SQUARE D Thermal Unit: 20 Trip Class, B0.81
SQUARE Electrical.
SKU 3G-OTH-43930
Also listed as: B081 · B0 81 · B0-81
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
SQUARE Electrical.
Frequently Asked Questions
What is the SQUARE D Thermal Unit B0.81 used for?
The SQUARE D Thermal Unit B0.81 is an overload protection device used in motor starters and contactors. It protects motors from damage due to prolonged overcurrent by tripping the circuit when excessive heat is detected. Common applications include industrial machinery, conveyors, pumps, and HVAC systems.
What are the specifications of the SQUARE D Thermal Unit B0.81?
The SQUARE D Thermal Unit B0.81 has a trip class of 20 and a manufacturer part number of B0.81. It is designed for use with SQUARE D motor starters and contactors. The trip class indicates the maximum time in seconds the unit can withstand a locked-rotor current before tripping.
Where to buy SQUARE D Thermal Unit B0.81 worldwide?
You can source the SQUARE D Thermal Unit B0.81 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide competitive pricing and reliable sourcing for this SQUARE D component.
How to select the correct SQUARE D thermal unit for a motor?
To select the correct SQUARE D thermal unit, match the motor's full-load current (FLC) to the unit's ampere rating, such as the B0.81. Ensure the trip class (e.g., 20) aligns with the motor's starting characteristics. Consult the motor nameplate and SQUARE D selection tables for proper sizing to avoid nuisance tripping or inadequate protection.
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.
