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SQUARE D Thermal Unit: 20 Trip Class (MPN B3.00) - Electrical
SQUAREElectrical

SQUARE D Thermal Unit: 20 Trip Class (MPN B3.00)

SQUARE Electrical.

SKU 3G-OTH-40625

Also listed as: B300 · B3 00 · B3-00

Brand
SQUARE
Item
D Thermal Unit: 20 Trip Class
Category
Electrical
UNSPSC
39121029 — Isolation transformer
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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

Technical Specifications

SQUARE
Manufacturer Part Number
B3.00

Technical Documents

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SQUARE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

SQUARE Electrical.

Frequently Asked Questions

What is a SQUARE D Thermal Unit B3.00 used for?

The SQUARE D Thermal Unit B3.00 is a 20 Trip Class overload relay heater element used in motor starters to protect motors from sustained overcurrent. It is commonly applied in industrial motor control panels, conveyors, pumps, and HVAC equipment where precise thermal protection is required.

What are the specifications of the SQUARE D Thermal Unit B3.00?

The SQUARE D Thermal Unit B3.00 has manufacturer part number B3.00 and is rated for 20 Trip Class operation. It is designed for use with SQUARE D motor starters and overload relays to provide thermal protection. Always verify compatibility with your specific starter model before installation.

Where to buy SQUARE D Thermal Unit B3.00 worldwide?

3G Electric supplies the SQUARE D Thermal Unit B3.00 to customers worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this part.

How to install a SQUARE D Thermal Unit B3.00?

To install the SQUARE D Thermal Unit B3.00, first disconnect all power to the motor starter. Remove the existing thermal unit by pressing the release tab and sliding it out. Insert the new B3.00 unit into the correct slot until it clicks securely. Reconnect power and verify trip settings per motor nameplate.

Used in

Common applications for SQUARE
Industrial power distribution — Square D HU362AWC non-fusible safety switch for disconnecting three-phase loads up to 60 A.
Busway branch circuits — Square D PQ4203G fusible bus plug for overcurrent protection in I-Line busway systems.
Panelboard surge protection — Square D HL4IMA24C SPD for transient voltage suppression in 277/480V AC wye systems.
Power distribution in control panels — Square D 9080LBA263106 open distribution block for splitting 400 kcmil conductors.
Machine control stations — Square D 9001BG303 push-button station for open/close/stop operations in industrial machinery.
Motor starting and protection — Square D 8536SBG2V02H30S NEMA starter for non-reversing three-phase motor control up to 18 A.

SQUARE 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.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
HUBBELL Receptacle: Quad, 5-20, Brown, 125V AC, 20 A, 2 Pole / 3 Wire (MPN HBL420)
HUBBELL
HUBBELL Receptacle: Quad, 5-20, Brown, 125V AC, 20 A, 2 Pole / 3 Wire (MPN HBL420)
HUBBELL Receptacle: Quad, 5-20, White, 125V AC, 20 A, 2 Pole / 3 Wire (MPN HBL420W)
HUBBELL
HUBBELL Receptacle: Quad, 5-20, White, 125V AC, 20 A, 2 Pole / 3 Wire (MPN HBL420W)
HUBBELL Receptacle: Quad, 5-20, Ivory, 125V AC, 20 A, 2 Pole / 3 Wire (MPN HBL420I)
HUBBELL
HUBBELL Receptacle: Quad, 5-20, Ivory, 125V AC, 20 A, 2 Pole / 3 Wire (MPN HBL420I)
HUBBELL Receptacle: Duplex, 5-20, White, 125V AC, 20 A, 2 Pole / 3 Wire (MPN BR20STWTR)
HUBBELL
HUBBELL Receptacle: Duplex, 5-20, White, 125V AC, 20 A, 2 Pole / 3 Wire (MPN BR20STWTR)
HUBBELL Receptacle: Quad, 5-20, Ivory, 125V AC, 20 A, 2 Pole / 3 Wire (MPN HBL420IS)
HUBBELL
HUBBELL Receptacle: Quad, 5-20, Ivory, 125V AC, 20 A, 2 Pole / 3 Wire (MPN HBL420IS)
HUBBELL Receptacle: Single, 14-20, Black, 125/250V AC, 20 A, 3 Pole / 4 Wire (MPN HBL8410)
HUBBELL
HUBBELL Receptacle: Single, 14-20, Black, 125/250V AC, 20 A, 3 Pole / 4 Wire (MPN HBL8410)

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