The TM-D provides L (thermal overload) and I (magnetic short-circuit) protection curves — no electronic adjustment, no earth-leakage module. That means it can safely interrupt a fault current up to 70 kA at 415 V without failing; if your available fault current at the panel exceeds that, you need a higher-rated frame (the NSX250H frame this sits in is the same mechanical platform as the 250 A version, just with a 160 A trip unit fitted).
Dimensions are 161 mm height, 105 mm width, 86 mm depth — fits standard panel layouts for 3-pole MCCBs in the 160 A class. The toggle control provides manual on/off operation with visible contact position indication.
The electrical durability is rated at 20,000 cycles at 440 V In/2, and 10,000 cycles at 440 V In — sufficient for distribution duty where switching frequency is low. Power dissipation per pole is 11.78 W, so total heat load for the 3-pole breaker at rated current is approximately 35.3 W — factor this into enclosure thermal calculations.