SQUARE D Thermal Unit, Class 20, B45.0
SQUARE Electrical.
SKU 3G-OTH-43127
Also listed as: B450 · B45 0 · B45-0
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.
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Product Description
SQUARE Electrical.
Frequently Asked Questions
What is the SQUARE D B45.0 thermal unit used for?
The SQUARE D B45.0 thermal unit is an overload relay heater element designed for motor protection in industrial electrical panels. It provides Class 20 trip protection, meaning it will trip within 20 seconds at 600% of rated current, preventing motor damage from sustained overloads.
What are the specifications of the SQUARE D B45.0 thermal unit?
The SQUARE D B45.0 thermal unit has manufacturer part number B45.0 and is rated for Class 20 trip protection. It is a thermal overload heater element used with SQUARE D motor starters to protect motors from overheating due to overload conditions.
Where to buy SQUARE D B45.0 thermal units worldwide?
3G Electric supplies the SQUARE D B45.0 thermal unit to customers worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.
How to select the correct SQUARE D thermal unit for a motor?
Select the SQUARE D thermal unit by matching the heater element's trip class and current rating to your motor's full-load amperage. The B45.0 is a Class 20 unit; verify the motor nameplate FLA and ambient temperature. Consult the SQUARE D selection table for the correct heater size.
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.