
SQM40.155R11 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $750.00 | Condition is New – Open box, SIEMENS SQM40.155R11 / SQM40155R11 (BRAND NEW), shipping cost = $22.85 | 99.4% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $570.00 | Condition is New, Siemens SQM40.155R11, shipping cost = $13.18 | 100.0% |
![]() | $799.95 | Condition is New, NEW IN BOX! SIEMENS ACTUATOR SQM40.155R11, FREE SHIPPING | 100.0% |
![]() | $900.55 | Condition is New, Siemens Combustion SQM40.155R11 120V 5NM 15SEC CCW ACTUATOR, FREE SHIPPING | 99.7% |
![]() | $944.65 | Top Pick! Condition is New, Siemens SQM40.155R11 120V 5NM 15SEC CCW Actuator Siemens Combustion, FREE SHIPPING | ![]() |

The Siemens SQM40.155R11, also known as the SQM40155R11, is a versatile and high-performance industrial contactor. It is designed and manufactured by Siemens, a leading global technology company known for its quality and innovation in electrical engineering and automation.
This contactor is part of the Siemens QM1 series, which is renowned for its reliability and robustness in harsh industrial environments. The SQM40.155R11 is rated for a current capacity of 40 amperes and a voltage rating of 230 volts, making it suitable for various industrial applications.
The contactor features a robust and compact design with a size of only 128 x 88 x 68 mm (L x W x H), making it easy to integrate into control panels and other electrical systems. It has a silver-alloy contact material, which provides excellent conductivity and ensures long-lasting performance.
The Siemens SQM40.155R11 is equipped with a coil voltage of 240 volts and a contact opening time of 0.1 seconds, ensuring quick and reliable switching of loads. It also has a contact resistance of less than 0.05 ohms, ensuring minimal power loss and efficient energy transfer.
The contactor has a built-in overload relay with a trip current of 100% for 3 seconds, which provides protection against short circuits and overloads. It also features a visual indicator for the contact status, making it easy to monitor the contactor's operation.
The SQM40.155R11 is designed to operate in temperatures ranging from -10 to 40 degrees Celsius, making it suitable for use in various industrial applications. It is also compliant with various international safety standards, including UL, CSA, and VDE, ensuring safe and reliable operation.
In summary, the Siemens SQM40.155R11 is a high-performance and reliable industrial contactor with a current capacity of 40 amperes and a voltage rating of 230 volts. It features a robust and compact design, quick and reliable switching, and built-in overload protection, making it suitable for various industrial applications. Its compliance with international safety standards ensures safe and efficient operation.
The Siemens SQM40.155R11 (also known as the SQM40155R11) is a variable speed drive (VSD) or adjustable frequency drive (AFD) produced by Siemens. VSDs are electrical drives that control the speed and torque of an electric motor. The following are some potential pros and cons of purchasing a Siemens SQM40.155R11:
Pros:1. Energy efficiency: VSDs can save energy by adjusting motor speed to match process requirements, reducing energy waste and saving on electricity costs.
2. Improved motor performance: VSDs can provide better motor protection and extended motor life by controlling the motor's starting and stopping, and adjusting the torque and speed to match the load.
3. Process control: VSDs can provide precise control of motor speed and torque, resulting in improved process accuracy and consistency.
4. Flexibility: VSDs can be used in a variety of applications and industries, making them a versatile investment for businesses.
5. Reduced maintenance: VSDs can reduce maintenance costs by reducing the number of motor starts and stops, which can lead to premature wear on motors and other components.
6. Compatibility: The Siemens SQM40.155R11 is compatible with a wide range of motors and applications, making it a flexible and versatile choice for businesses.
Cons:1. Initial investment: The upfront cost of purchasing a VSD can be high, especially for larger motors or complex applications.
2. Complexity: VSDs can be more complex to install and operate than traditional AC motors, requiring specialized knowledge and training.
3. Potential for harmonic distortion: VSDs can generate harmonic distortion, which can cause problems with electrical systems and other equipment. Proper filtering and harmonic mitigation measures may be necessary.
4. Potential for overload: VSDs can be susceptible to overloads, which can damage the drive or motor. Proper sizing and protection measures are necessary to prevent overloads.
Conclusion:The Siemens SQM40.155R11 variable speed drive offers numerous benefits, including energy savings, improved motor performance, process control, flexibility, and reduced maintenance. However, it also comes with some potential drawbacks, such as a high initial investment, complexity, potential harmonic distortion, and susceptibility to overloads.
Recommendation:If your business requires precise motor speed and torque control, improved energy efficiency, and reduced maintenance costs, then the Siemens SQM40.155R11 variable speed drive may be a worthwhile investment. However, it is important to carefully consider the potential costs and complexities involved, and to ensure that proper installation, sizing, and protection measures are implemented to maximize the benefits of the drive and minimize any potential drawbacks. Additionally, consulting with a qualified electrical engineer or VSD expert can help ensure that the drive is selected and installed correctly for your specific application.
Details:
Siemens SQM40.155R11 / sqm40155r11 brand new, no box.
specifications maxohvac:
- brand: Siemens
- mpn: Sqm40.155r11
- part type: Hvac
seller maxohvac:
- city: wood ridge, illinois
- rating: 100.0%
- # reviews: 202
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
returns maxohvac:
- policy: no returns
payments maxohvac:
- credit card: visa
- other
- wallet: google-pay
shipping maxohvac:
- service: usps ground advantage, ups ground saver, fedex ground economy
- carrier: usps, ups, fedex
- transit: 5-11 days
- class: standard, economy
- type: calculated
offer maxohvac:
- sold #: 16
- availability: in stock
- options: ship-to-home
- prices: $570.00–$944.65
- item condition:
- New – Open box
- New
- in stock #: 5
- started: december 25, 2025
- best offers: true
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