CUTLER HAMMER 40-17720-02 Eaton Dpb 401772002DPB

( Brand: Cutler Hammer ), ( Manufacturer Part Number: 40-17720-02 )

Review CUTLER HAMMER Eaton Corporation Dpb Used

The **Cutler-Hammer 40-17720-02 (Eaton DPB Series)** is a robust and versatile **disconnect switch**, specifically designed for industrial and commercial electrical applications where reliable isolation, protection, and control are paramount. Part of Eaton s trusted DPB series, this device combines durability with precision engineering to ensure safe and efficient operation in demanding environments. Constructed with a **heavy-duty metal enclosure**, the disconnect switch is built to withstand harsh conditions, including exposure to dust, moisture, and temperature fluctuations, making it ideal for use in manufacturing plants, warehouses, data centers, and other facilities where electrical systems require frequent maintenance or emergency shutdowns. Its **manual lever operation** provides a straightforward and intuitive means of opening or closing the circuit, allowing operators to quickly isolate power for safety inspections, repairs, or routine servicing without the need for specialized tools.

The **40-17720-02** features a **three-pole design**, accommodating three-phase electrical systems commonly found in industrial motors, transformers, and other high-power equipment. This configuration ensures balanced current distribution and minimizes the risk of uneven wear or overheating, contributing to the longevity of both the disconnect switch and the connected load. The switch incorporates **effective arc-chute technology**, which safely contains and extinguishes electrical arcs during the opening process, reducing the risk of equipment damage or injury. Additionally, its **tamper-resistant mounting** ensures secure installation, preventing accidental activation or deactivation, which is critical in environments where safety protocols must be strictly adhered to.

Beyond its functional reliability, the **Cutler-Hammer 40-17720-02** is engineered for ease of integration into existing electrical panels. Its **standardized dimensions and mounting compatibility** align with industry norms, simplifying installation and replacement processes. The device is also equipped with **clear visual indicators**, such as labeled terminals and a distinct operating lever, which enhance usability and reduce the potential for human error. Whether deployed in a high-voltage industrial setting or a commercial facility requiring dependable power management, this disconnect switch delivers a perfect blend of performance, safety, and operational efficiency. Backed by Eaton s reputation for quality and innovation, the **DPB Series** continues to set a benchmark for electrical disconnect solutions, offering a dependable choice for professionals who demand both performance and peace of mind.

### **Pros and Cons of buying a Cutler-Hammer 40-17720-02 (Eaton DPB 401772002DPB) Motor Starter**

#### **Overview**

The **Cutler-Hammer 40-17720-02** (also known as the **Eaton DPB 401772002DPB**) is a **low-voltage, magnetic motor starter** designed for controlling three-phase AC induction motors. It is commonly used in industrial, commercial, and HVAC applications. Below is a detailed breakdown of its advantages and disadvantages.

---

### **Pros**

1. **Reliability and Durability**

- Cutler-Hammer (now part of Eaton) is a well-established brand with a long history of manufacturing high-quality electrical control equipment.

- The DPB series is known for robust construction, making it suitable for harsh industrial environments.

- Heavy-duty components, including thermal overload protection and mechanical interlocks, ensure long-term performance.

2. **Thermal Overload Protection**

- Built-in thermal overload relays protect the motor from overheating due to overloads, short circuits, or stalled conditions.

- Adjustable trip settings allow for customization based on motor requirements.

3. **Mechanical Interlocking**

- Includes **auxiliary contacts** and **mechanical interlocks** (e.g., NO/NC contacts) for safe and synchronized control of auxiliary devices.

- Prevents accidental operation by ensuring proper sequencing (e.g., preventing motor start if a door is open in an enclosure).

4. **Wide Compatibility**

- Designed to work with **standard three-phase motors** (typically 208V, 240V, 480V, or 600V).

- Compatible with various **control schemes**, including direct-on-line (DOL) starting, where applicable.

5. **Easy Installation and Maintenance**

- Standardized mounting (NEMA or IEC enclosures) simplifies integration into existing electrical panels.

- Replaceable thermal elements make maintenance straightforward no need to replace the entire starter if overload protection fails.

- Clear labeling and wiring diagrams aid in installation.

6. **Energy Efficiency Considerations**

- While not a direct energy-efficient component, its reliability reduces downtime, indirectly improving operational efficiency.

- Some models may support **soft-starting** when paired with additional devices (though this starter itself is not a soft starter).

7. **Industry Standard Compliance**

- Meets **UL, CSA, and IEC safety standards**, ensuring compliance with electrical codes in North America and Europe.

- Suitable for **explosion-proof (NEMA 7/9)** and **dust/water-resistant (NEMA 4/4X)** applications when used in appropriate enclosures.

8. **Cost-Effective for Medium-Duty Applications**

- More affordable than **variable frequency drives (VFDs)** or **soft starters** for basic motor control needs.

- Suitable for applications where **simple on/off control** is sufficient (e.g., pumps, fans, conveyors).

