That makes it a straight drop-in for a 100 A feeder or motor branch circuit in a 480 V panel, where many breakers start to lose capacity above 40 °C. Its adjustable thermal-magnetic trip unit covers 150 A to 1 200 A, so it can be tuned to protect a specific load — a 200 A compressor or a 600 A main — without swapping the breaker body. The 3-pole construction suits three-phase systems common in industrial distribution.
Interrupting ratings and fault clearing
The interrupting capacity is 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. Maximum power loss is 13.5 W, which keeps heat rise low in a crowded enclosure.
The 3-pole body occupies three 18 mm pole spaces; verify the existing bus-stab pattern if retrofitting into an older panel.