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ABB / General Electric THFK236150WL Molded Case Circuit Breaker

  • 150A
  • 3 Pole
  • Unit Mount
ABB / General Electric THFK236150WL
Molded Case Circuit Breaker
Brand ABB / General Electric
SKU THFK236150WL
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  • 150A
  • 3 Pole
  • Unit Mount

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General Electric THFK236150WL 3 Pole Circuit Breaker

ABB / General Electric THFK236150WL - 150A 3 Pole Molded Case Circuit Breaker

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$513.85 In Stock

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Description

Part of the legacy F-Frame family, this 150-amp molded case circuit breaker delivers robust long-time and instantaneous trip functions. The unit features an adjustable magnetic trip mechanism to fine-tune short-circuit response. Designed for unit mount installations, the device integrates into GE A-Series panelboards and motor control centers. For modern upgrades, this model is replaced by the ABB Tmax XT4 series.

Specifications

Key specifications
Brand ABB / General Electric
Part Number THFK236150WL-R
Series THFK
Amperage 150A
Poles 3
Mounting Style Unit Mount
Voltage 240VAC, 480VAC, 600VAC, 250VDC
Phase 3
AIC Rating 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 10kA @ 250VDC
Fit and installation
Frame Type TFK
Terminal Type Lugs
For Use With GE A-Series Panelboards, Switchboards, Motor Control Centers, Enclosures
Wire Gauge 4 AWG - 300 kcmil (Cu/Al)
Max Wire 300 kcmil
Min Wire 4 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Adjustable Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch
Accessories Line and Load Lugs (TCAL24)
Standards CSA C22.2 No. 5, HACR Rated, NEMA AB 1, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Interchangeable Trip, High Interrupting Capacity

Product FAQs

5 answers
How is the THFK236150WL mounted in electrical distribution equipment?

This is a unit mount, feed-thru circuit breaker. It bolts directly to the backpan or chassis in GE A-Series panelboards, switchboards, and motor control centers rather than plugging onto a bus system.

What does the "WL" suffix in the THFK236150WL catalog number indicate?

The "WL" suffix designates that the breaker ships with factory-installed line and load lugs. These lugs accommodate copper or aluminum conductors ranging from 4 AWG to 300 kcmil.

How does the adjustable magnetic trip function work on this breaker?

While the thermal element provides fixed long-time overload protection, the adjustable magnetic element allows electricians to fine-tune the instantaneous short-circuit trip threshold to coordinate with downstream devices or specific load inrush currents.

What is the difference between GE TFK and THFK circuit breakers?

Both are built on the legacy GE F-Frame platform, but the THFK is the "Hi-Break" version. The "H" indicates a higher interrupting capacity (AIC rating) compared to standard TFK breakers.

Why might this breaker be labeled as either ABB or General Electric?

ABB acquired GE Industrial Solutions in 2018. Depending on the manufacturing date, this F-Frame breaker may feature either ABB or GE branding, but the physical dimensions, fit, and function remain identical.

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