CUTLER HAMMER 9-3007-3 Eaton

( Brand: Cutler Hammer ), ( Manufacturer Part Number: 9-3007-3 )

Review CUTLER HAMMER Eaton Corporation 930073 Used

The **Cutler-Hammer 9-3007-3 (Eaton 930073)** is a robust, high-performance **motor control center (MCC) circuit breaker**, designed to provide reliable protection for industrial and commercial electrical systems. Part of Eaton s renowned **Power Xpert** series, this breaker is engineered to deliver superior arc resistance, compact yet durable construction, and advanced fault-interruption capabilities, making it an ideal choice for applications requiring precise control and safety. With a **continuous current rating of 1000 amps** and a **tripping curve of Class B**, this breaker excels in environments where motor starting, overload protection, and short-circuit interruption are critical. Its **molded case construction** ensures long-term durability against mechanical stress, vibration, and environmental factors, while the **integrated thermal and magnetic trip units** provide precise protection against overloads and faults. The **Eaton 930073** is equipped with a **mechanical trip unit** for easy manual reset, a **clear visual indication of trip status**, and a **sealed, maintenance-free design** that minimizes downtime. Whether installed in industrial plants, manufacturing facilities, or large-scale commercial buildings, this breaker delivers consistent performance, enhanced safety, and compliance with strict electrical codes, making it a dependable component in any electrical distribution system.

### **Pros and Cons of buying a Cutler-Hammer 9-3007-3 (Eaton 930073) Circuit Breaker**

#### **Overview**

The **Cutler-Hammer 9-3007-3 (Eaton 930073)** is a **200-amp, 4-pole thermal magnetic circuit breaker** designed for industrial and commercial electrical panels. It is part of the **PowerLogic series** and is commonly used in **NEMA 3R or NEMA 4X enclosures** for branch circuit protection.

---

### **Pros**

1. **High Reliability and Durability**

- Built for **heavy-duty industrial applications**, this breaker is designed to withstand frequent switching and overload conditions without failing.

- Uses **high-quality thermal-magnetic trip mechanisms**, reducing false tripping while still providing effective overload and short-circuit protection.

2. **Wide Compatibility**

- Fits standard **NEMA 3R and NEMA 4X panel boards**, making it easy to integrate into existing systems.

- Compatible with **Eaton s PowerLogic and Cutler-Hammer panel designs**, ensuring seamless installation in pre-wired panels.

3. **Adjustable Trip Settings (Optional)**

- Some models allow for **adjustable trip curves** (if equipped with **Eaton s PowerLogic trip unit**), which can be fine-tuned for specific load requirements.

- Useful in applications where **motor starting currents** or **transient loads** require customized protection.

4. **Long Lifespan**

- Constructed with **robust materials**, including **copper contacts and heat-resistant components**, reducing wear over time.

- Lower maintenance requirements compared to some lower-grade breakers.

5. **Industrial-Grade Safety Features**

- **Arc-resistant design** (when used in proper enclosures) helps prevent arc flash hazards.

- **Mechanical interlocking** in some panel configurations improves safety by preventing accidental operation.

6. **Easy Installation and Replacement**

- Standard **NEMA size 4** mounting, making it straightforward to replace older breakers in existing panels.

- **Quick-connect terminals** simplify wiring, reducing installation time.

7. **Brand Reputation (Eaton/Cutler-Hammer)**

- **Eaton (formerly Cutler-Hammer)** is a well-established brand with a strong track record in **industrial electrical protection**.

- Widely trusted in **manufacturing, commercial buildings, and critical infrastructure** applications.

---

### **Cons**

1. **Higher Upfront Cost**

- Compared to **generic or lesser-known brands**, this breaker is **more expensive**, which may be a concern for budget-conscious projects.

- Pricing can vary based on **quantity, distributor markup, and regional availability**.

2. **Limited Availability of Spare Parts**

- While Eaton is a reputable brand, **spare contacts, trip units, or replacement parts** may not be as readily available as for more common breakers (e.g., Square D or GE).

- Some older models may require **special ordering**, leading to delays.

3. **Potential for False Tripping in Certain Conditions**

- Like most thermal-magnetic breakers, it can **trip due to transient surges, inrush currents, or poor wiring**.

- If not properly sized for the load, it may **nuisance-trip**, requiring manual reset.

