ideal for applications in manufacturing plants, data centers, and large-scale infrastructure where reliability is non-negotiable. Featuring **Eaton s advanced electronic trip unit technology**, the 918115 incorporates **adjustable trip settings**, including **instantaneous trip curves and time-delay adjustments**, enabling fine-tuned protection against nuisance tripping while maintaining optimal system performance. Additionally, its **modular design** allows for easy integration with Eaton s **PowerXpert MCC systems**, facilitating seamless expansion and maintenance. Built to withstand **high mechanical and electrical stresses**, this breaker is equipped with **copper alloy contacts** for superior conductivity and longevity, reducing the risk of arcing and ensuring consistent operation over extended periods. Whether deployed in **new construction or retrofitting projects**, the Cutler-Hammer 9-1811-5 stands as a dependable solution for protecting critical electrical circuits, offering a perfect balance of **performance, safety, and operational efficiency** in industrial settings.
The **Cutler-Hammer 9-1811-5 (Eaton 91811-5)** is a **120V, 15-amp, single-phase, 2-pole motor starter** designed for controlling electric motors in industrial and commercial applications. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.
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### **Pros of buying a Cutler-Hammer 9-1811-5 (Eaton 91811-5)**
1. **Reliability and Durability**
- Manufactured by Eaton (formerly Cutler-Hammer), a well-established brand known for high-quality industrial electrical components. These starters are built to withstand harsh environments, including temperature fluctuations, vibration, and moisture, making them suitable for industrial settings.
- Robust construction with heavy-duty contacts and thermal protection to prevent overheating and extend the lifespan of the motor and starter.
2. **Thermal Overload Protection**
- Includes built-in thermal overload relays that protect the motor from overload conditions, reducing the risk of damage from excessive current draw. This feature helps prevent unexpected motor failures and extends equipment lifespan.
- Adjustable trip settings allow for customization based on motor requirements, providing flexibility in different applications.
3. **Easy Installation and Maintenance**
- Designed for straightforward installation with standard mounting brackets and clear wiring diagrams. The compact size makes it suitable for applications where space is limited.
- Accessible components for easy maintenance, such as replaceable thermal elements and contacts, reducing downtime.
4. **Compatibility with a Wide Range of Motors**
- Suitable for controlling standard AC induction motors in the 15-amp range, making it versatile for applications like pumps, fans, compressors, and conveyors.
- Works well with Eaton s broader line of motor controls, allowing for seamless integration into larger control systems.
5. **Safety Features**
- Includes a manual reset feature for thermal overloads, ensuring operators can safely restart the motor after a fault without requiring specialized tools.
- Enclosed design helps prevent accidental contact with live parts, enhancing operator safety.
6. **Cost-Effective for Light-Duty Applications**
- Priced affordably compared to more advanced or high-end motor starters, making it a cost-effective solution for basic motor control needs in small to medium-sized operations.
- Lower maintenance costs over time due to its durability and reliability.
7. **Compatibility with Eaton s Control Systems**
- Integrates well with Eaton s PLCs, relays, and other control devices, allowing for easy incorporation into automated systems. This compatibility simplifies system design and reduces integration challenges.
8. **Long-Term Availability**
- As a legacy product from Eaton, parts and replacements are still widely available, reducing the risk of obsolescence. This ensures that maintenance and repairs can be performed even years after initial installation.
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### **Cons of buying a Cutler-Hammer 9-1811-5 (Eaton 91811-5)**
1. **Limited Current Rating**
- The 15-amp rating restricts its use to smaller motors. For applications requiring higher current (e.g., 20 amps or more), a larger starter or a different model would be necessary, potentially increasing costs.
- Not suitable for heavy-duty industrial applications where motors draw significantly more current.
2. **Outdated Technology**
- This is an older model (discontinued but still in use), and it lacks modern features such as electronic monitoring, digital diagnostics, or communication interfaces (e.g., Modbus, Profibus). This limits its use in smart or automated systems.
- Relies on mechanical thermal overload relays, which may be less precise than electronic alternatives in detecting faults.
3. **Manual Operation Limitations**
- The starter is primarily manual, requiring physical intervention to start or stop the motor. While this is sufficient for many applications, it lacks the convenience of remote or automated control.
- No built-in electronic timing or sequencing capabilities, which may require additional relays or controllers for complex applications.
