1. Automation/Motion Controls For Sale
  2. sku: 13396555691351861
  3. SIEMENS 3RT2017-2KB41-1AA0

SIEMENS 3RT2017-2KB41-1AA0 Contactor LOC4E26

3rt2017-2kb41-1aa0 Siemens Contactor Lot Of 3 Loc4e26

( Brand: Siemens ), ( Manufacturer Part Number: 3RT2017-2KB41-1AA0 ), ( Part Type: Contactor ), ( Country Of Origin: Germany )

Review SIEMENS Contactor Lot Of

The **Siemens 3RT2017-2KB41-1AA0** is a high-performance, compact contactor designed for demanding industrial applications where reliability, efficiency, and space optimization are critical. Part of Siemens robust **3RT series**, this contactor is engineered to deliver superior switching performance in low-voltage AC power control circuits, making it an ideal choice for motor starting, load control, and general-purpose automation in manufacturing, HVAC systems, and process industries. With a **2-pole configuration (2KB41)**, it is specifically tailored for applications requiring precise current handling and minimal arc formation, ensuring extended component lifespan and reduced maintenance downtime. The **LOC26** designation indicates its compatibility with Siemens **LocoMat** or **LocoMatic** control systems, enabling seamless integration into advanced automation architectures where modularity and scalability are essential. Constructed with Siemens proprietary **silver-chrome contact material**, this contactor offers exceptional resistance to welding and pitting, even under high inrush currents and frequent switching cycles, while its **compact footprint** allows for efficient panel integration without compromising performance. The **1AA0** variant further emphasizes its suitability for **low-voltage (up to 690V AC)** applications, where it can reliably manage currents up to **25A (at 690V AC)** with minimal heat dissipation, thanks to its optimized thermal design. Featuring a **mechanical life expectancy of over 10 million operations**, this contactor ensures long-term durability in harsh environments, while its **auxiliary contacts (if included in the configuration)** provide additional flexibility for control signal routing. Whether deployed in conveyor systems, pump controls, or industrial machinery, the **3RT2017-2KB41-1AA0** exemplifies Siemens commitment to precision engineering, combining **high switching capacity, low energy consumption, and seamless compatibility** with modern automation solutions to enhance operational efficiency and reduce system complexity.

### **Pros and Cons of buying a Siemens 3RT2017-2KB41-1AA0 Contactor (LOC4E26)**

#### **Pros**

1. **High Reliability and Durability** Siemens is a well-established brand known for manufacturing high-quality electrical components. This contactor is designed for industrial applications, offering long service life and resistance to wear and tear.

2. **Compatibility with Siemens Systems** As part of the Siemens 3RT series, this contactor is engineered to integrate seamlessly with other Siemens control systems, relays, and automation solutions, reducing compatibility issues in industrial setups.

3. **Wide Voltage and Current Ratings** The unit is rated for **230V AC, 250V AC, or 400V AC** and supports **20A** (depending on configuration), making it suitable for medium-power applications like motor control, heating systems, or lighting circuits.

4. **Compact and Space-Efficient Design** The **LOC4E26** mounting style (4-pole, 26mm width) allows for installation in tight spaces, which is beneficial in industrial control panels where space optimization is critical.

5. **Standardized and Easy to Source** Being a widely available Siemens part, it can be easily ordered from authorized distributors, reducing lead times compared to niche or discontinued components.

6. **Modular and Replaceable** Siemens contactors are designed for easy replacement, meaning if a component fails, it can be swapped without major system modifications.

7. **Safety Features** Siemens contactors typically include arc suppression, overload protection, and sometimes built-in auxiliary contacts for safety interlocking, reducing the risk of electrical faults.

8. **Global Availability of Support** Siemens provides technical documentation, spare parts, and customer support across multiple regions, ensuring troubleshooting and maintenance are straightforward.

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#### **Cons**

1. **Higher Upfront Cost** Compared to generic or aftermarket contactors, Siemens products are premium-priced. For budget-conscious projects, this may be a drawback unless reliability is a priority.

2. **Potential Overkill for Low-Power Applications** If the application only requires a fraction of the contactor s rated capacity (e.g., a small motor or low-wattage load), a lower-rated contactor might suffice, leading to unnecessary expense.

3. **Compatibility with Non-Siemens Systems** While Siemens components integrate well within their own ecosystem, interfacing with third-party control systems (e.g., Allen-Bradley, Schneider) may require additional adapters or modifications.

4. **Limited Customization** Unlike some generic contactors, Siemens units are not easily modified for specialized applications (e.g., custom coil voltages or mounting orientations) without additional components.

