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Cotek TR-40 Transfer switch for SP inverters

Cotek logo
  • Strict quality control
  • 25 years of experience in the Renewable Energy Field

Product Information

Model Part No. Description Size & Weight Price
Cotek TR-40 Transfer switch for SP inverters2915370Cotek TR-40 Transfer Switch for SP inverters8.66 × 7.64 × 2.8 in
2 lbs
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Item is not returnable.
Do you have questions about our Cotek inverter accessories, or questions about solar in general? Give us a call at 1-800-472-1142.


The Cotek TR-40 is a durable transfer switch designed to work specifically with Cotek SP series sine wave inverters. A transfer switch is used when there is a secondary AC source in a system. For example battery backup systems using the power grid and off-grid systems using a backup AC generator. A transfer switch is used to connect your AC input power (from grid or generator) to your loads. A Cotek CX battery charger can be used in the load panel for an inverter/charger installation which is the ideal setup for off-grid and battery backup.
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Features & Attributes

  • Dimensions (LxWxH): 8.66 × 7.64 × 2.8 inches
  • Weight: 2 lbs
  • High transfer speed
  • Low power consumption <1.4W
  • Easy to install and use
  • Universal AC input
  • Up to 40 amps bypass current
  • Works with SP-700/1000/1500/2000/3000/4000 inverters
  • Connects to SP series inverters via RJ-45 cable
  • MPN: TR-40
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Cotek TR-40 Transfer switch for SP inverters

Installation Manual
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About Cotek

Key Points

  • Strict quality control
  • 25 years of experience in the Renewable Energy Field

Established in 1986, COTEK Electronic is based in Taiwan and supplies quality DC/AC offgrid sinewave inverters for industrial, backup power, renewable energy and recreational applications. Cotek has grown leaps and bounds over the past 25 years and today it serves an ever-increasing global market.

Their success stems from a mission to offer a good price point without compromise to quality. With state of the art quality control and management systems in place, COTEK has achieved a product defect rate under 100ppm or less than 0.10% and are committed to cutting that number in half.

Behind every successful renewable energy company is a great Research & Development team. COTEK is no exception. Their R&D team includes eight electrical engineers with over twenty years of experience. Their combined expertise spans various aspects of electronics including High Voltage, High Power Transformer, Analog, Digital, Microprocessor, Linear and Switching Mode Technologies.

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