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B3.70 - Square D Overload Heater

Item # Condition Our Price Availability  
B3.70 New

15 In stock

B3.70-R Re-Certified

1 In stock


B3.70 - Square D Overload Heater

Specifications :
• Manufacturer : Square D
• Cat. No. : B3.70
• Alternate Part No. : B370
• Product Type : Overload Heater
• UPC : 785901587385
• Sensing Method : Melting Alloy
• Full Load Amps : 2.51 to 3.30
• FL Amp @ 3-Ph/ Size 00,0,1/ Standard Enclosure2.51
• FL Amp @ 1-Ph/ Size 00,0,1/ Open & Large Enclosure2.83
• FL Amp @ 1-Ph/ Size 1P/ Open & Large Enclosure2.99
• FL Amp @ 1-Ph/ Size 00,0,1/ Standard Enclosure2.72
• FL Amp @ 1-Ph/ Size 1P/ Standard Enclosure2.99
• FL Amp @ 3-Ph/ Size 00,0,1/ Open & Large Enclosure2.60
• FL Amp @ 1-Ph/ DP 20-30A/ Standard Enclosure3.19
• FL Amp @ 1-Ph/ DP 40A/ Standard Enclosure3.30
• FL Amp @ 3-Ph/ DP 20-30A/ Standard Enclosure2.87
• Mounting : Plug in
• Reset Type : Manual
• Trip Type : Standard Trip
• Motor Fla 2.41 To 1093 Ampere (1 Thermal Unit), 2.41 To 3.03 Ampere (2 Thermal Unit), 2.2 To 3.15 Ampere (3 Thermal Unit)
• 7, 8 Nema Size
• Plug In Mounting
• Used On Type Dpsg-12/Dpsg-13/Dpso-12/Dpso-13 20 Ampere, Dpsg-42/Dpsg-43 40 Ampere Starter, Type J/K Starter
• Authentic Square D Product.

Same Day Shipping with UPS Ground

We strive to ship out your items the same day the order is placed, to help us accomplish this please refer to the following deadlines:

  • Orders over the phone must be called in by 4pm EST
  • Online through our online store must be placed by 4pm EST
Same Day Shipping for Expedited Orders

Orders being sent via 2 Day Shipping, 3 Day Business Shipping, and Next Day Air must be received by 3pm EST

*For Hawaii & Alaska destinations

All orders for Hawaii and Alaska have a $200 minimum and addition shipping applies. If you need to place an order to one of these locations please call our sales department at 1-866-809-9078.

*SuperBreakers does not ship on customer accounts.

Customers purchasing a new Square D B3.70 from SuperBreakers will receive a new, current vintage product obtained from authorized distributors. On occasion, a new surplus or new out of box B3.70 may be shipped where items are deemed to be unenergized and never wired. All new products will carry a 1-year warranty from SuperBreakers.


Re-Certified Square D B3.70's are offered by SuperBreakers as a way to save over the cost of purchasing new. These Square D products benefit from a highly selective process where they are cleaned, tested and repackaged to the highest standard by our technicians.

All Re-Certified B3.70's from SuperBreakers are priced aggressively and carry a 2-year warranty to assure our customers guaranteed operation without interruption of service. Please note that we cannot guarantee current vintage or "like-new" condition on these items.

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B3.70 - Square D Overload Heater

B3.70 - Square D Overload Heater