Skip to content
  • Product Image of THJK426300WL - 300A Circuit Breaker #1
** Picture is for identification purposes only and may not represent the actual amperage of the product listed **
scroll for more

THJK426300WL - 300A Circuit Breaker

  • 300 Amp
  • 25k @ 600VAC; 35k @ 480VAC; 65k @ 240VAC
  • 2 Pole
Circuit BreakersSKU: THJK426300WL

Purchase Options:

THJK426300WL - 300A Circuit Breaker Description

THJK426300WL 300A Circuit Breaker

The THJK426300WL circuit breaker is a top-tier solution for ensuring the safety and efficiency of high-power electrical systems in industrial and commercial environments. As part of the J600 product line, this 2-pole, 300-ampere breaker is engineered to deliver exceptional performance and reliability. Its thermal magnetic design and interchangeable trip unit provide precise and responsive protection against overloads and short circuits, safeguarding your electrical infrastructure. The THJK426300WL is compatible with a wide range of voltages, up to 600V, making it an ideal choice for diverse and demanding applications.

Key Features and Benefits:

  • High Amperage Capacity: Rated at 300 amperes, this circuit breaker is suitable for high-power applications, ensuring robust performance and safety.
  • Interchangeable Trip Unit: Allows for flexibility and ease of maintenance, enabling quick replacements and adjustments to meet specific system requirements.
  • Thermal Magnetic Protection: Combines thermal and magnetic protection mechanisms for accurate and responsive circuit protection against overloads and short circuits.
  • Durable Construction: Engineered with high-quality materials, including Cu/Al line and load lugs, for reliable and secure connections.
  • Wide Voltage Compatibility: Suitable for various voltages, enhancing versatility for multiple industrial and commercial applications.

Technical Specifications:

  • Amperage: 300 A
  • Poles: 2
  • Frame Type: J600
  • Trip Style: Interchangeable
  • Trip Function: LI (Long Time and Instantaneous)
  • Voltage Compatibility: 120 Vac, 120/240 Vac, 125 Vdc, 240 Vac, 250 Vdc, 277 Vac, 480 Vac, 600 Vac
  • Interrupting Capacity: 120/240 Vac: 65 KAIC, 125 Vdc: 40 KAIC, 240 Vac: 65 KAIC, 250 Vdc: 40 KAIC, 277 Vac: 35 KAIC, 480 Vac: 35 KAIC, 600 Vac: 25 KAIC
  • Lugs: TC043, TCAL43, TCAL47
  • Continuous Current Rated: Standard
  • Suitable for Reverse Feed: No
  • UL File Number: E11592
  • CSA File Number: LR40350

Material Compliance and Certifications:

  • Compliance: The THJK426300WL circuit breaker meets rigorous industry standards for safety and performance. It is UL-listed and CSA certified, ensuring its quality and reliability in demanding applications. Featuring Cu/Al line and load lugs, this breaker offers durable and secure connections suitable for various environments.

Suitability:

  • The THJK426300WL circuit breaker is designed for use in industrial and commercial settings where robust and reliable power management is crucial. Its high interrupting capacity and wide voltage compatibility make it suitable for various applications, from manufacturing plants to large commercial buildings. The breaker‰۪s interchangeable trip unit and adjustable settings provide the flexibility needed to adapt to specific operational requirements, ensuring optimal performance and safety.

Specifications

  • Width:8.25
  • Height:10.13
  • Depth:3.81
  • Poles:2
  • Amperes:300
  • A.I.C. Rating & Volts:25k @ 600VAC; 35k @ 480VAC; 65k @ 240VAC
  • Type:THJK4
  • Approx Dimensions:8.25"W x 10.13"L x 3.81"D
  • Additional Notes:Q-Line, Cable-in/Cable-out (Lug-Lug), HACR Rated, Molded Case Circuit Breaker with Non-Interchangeable, Thermal Magnetic Trip Unit and Internal Common Trip. Includes Line and Load-Side Lugs

Returns are easy

You may return unused items within 30 days of delivery for a full refund.

FREE shipping on breaker orders over $100 and all other items with orders over $500.

CIRCUIT BREAKER SUPERSTORE® offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).

Same Day Shipping

We strive to ship out your items within one business day.

In rare circumstances, CIRCUIT BREAKER SUPERSTORE® may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.

CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).

Similar Products

Why Us?

Free Shipping

Free shipping on orders over $100

100k+ Happy Customers

4.9 Google rating

Secure Shopping

Feel protected with every transaction