4. **Potential for Wear and Tear**
- Like all mechanical components, the contacts and thermal elements can wear out over time, requiring periodic inspection and replacement. While this is common to all motor starters, the lack of advanced diagnostics makes it harder to predict maintenance needs.
- Exposure to dust, moisture, or corrosive environments can accelerate wear, necessitating more frequent maintenance in harsh conditions.
5. **Limited Customization**
- The starter s design is fixed, with limited options for additional features such as auxiliary contacts, timers, or special control modes. Users requiring specialized functionality may need to pair it with external components.
- No built-in overload adjustment for different motor types without manual intervention, which can be inconvenient for applications with varying loads.
6. **Discontinued Status**
- While parts are still available, Eaton has moved away from producing this exact model, which may lead to challenges in sourcing replacements for very specific or rare components in the future.
- Newer Eaton models may offer improved performance, efficiency, or features, making this starter less optimal for new installations where budget allows for more advanced options.
7. **No Built-In Energy Monitoring**
- Unlike modern starters with energy-saving features (e.g., soft start, variable frequency drives), this model does not offer ways to optimize motor performance or reduce energy consumption. This can be a drawback in applications where energy efficiency is a priority.
8. **Installation Space Requirements**
- While compact, the starter may still require more space than electronic or solid-state alternatives, which can be more compact and modular. This could be a limitation in tight or densely packed control panels.
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### **Conclusion**
The **Cutler-Hammer 9-1811-5 (Eaton 91811-5)** is a **reliable, cost-effective, and durable** motor starter well-suited for **basic, low-to-medium current motor control applications** in industrial or commercial settings. Its thermal overload protection, ease of maintenance, and compatibility with Eaton s ecosystem make it a practical choice for many users. However, its **limited current rating, outdated technology, lack of advanced features, and manual operation** can be significant drawbacks for applications requiring higher performance, automation, or modern diagnostics.
For **new installations or applications needing higher efficiency, remote control, or integration with smart systems**, newer Eaton models (e.g., the **Eaton MOVITRAC B or MOVITRAC L series**) or solid-state starters may be more appropriate. Alternatively, if budget is a constraint and the application is straightforward, this starter remains a **solid, long-lasting solution** for controlling smaller motors where simplicity and reliability are prioritized.
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### **Recommendation**
- **Buy the Cutler-Hammer 9-1811-5 (Eaton 91811-5) if:**- You need a **simple, reliable, and cost-effective** motor starter for **15-amp, single-phase motors** in a **non-critical application**.
- Your system **does not require advanced features** like remote control, energy monitoring, or digital diagnostics.
- You are maintaining an **existing system** where this starter is already in use, and parts are readily available.
- The environment is **not excessively harsh**, and maintenance can be performed regularly.
- **Consider an alternative if:**- You require **higher current ratings** (e.g., 20 amps or more) or **variable frequency control** (VFD compatibility).
- Your application benefits from **automation, remote monitoring, or energy-efficient features** (e.g., soft start).
- You are installing a **new system** and want **long-term flexibility** with modern technology.
- The application involves **hazardous environments** where more advanced protection (e.g., explosion-proof or intrinsically safe) is needed.
For **new projects**, evaluating **Eaton s newer MOVITRAC series** or other modern motor starters may provide better long-term value, even if the initial cost is slightly higher. However, for **legacy systems or budget-conscious users**, the 9-1811-5 remains a **proven and dependable choice**.
Details:
Sells new and surplus product develops channels to purchase such. Call to use a shipping service other than the ones listed. All products are guaranteed to be working but may show signs of use if purchasing a used product. Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection.
part #: 918115 price
- $9.99
specifications automationjack:
- brand: Cutler Hammer
- mpn: 9-1811-5
payments automationjack:
- credit card: Visa
- other
- wallet: Google-pay
seller automationjack:
- city: 1 Millennium Dr, Willingboro, NJ 08046
- rating: 99.6%
- # reviews: 194517
general automationjack:
- condition: Used
- Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment
shipping automationjack:
- transit: 23-35 Days
- cost: $12.90
- class: Standard
- service: Standard
- type: Fixed
returns automationjack:
- time: 30 Days
- policy: Returns Accepted
- paid by: Buyer
- method: Money back
offer automationjack:
- quantity: 1
- availability: In Stock
- options: Ship-to-home
- started: March 14, 2026
- sold: 0
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