SQUARE B1.88 Thermal Unit, 20 Trip Class
SQUARE Electrical.
SKU 3G-OTH-38841
Also listed as: B188 · B1 88 · B1-88
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Product Description
SQUARE Electrical.
Frequently Asked Questions
What is the SQUARE D B1.88 thermal unit used for?
The SQUARE D B1.88 thermal unit is an overload relay heater element designed for motor protection in industrial electrical panels. It trips when current exceeds the rated threshold, preventing motor damage from overcurrent conditions. Common in manufacturing, HVAC, and pumping systems.
What are the specifications of the SQUARE D B1.88 thermal unit?
The SQUARE D B1.88 thermal unit has a trip class of 20 and manufacturer part number B1.88. It is a bimetallic overload relay heater element used with SQUARE D motor starters. The trip class indicates the maximum time in seconds to trip at 600% of rated current.
Where to buy SQUARE D B1.88 thermal units worldwide?
3G Electric supplies the SQUARE D B1.88 thermal unit worldwide. As a global industrial distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this motor protection component.
How to select the correct SQUARE D thermal unit for a motor?
Select the SQUARE D thermal unit by matching the heater element's current rating to the motor's full-load amperage. The B1.88 is a trip class 20 unit, suitable for standard motor starting. Always consult the motor nameplate and SQUARE D selection tables to ensure proper overload protection.
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3G Electric supplies SQUARE electrical. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.