Engineered for commercial and industrial applications, the JJA36175 is a 3-pole MCCB from Square D's PowerPacT J-Frame lineup. It features a thermal-magnetic trip unit with long-time and instantaneous (LI) protection functions. This breaker installs into Square D I-Line panelboards and switchboards. It serves as an upgrade for legacy KC36175 and KH36175 breakers. Rated for 175A, it provides a 65kAIC interrupting rating at 480V. The unit includes a Visi-Trip indicator and is HACR rated.
Is the JJA36175 rated for 100 percent continuous current?
No, the Square D JJA36175 carries a standard 80 percent continuous current rating [1.1.5]. For typical continuous duty applications, the maximum continuous load on this 175-amp breaker should not exceed 140 amps.
Can I adjust the trip settings on the JJA36175 breaker?
The thermal overload protection is fixed at 175 amps, but the instantaneous magnetic trip is adjustable. You can adjust the magnetic short-circuit response from a low setting of 875A up to a high setting of 1750A to coordinate properly with your electrical system.
Which older Square D circuit breakers does the JJA36175 replace?
This PowerPacT J-Frame circuit breaker serves as a direct upgrade and replacement for legacy Square D KC36175 and KH36175 breakers. It installs seamlessly into existing Square D I-Line panelboards and switchboards.
What is the phase connection configuration for this I-Line breaker?
The JJA36175 is factory configured for a standard ABC phase connection. The plug-on jaw connection attaches directly to the ABC bus bar configuration standard in Square D I-Line distribution equipment.
What are the torque specifications for the load side lugs on the JJA36175?
The standard mechanical load side lugs require a 5/16-inch hex bit torque wrench. When terminating your 4 AWG to 4/0 AWG copper or aluminum conductors, the lugs must be torqued to 225 lb-in to ensure a secure and compliant connection.
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Review summary
Customers rate this product 4.5 out of 5 based on 2 reviews.