TKMA3Y1200 | GE Automatic K-Frame Circuit Breaker for Industrial Use

Product Description

The GE TKMA3Y1200 is a high-performance 3-pole molded case circuit breaker designed for industrial and commercial electrical systems. Rated at 1200 A with 600 V maximum, it provides robust protection against overloads and short circuits. Moreover, its thermal magnetic trip unit ensures reliable fault detection and immediate interruption of electrical faults. Therefore, operators can rely on consistent protection for critical power distribution applications. The feed-thru design simplifies installation, while heavy-duty K-frame construction guarantees durability and long-term service in demanding environments. Although discontinued by the manufacturer, Radwell provides a 2-year warranty for added peace of mind.

Technical Specifications

Manufacturer: General Electric (GE)
Model / Part Number: TKMA3Y1200
Product Type: Molded Case Circuit Breaker (Thermal Magnetic)
Frame Type: K-Frame (K1200 family)
Poles: 3 (Three-phase configuration)
Amperage Rating: 1200 A
Voltage Ratings:

• AC: 240 / 480 / 600 VAC

• DC: 250 VDC
  Interrupting Ratings (UL):

• 42 kA at 240 VAC

• 30 kA at 480 VAC

• 22 kA at 600 VAC
  Trip Unit: Thermal Magnetic
  Connection Type: Feed-thru with line and load lugs
  Dimensions: 330 × 280 × 25 mm
  Weight: 32.41 lbs (14.7 kg)
  Mounting: Panel or enclosure installation
  

FAQ

Q: What is the amperage rating of the TKMA3Y1200?
The breaker is rated for 1200 A in three-phase configurations.

Q: Which voltages does it support?
It supports AC voltages up to 600 V and DC voltage up to 250 V.

Q: What type of trip unit does it use?
The breaker uses a thermal magnetic trip unit for overload and short-circuit protection.

Q: Can it be installed in a standard panel?
Yes, the feed-thru design allows versatile panel or enclosure mounting.

Q: Is the TKMA3Y1200 still supported by the manufacturer?
It is discontinued by GE, but Radwell provides a 2-year warranty for replacement assurance.