The 108 mm width (12 module pitches at 9 mm) and 137 mm height fit standard DIN-rail enclosures, though the backplate mount means you'll need a separate DIN adapter or panel cut-out. IP40 front face suits clean indoor panels; not rated for washdown. Everlink terminals accept 2.5–95 mm² rigid or stranded aluminium/copper on the line side, 2.5–70 mm² flexible copper on the load side — strip length and torque per the terminal marking.
The TM-D trip unit is fixed thermal-magnetic — no interchangeable trip block, no electronic adjustment. The 40 A fixed setting at 40 °C is the rating; derate above 40 °C per the thermal curve. Compare with the electronic Micrologic trip units in the same NSXm family if you need adjustable protection or earth-leakage add-ons.
Pollution degree 3 (IEC 60664-1) means it handles conductive pollution typical in industrial panels. Electrical durability: 20,000 cycles at 440 V In/2, 10,000 cycles at 440 V In. Mechanical durability: 20,000 cycles. The green flag on the front signals presence of auxiliary contacts — useful for remote status monitoring.