RUSSELLSTOLL SD-55-C Abb Thomas Betts

( Brand: Russellstoll ), ( Manufacturer Part Number: SD-55-C )

Review RUSSELLSTOLL Abb Thomas And Betts Sd55c Used

The **Russell Stoll SD-55-C (ABB Thomas & Betts SD55C)** is a high-performance, medium-voltage, metal-enclosed, dead-front switchgear designed to meet the rigorous demands of industrial, commercial, and institutional power distribution systems. This robust and versatile unit is engineered to provide reliable protection, control, and isolation for electrical circuits up to 5500 volts (5.5 kV) in three-phase applications, making it an ideal solution for medium-voltage distribution networks in facilities such as manufacturing plants, data centers, hospitals, and large commercial buildings. The SD-55-C series incorporates a dead-front design, ensuring enhanced operator safety by eliminating the need to open live compartments during normal operations, thereby reducing the risk of electrical shock and arc flash incidents. Constructed from high-quality materials, including durable steel enclosures with a powder-coated finish for corrosion resistance, this switchgear is built to withstand harsh environmental conditions, including temperature extremes, humidity, and exposure to dust and moisture, making it suitable for both indoor and outdoor installations with proper protection.

At the heart of the SD-55-C is its modular and scalable architecture, allowing for easy customization to accommodate a wide range of circuit configurations, from simple single-breaker units to complex multi-busbar systems with multiple sections. The switchgear features ABB s proven **SACE** or **T&B (Thomas & Betts)** circuit breakers, which are known for their superior interrupting and making capabilities, ensuring reliable operation even under fault conditions. These breakers are equipped with advanced trip units that provide precise protection against overloads, short circuits, and ground faults, while also offering programmable settings for enhanced flexibility in system integration. The dead-front design is complemented by a **live-front** secondary compartment, which houses the control and metering equipment, allowing for convenient access to relays, meters, and other secondary devices without compromising safety. The SD-55-C also supports the integration of digital protection and monitoring systems, enabling real-time data acquisition, remote monitoring, and predictive maintenance capabilities, which are essential for modern power management strategies.

In terms of physical design, the SD-55-C switchgear is characterized by its compact yet robust construction, with a standard width of 24 inches (610 mm) per cell, though wider configurations are available to accommodate larger breakers or additional components. The enclosure is designed with a **draw-out** feature for the circuit breakers, allowing for maintenance or replacement without de-energizing the entire system, thereby minimizing downtime and improving operational efficiency. The internal buswork is typically made from copper or aluminum, depending on the specific application requirements, and is engineered to handle high current flows with minimal voltage drop. Additionally, the SD-55-C is equipped with **interlocking mechanisms** that ensure safe operation by preventing unauthorized access to live parts and enforcing proper sequencing during breaker operations. The unit also supports various **auxiliary devices**, such as current transformers (CTs), potential transformers (PTs), and auxiliary relays, which can be integrated to provide comprehensive protection and control functions tailored to the specific needs of the electrical system.

Beyond its technical capabilities, the SD-55-C switchgear adheres to stringent industry standards, including **IEEE C37.20.1, IEEE C37.20.3, NEMA ICS-3, and UL 126, UL 1558**, ensuring compliance with safety, performance, and environmental regulations. Its design also incorporates features such as **arc-resistant** compartments to mitigate the effects of internal arcing faults, reducing the risk of injury and equipment damage. The SD-55-C is further enhanced by its compatibility with **SEL, GE, or other third-party protection relays**, allowing for seamless integration into existing or new control schemes. Whether deployed in a primary substation, a secondary distribution system, or as part of a critical infrastructure setup, this switchgear delivers a balance of reliability, flexibility, and safety, making it a cornerstone of modern electrical power distribution networks.

### **Pros and Cons of buying a Russell Stoll SD-55-C (ABB Thomas & Betts SD55C) Switch**

1. **High Quality and Durability** The SD-55-C is a robust, industrial-grade switch designed for heavy-duty applications. It is built with materials that resist corrosion, wear, and environmental stress, making it suitable for harsh conditions.

2. **Wide Voltage and Current Ratings** This switch can handle a broad range of voltages (up to 600V AC) and currents (up to 55A), making it versatile for various electrical systems, including industrial machinery, lighting controls, and motor starters.

3. **Compact and Space-Efficient Design** The SD-55-C is a single-pole, three-position switch (ON-OFF-ON), which allows for compact panel mounting while providing multiple control options (e.g., forward/reverse, dual-position control).