---

### **Cons**

1. **Limited Soft-Start or Speed Control**

- This is a **basic magnetic starter** and does not provide **soft-starting, speed control, or energy savings** like a VFD.

- If applications require **reduced inrush current, variable speed, or energy efficiency**, a VFD or soft starter would be a better choice.

2. **No Built-In Diagnostics**

- Unlike modern **smart motor starters or VFDs**, this unit lacks **remote monitoring, predictive maintenance features, or fault logging**.

- Troubleshooting may require manual inspection or additional relay-based systems.

3. **Mechanical Wear Over Time**

- The **magnetic coil and contacts** can degrade with frequent cycling, leading to **arcing, sticking, or failure**.

- Requires periodic **lubrication of moving parts** and **contact cleaning** to maintain performance.

4. **Size and Space Constraints**

- Occupies more physical space than **solid-state or electronic starters**, which may be a limitation in compact control panels.

- Heavier than some modern alternatives, which could complicate installation in space-constrained environments.

5. **No Built-In Overcurrent Protection (Beyond Thermal)**

- While it has **thermal overload protection**, it does **not** include **instantaneous overcurrent protection** (e.g., for short circuits).

- Typically requires an **external circuit breaker** upstream for full protection.

6. **Higher Inrush Current**

- Direct-on-line (DOL) starting causes **high starting currents (5-7x running current)**, which can stress the motor and electrical system.

- Not ideal for applications where **reduced inrush current** is critical (e.g., long motor leads, weak power supplies).

7. **Limited Digital Integration**

- No **modbus, Profibus, or other communication protocols** for integration with PLCs or SCADA systems.

- Requires **additional relays or contactors** for advanced control logic.

8. **Replacement Parts Availability**

- While still widely available, **older Eaton/Cutler-Hammer parts** may become harder to source in the future as the brand shifts focus to newer technologies.

- Some components (e.g., coils, contacts) may require backorders in certain regions.

9. **Not Ideal for High-Frequency Cycling**

- Designed for **intermittent or periodic duty**, not **continuous high-cycle applications** (e.g., frequent start-stop operations).

- Excessive cycling can lead to **coil burnout or contact fatigue**.

10. **No Built-In Energy Monitoring**

- Cannot track **motor efficiency, power factor, or energy consumption** unlike smart motor controllers or VFDs.

---

### **Conclusion**

The **Cutler-Hammer 40-17720-02 (Eaton DPB 401772002DPB)** is a **reliable, cost-effective solution for basic motor control** in applications where **simple on/off operation, thermal protection, and mechanical interlocking** are sufficient. It excels in **industrial, commercial, and HVAC systems** where **VFDs or soft starters are unnecessary**.

However, if the application requires **energy efficiency, soft starting, speed control, or advanced diagnostics**, a **VFD or electronic motor starter** would be a better investment. The DPB series is **not ideal for high-cycle, high-efficiency, or digitally integrated systems**.

For **medium-duty, standard motor control**, this starter remains a **proven and durable choice**, especially in environments where **mechanical reliability and simplicity** are prioritized over advanced features.

---

### **Recommendation**

- You need a **simple, reliable motor starter** for **basic on/off control**.

- Your application does **not require soft starting, speed control, or energy savings**.

- You operate in an **industrial or commercial setting** where **thermal protection and mechanical interlocks** are critical.

- Budget is a **primary concern**, and you prefer a **proven, long-lasting component**.

- You require **reduced inrush current, variable speed, or energy efficiency**.

- Your system needs **advanced diagnostics, remote monitoring, or digital integration**.

- The motor operates in a **high-cycle or harsh environment** where a **VFD or solid-state starter** would be more durable.

- You are looking for **space-saving or lightweight alternatives**.

- **For soft starting/energy efficiency:** Eaton VPF (Variable Performance Frame) or Schneider Electric Altivar.

- **For digital integration:** Siemens 3RW series or Rockwell Automation Motor Starters with PLC compatibility.

- **For high-cycle applications:** Solid-state relays or electronic motor starters (e.g., ABB ACS880 for VFDs).

If your application aligns with the **basic control needs** of this starter, it remains a **solid, cost-effective choice**. Otherwise, evaluating **modern alternatives** may lead to better long-term performance and flexibility.

Details:

Sells new and surplus product develops channels to purchase such. Part Number 40-17720-02 DPB. EATON CORPORATION 40-17720-02 DPB / 401772002DPB USED DISCONTINUED BY MANUFACTURER, BOARD, FOR USE WITH PANELMATE POWER SERIES. 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. Call to use a shipping service other than the ones listed.

part #: 401772002 prices

• $179.95-$380.00

specifications automationjack:

• brand: Cutler Hammer
• mpn: 40-17720-02

returns automationjack:

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

offer automationjack:

• quantity: 1
• started: February 27, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock

general automationjack:

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

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

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• # reviews: 192082
• city: 1 Millennium Dr, Willingboro, NJ 08046
• rating: 99.6%

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