It's built for line protection — meaning it sits upstream of a feeder or distribution bus, not on a specific motor or load. The TM240 release gives you a fixed thermal pickup and a magnetic trip that's adjustable across a range; the '240' designates the frame size and trip unit family.
Ratings that matter for fit
Above that, it drops to 155.6 A at 55 °C and 142.4 A at 70 °C. The auxiliary contact version is 2 auxiliary switches HQ (high-quality, high-reliability contacts).
Dimensions are 105 mm wide, 158 mm high, 70 mm deep.