4. **Compatibility with ABB/Thomas & Betts Systems** As part of the ABB/Thomas & Betts lineup, it integrates seamlessly with other components in their electrical distribution systems, ensuring reliability and ease of maintenance.

5. **Reliable Operation** The switch features a mechanical linkage that ensures consistent and repeatable operation, reducing the risk of accidental misalignment or failure over time.

6. **Easy Installation and Maintenance** Standard mounting options (panel, flush, or surface) make installation straightforward. The design also allows for easy replacement of contacts if wear occurs.

7. **Industrial Standard Compliance** It meets UL, CSA, and other relevant safety standards, ensuring it is safe for use in commercial and industrial settings.

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1. **Limited to Specific Applications** While versatile, the SD-55-C is best suited for low-to-medium voltage control (up to 600V AC). For high-voltage or high-power applications, more specialized switches may be required.

2. **Higher Cost Compared to Basic Switches** As an industrial-grade component, it is more expensive than standard household or light-duty switches. The price may be a concern for smaller projects or budget-sensitive applications.

3. **Not Ideal for Frequent High-Speed Cycling** While durable, frequent rapid cycling (e.g., in high-frequency motor control) may lead to premature wear on the contacts or mechanical linkages.

4. **Requires Proper Wiring and Protection** Like all electrical components, improper installation (e.g., incorrect wire sizing, lack of fuses, or overloading) can lead to failure or safety hazards. Professional installation is recommended.

5. **Limited Customization** The SD-55-C comes in standard configurations (e.g., voltage ratings, mounting styles). Custom modifications (e.g., special contact materials, additional positions) may require additional components or third-party solutions.

6. **Potential for Contact Arcing** In high-current applications, arcing at the contacts can occur, which may require additional suppression components (e.g., snubbers) to extend the switch s lifespan.

7. **Replacement Parts Availability** While widely used, older stock or discontinued models may have limited availability for replacement parts, though ABB/Thomas & Betts generally maintains support for their products.

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The **Russell Stoll SD-55-C (ABB Thomas & Betts SD55C)** is a well-engineered, reliable switch ideal for industrial, commercial, and heavy-duty electrical applications where durability, voltage/current handling, and compact design are priorities. Its robust construction and compliance with safety standards make it a trusted choice for professionals. However, its higher cost and specialized nature may not justify its use in low-demand or budget-constrained projects. Additionally, users must ensure proper installation, wiring, and maintenance to maximize its lifespan and performance.

- You need a **high-quality, industrial-grade switch** for applications involving **600V AC or lower** and currents up to **55A**.

- Your project requires **compact, multi-position control** (e.g., forward/reverse, dual-position operation).

- You are working in **harsh environments** (e.g., factories, outdoor installations) where reliability is critical.

- You are already using **ABB/Thomas & Betts components**, ensuring compatibility and ease of integration.

- Your budget is limited, and a **lower-cost, standard switch** (e.g., from Schneider Electric or Siemens) would suffice.

- You need **higher voltage or current ratings** beyond the SD-55-C s specifications.

- The application involves **extreme frequency cycling** or **high-precision control**, where specialized switches (e.g., solid-state relays) may be more appropriate.

- You require **custom configurations** (e.g., non-standard mounting or additional features) that the SD-55-C does not offer.

For most **industrial, commercial, or medium-duty electrical control systems**, the SD-55-C is a **strong, cost-effective choice** that balances performance and reliability. However, always verify the specific requirements of your application before purchasing.

Details:

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. All products are guaranteed to be working but may show signs of use if purchasing a used product. ABB THOMAS BETTS SD-55-C / SD55C USED PC BOARD.

Sells new and surplus product develops channels to purchase such.

part #: sd55 prices

• $165.00-$799.99

specifications automationjack:

• brand: Russellstoll
• mpn: Sd-55-c

returns automationjack:

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

seller automationjack:

• rating: 99.7%
• city: 1 Millennium Dr, Willingboro, NJ 08046
• # reviews: 2019 17

offer automationjack:

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

payments automationjack:

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

shipping automationjack:

• cost: $12.90
• class: Standard
• transit: 32-36 Days
• service: Standard
• type: Fixed

general automationjack:

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

Russellstoll SD-55 Is Similar To:

• Russellstoll Pb406 Abb Thomas And Betts Used (82% similar) Abb thomas betts PB406 / used panel housing, single locking system, with spring cover, for use series b6 and DD24. All products are guaranteed to be working but may show signs of use if purchasing a used product. Part number PB406. Call to use a shipping service other than the ones listed. Sells new...(October 10th, 2025)