SQUARE D Thermal Unit: 20 Trip Class, B11.5
SQUARE Electrical.
SKU 3G-OTH-39742
Also listed as: B115 · B11 5 · B11-5
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
SQUARE Electrical.
Frequently Asked Questions
What is a Square D B11.5 thermal unit used for?
The Square D B11.5 thermal unit is a Class 20 overload relay heater element used in motor starters to protect motors from overheating due to sustained overloads. It is commonly applied in industrial control panels, conveyors, pumps, and HVAC equipment where reliable thermal protection is required.
What are the specifications of the Square D B11.5 thermal unit?
The Square D B11.5 thermal unit has a trip class of 20 and is designed for use with Square D motor starters. The manufacturer part number is B11.5. It provides accurate thermal overload protection by heating a bimetal strip that trips the starter when current exceeds the rated threshold.
Where to buy Square D B11.5 thermal units worldwide?
3G Electric supplies Square D B11.5 thermal units to customers worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this overload relay heater element.
How to select the correct Square D thermal unit for a motor starter?
To select the correct Square D thermal unit, match the motor full-load current (FLA) to the heater element's current range. The B11.5 is a Class 20 unit suitable for standard motor starting. Always consult the motor nameplate and Square D selection tables to ensure proper overload protection without nuisance tripping.
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.
