SQUARE D Thermal Unit: 20 Trip Class, B3.70
SQUARE Electrical.
SKU 3G-OTH-42283
Also listed as: B370 · B3 70 · B3-70
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 a Square D thermal unit used for?
A Square D thermal unit, like the B3.70, is a replaceable heater element used in motor starters to protect motors from overload by sensing current and tripping the circuit. It is commonly applied in industrial motor control panels and HVAC systems.
What are the specifications of the Square D B3.70 thermal unit?
The Square D B3.70 thermal unit is a Class 20 trip class overload heater with manufacturer part number B3.70. It is designed for use with Square D motor starters and provides delayed tripping to accommodate motor starting inrush currents.
Where to buy Square D thermal units worldwide?
3G Electric supplies Square D thermal units like the B3.70 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this and other industrial electrical components.
How to select the correct Square D thermal unit for a motor?
To select the correct Square D thermal unit, match the motor full-load current (FLA) to the heater's trip curve. The B3.70 is a Class 20 unit, suitable for standard motors. Always consult the motor nameplate and Square D selection tables to ensure proper overload 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.
