Its interrupting capacity reaches 187 kA at 240 V, 121 kA at 415 V, and 76 kA at 440 V — figures that place it in the high-breaking-capacity tier for industrial distribution panels. This is a line-protection version, meaning the TM240 release is calibrated for cable and busbar protection rather than motor or generator circuits.
Current derating across the operating range
The 160 A rating holds flat from 40 °C through 50 °C, then derates gradually: 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C. This thermal curve is typical for a TM release with a 40 °C calibration reference. In a panel with ambient above 50 °C — a common condition in non-climate-controlled enclosures near ovens or in direct sun — the effective ampacity drops by roughly 6% at 70 °C. Factor this into the load schedule rather than relying on the nameplate 160 A.
The breaker measures 130 mm in height and 3 inches in width, fitting standard 3-pole MCCB mounting footprints in SENTRON distribution boards and third-party enclosures with adjustable DIN-rail or bolt-on adapters.