Square D I-Line Circuit Breaker LJA36600U44X YH2 600A S432575 Transformer

Square D I-Line Circuit Breaker LJA36600U44X YH2 600A S432575 TransformerThe Square D PowerPact LJA36600U44XYH2 is a high quality circuit breaker with a maximum amperage of 600A. This product, along with the S432575 external neutral transformer, is designed for use in electrical systems requiring reliable and efficient power distribution. As a trusted brand in the industry, Square D ensures that this circuit breaker is built to last and provide reliable performance for industrial and commercial applications. LJA LJ frame

The Square D PowerPact LJA36600U44XYH2 is a high-quality circuit breaker with a maximum amperage of 600A. This product, along with the S432575 external neutral transformer, is designed for use in electrical systems requiring reliable and efficient power distribution. As a trusted brand in the industry, Square D ensures that this circuit breaker is built to last and provide reliable performance for industrial and commercial applications.

LJA

• LJ frame molded-case circuit breaker

• A = AC rated

• Industrial / heavy-duty series (older but very common)

3

• 3-pole breaker

6600

• 600 amp continuous rating

• LJ frame maxed out (big boy breaker)

U

• Thermal-magnetic trip unit

• Fixed trip (not electronic)

44

• Interrupting rating code

• Typically 42–65 kA @ 480 VAC (exact value depends on CAT spec sheet, but this is a high-interrupt industrial rating)

X

• Special accessory or factory modification

• Often shunt trip / auxiliary contacts / special terminals (varies by order)

Y

• Additional factory option

• Could be alarm switch, modified lugs, or custom calibration

H2

• Internal revision / design version

• Not usually relevant for field replacement unless matching exact vintage