Skip to content
Product Not Available
** Picture is for identification purposes only and may not represent the actual amperage of the product listed **

HKA3150T - 150Amp Trip Unit

  • 150 Amp
  • 3 Pole
Circuit BreakersSKU: HKA3150T [NS]

Purchase Options: New Surplus

HKA3150T - 150Amp Trip Unit Description

HKA3150T - 150Amp Trip Unit

The HKA3150T molded-case circuit breaker trip unit is a 150-amp replacement component for compatible HKA frame breaker systems. It’s commonly used in maintenance and repair work where the goal is to keep existing electrical equipment in service. Instead of replacing an entire breaker assembly, this trip unit lets you match the original setup and keep things running as intended.

Designed for three-pole HKA frames, the HKA3150T features a thermal-magnetic trip design with an adjustable magnetic range. In practical terms, that means it responds to both overload and short-circuit conditions while still giving flexibility within its rated settings.

Key Features and Benefits

  • 150 Amp Rating: Matches systems that require a 150-amp trip unit
  • HKA Frame Fit: Designed specifically for compatible HKA molded case breaker frames
  • 3-Pole Design: Works with three-phase electrical systems
  • Thermal Magnetic Operation: Responds to overloads and short circuits
  • Adjustable Magnetic Range: 750–1500 A setting range for application flexibility
  • Replacement Use: Helps maintain existing breaker assemblies without redesigning the system

Technical Specifications

  • Catalog Number: HKA3150T
  • Product Type: Molded Case Circuit Breaker Trip Unit
  • Circuit Breaker Type: HKA
  • Frame Type: J Frame
  • Trip Type: T207
  • Amperage Rating: 150 A
  • Voltage Rating: 600 VAC
  • Number of Poles: 3
  • Trip Rating: 750–1500 A
  • Dimensions:
    • Length/Depth: 7.4 in.
    • Height: 5.1 in.
    • Width: 5.2 in.
  • Weight: 2.1 lbs.

Material Compliance and Certifications

The HKA3150T is UL Listed and intended for use in compatible molded case circuit breaker assemblies. Installation should always follow applicable electrical codes and equipment guidelines.

Where It Works Best

This trip unit is commonly used in commercial buildings, industrial facilities, and maintenance environments where HKA frame breakers are already in place. It’s a practical choice for service work where the goal is to keep existing electrical systems operating without changing the original design.


Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.

Eaton®, Cutler-Hammer®, Westinghouse®, Challenger®, Bussmann®, Edison®, Edison Fuse®, GTE Sylvania®, Crouse-Hinds®, and Cooper® are registered trademarks of Eaton Corporation plc. Products sold are surplus, used, or refurbished and are NOT supplied by Eaton Corporation plc or its affiliates.

Specifications

  • Width:4.0
  • Height:5.13
  • Depth:3.5
  • Poles:3
  • Amperes:150
  • Type:HKA
  • Sub-Category:TRIP UNIT
  • Approx Dimensions:4.00"W x 5.13"L x 3.50"D
  • Additional Notes:Thermal Magnetic Only for KA & HKA Frames Magnetic Hi-Low Trip Setting Range: 750-1500. - discontinued by the Manufacturer

Returns are easy

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

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

Shipping charges are Prepaid and Allowed on UPS Ground orders for all other products on orders over $500.00, again only when shipping within the lower 48 continental United States, provided the product(s) can safely ship UPS Ground.

If the product cannot safely ship via UPS Ground, or is too heavy to ship UPS Ground, then the product will be shipped via freightliner at buyer's expense.

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 breaker orders over $100*

100k+ Happy Customers

4.9 Google rating

Secure Shopping

Feel protected with every transaction