5. **Dependence on Siemens Parts Supply Chain** If Siemens discontinues this model or parts become scarce, sourcing replacements may become difficult, potentially increasing long-term costs.

6. **Learning Curve for Non-Siemens Users** Operators or technicians unfamiliar with Siemens branding may require training to properly install, configure, or troubleshoot the contactor.

7. **Potential for Overdesign in Simple Circuits** In non-critical applications (e.g., residential or small commercial setups), a Siemens contactor may be more robust than necessary, leading to higher costs without proportional benefits.

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### **Conclusion**

The **Siemens 3RT2017-2KB41-1AA0 (LOC4E26)** contactor is a **high-quality, reliable choice** for industrial, commercial, or automation applications where **durability, compatibility with Siemens systems, and long-term performance** are priorities. Its standardized design, safety features, and ease of integration make it a strong option for professionals working within the Siemens ecosystem.

However, for **low-budget, non-critical, or non-Siemens systems**, the higher cost and potential over-engineering may not justify the investment. In such cases, a **generic or lower-cost brand** (e.g., Eaton, TE Connectivity, or Omron) could be a more economical alternative without sacrificing performance.

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### **Recommendation**

- **Buy this Siemens contactor if:**

- You are working within a **Siemens automation or control system**.

- The application requires **high reliability, long lifespan, or industrial-grade performance**.

- You need **compact mounting (LOC4E26)** in a space-constrained panel.

- You prioritize **brand support, documentation, and global availability of spare parts**.

- **Consider alternatives if:**

- The application is **low-power or non-critical**, and cost efficiency is a priority.

- You are using **non-Siemens control systems** and compatibility is a concern.

- A **lower-cost generic contactor** meets your voltage/current requirements without sacrificing quality.

For most **industrial, motor control, or automation projects**, this Siemens contactor is a **solid, long-term investment**. For **small-scale or cost-sensitive applications**, a thorough cost-benefit analysis against alternatives is advisable.

Details:

Our in house technicians refurbish a wide range of high failure, obsolete parts such as: AC/DC Servo Drives, Amplifiers, Touch Screens/ HMI's, Power Supplies, PLC's, Sensors, and virtually any industrial Circuit Boards. We endeavor to take good clear photos of our equipment that may show signs normal use such as scuffs, scratches, or other blemishes.

part #: 3rt20172kb411aa0 prices

  • $58.78-$80.10

specifications automationjack:

  • brand: Siemens
  • mpn: 3rt2017-2kb41-1aa0
  • part type: Contactor
  • country of origin: Germany

seller automationjack:

  • # reviews: 6562
  • city: Duncan, South Carolina
  • rating: 100.0%

general automationjack:

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

offer automationjack:

  • started: February 11, 2026
  • best offers: True
  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
  • quantity: 1

returns automationjack:

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

shipping automationjack:

  • type: Calculated
  • transit: 3-8 Days
  • service: UPS Ground, USPS Priority Mail, UPS 2nd Day Air, UPS Next Day Air
  • class: Standard, Expedited, One-day
  • cost: $13.23
  • carrier: UPS, USPS

payments automationjack:

  • other
  • wallet: Paypal
  • credit card: Discover
part type: contactor, country of origin: germany,
category: business & industrial > industrial automation motion controls > automation equipment, sku: 13396555691351861,
Siemens 3RT2017-2KB41-1AA0 Is Similar To:
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5 offers $58.78–$80.10 USD
  • Used. Offer #1 priced at $80.10 + $13.23 shipping estimate = $93.33* total. Our in house technicians refurbish a wide range of high failure, obsolete parts such as: AC/DC Servo Drives, Amplifiers, Touch Screens/ HMI's, Power Supplies, PLC's, Sensors, and virtually any industrial Circuit Boards.+$13.23 shipping
  • New. Offer #2 priced at $70.29 + $12.90 shipping estimate = $83.19* total. +$12.90 shipping
  • New. Offer #3 priced at $58.78 + $57.63 shipping estimate = $116.41* total. Scope of delivery: 1x Siemens contactor in original packa. A brand new Siemens SIRIUS coupling contactor (power contactor) is for sale.+$57.63 shipping
  • Neu. Offer #4 priced at $57.74 + $175.57 shipping estimate = $233.31* total. 3 Hauptschlie er (NO) + 1 Hilfsschlie er (NO). S00 (kompakte Bauweise).+$175.57 shipping
  • New – Open box. Offer #5 priced at $22.50 + $10.45 shipping estimate = $32.95* total. +$10.45 shipping

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