Need installation or engineering help?
Ask a question
Frequently Asked Questions
What is a Square D thermal unit B1.67 used for?
A Square D thermal unit B1.67 is a Class 20 overload relay heater element used in motor starters to protect motors from sustained overcurrent. It is designed for industrial applications requiring precise thermal protection, commonly found in manufacturing, HVAC, and pumping systems.
What are the specifications of the Square D thermal unit B1.67?
The Square D thermal unit B1.67 has manufacturer part number B1.67 and is a Class 20 trip class overload heater. It is designed for use with Square D motor starters to provide thermal overload protection. For exact ampere ratings and application details, consult the manufacturer's documentation.
Where to buy Square D thermal unit B1.67 worldwide?
3G Electric supplies the Square D thermal unit B1.67 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact our team to source this genuine Square D part for your motor protection needs.
How to select the correct Square D thermal unit for a motor?
Selecting the correct Square D thermal unit requires matching the heater's trip class and current rating to the motor's full-load amperage and starting characteristics. The B1.67 is a Class 20 unit, suitable for standard motor starting. Always verify the motor nameplate and consult Square D selection tables for proper sizing.
Used in
Common applications for SQUARESQUARE Products
3G Electric supplies SQUARE electrical. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