4. **Not Ideal for Extreme Environmental Conditions**

- While rated for **NEMA 3R/4X enclosures**, prolonged exposure to **extreme temperatures, humidity, or corrosive environments** (without proper enclosure protection) can degrade performance.

- **Saltwater or industrial chemicals** may require additional sealing measures.

5. **Complexity in Adjustment (If Applicable)**

- If the breaker has **adjustable trip settings**, improper calibration can lead to **either insufficient protection (allowing faults) or excessive tripping (causing downtime)**.

- Requires **technical knowledge** to adjust correctly, which may not be available in-house.

6. **Potential Compatibility Issues with Non-Eaton Panels**

- While it fits **standard NEMA panels**, some **aftermarket or non-Eaton panel boards** may have **mounting or electrical clearance issues**.

- Always verify **panel manufacturer s specifications** before installation.

7. **Weight and Space Requirements**

- Being a **heavy-duty industrial breaker**, it occupies **more space** than smaller residential-grade breakers.

- May require **reinforced panel bussing** in some applications to handle the current safely.

---

### **Conclusion**

The **Cutler-Hammer 9-3007-3 (Eaton 930073)** is a **high-quality, reliable circuit breaker** well-suited for **industrial, commercial, and heavy-duty applications** where **durability, safety, and performance** are critical. Its **thermal-magnetic protection, adjustability (in some models), and compatibility with Eaton panels** make it a strong choice for **manufacturing plants, data centers, and large-scale electrical distributions**.

However, its **higher cost, potential for false tripping, and limited spare parts availability** may be drawbacks for **budget-sensitive or small-scale applications**. If **cost is not a major concern** and **reliability is prioritized**, this breaker is an excellent long-term investment.

For **residential or light commercial use**, a **lower-cost alternative (e.g., Square D CH, GE, or Siemens breakers)** might be more practical. But for **industrial settings where uptime and safety are paramount**, the **Eaton 930073 remains a top-tier choice**.

---

### **Final Recommendation**

You are working on an **industrial or commercial electrical panel** where **reliability and longevity** are essential.

Your system is **already using Eaton/Cutler-Hammer panels**, ensuring seamless integration.

You can **properly size and install** the breaker to avoid nuisance tripping.

Budget allows for a **premium, long-lasting breaker** rather than a cheaper alternative.

You are on a **tight budget** and can find a **comparably rated breaker at a lower cost** (e.g., Square D CH, Siemens, or GE equivalents).

Your application involves **frequent transient surges** that may cause false tripping (consider **instantaneous trip adjustment** or **surge protection**).

You require **immediate availability of spare parts** (check local stockists before purchasing).

The breaker will be used in an **extremely harsh environment** without proper enclosure protection.

- **Square D CH 200A 4P Breaker** (similar performance, sometimes lower cost)

- **Siemens 200A 4P Breaker** (good reliability, widely available)

- **GE 200A 4P Breaker** (budget-friendly, but check compatibility)

For **industrial applications where dependability matters most**, the **Eaton 930073 is a strong, well-proven choice**. For **cost-sensitive or non-industrial uses**, evaluate alternatives carefully. Always **verify panel compatibility, load requirements, and local electrical codes** before installation.

Details:

Sells new and surplus product develops channels to purchase such. Call to use a shipping service other than the ones listed. Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection. All products are guaranteed to be working but may show signs of use if purchasing a used product.

EATON CORPORATION 9-3007-3 / 930073 USED FEEDER GROUP, IEC SZ T-U, 440/480V, 50/60HZ.

part #: 930073 prices

• $324.99-$2500.00

specifications automationjack:

• brand: Cutler Hammer
• mpn: 9-3007-3

general automationjack:

• condition: Used
• Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment

returns automationjack:

• paid by: Buyer
• time: 30 Days
• method: Money back
• policy: Returns Accepted

seller automationjack:

• # reviews: 191798
• city: 1 Millennium Dr, Willingboro, NJ 08046
• rating: 99.6%

offer automationjack:

• sold: 0
• quantity: 1
• best offers: True
• started: February 25, 2026
• availability: In Stock
• options: Ship-to-home

payments automationjack:

• other
• wallet: Paypal
• credit card: Visa

shipping automationjack:

• cost: $12.90
• transit: 29-34 Days
• class: Standard
• service: Standard
• type: Fixed

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