What the 70 kA @ 415 V means for your panel
The Siemens 3VA1132-6EF32-0AB0 is a 3-pole IEC molded-case circuit breaker on the 160 A frame, fitted with a TM240 ATAM thermal-magnetic trip unit. Its headline rating — Icu = 70 kA at 415 V — places it in breaking capacity class H, meaning it can safely interrupt a fault current of 70,000 A without self-destruction. That is the figure that governs selectivity with upstream switchgear: if your facility's prospective short-circuit current at the panelboard exceeds 50 kA, this breaker gives you the headroom to coordinate without cascading a trip all the way back to the main.
Trip settings and protection range
The TM240 unit is adjustable: overload protection (Ir) spans 22 A to 32 A, and short-circuit protection (Ii) is set at 5 to 10 times In — so between 160 A and 320 A for the magnetic pickup. That wide Ii range lets the commissioning engineer tune for motor inrush or transformer energization without nuisance tripping, while the thermal element handles the continuous load curve. The nut keeper kit and two auxiliary switches (HP) are factory-fitted, saving a panel-builder step.
Integration into the panel
Mounts on a standard DIN rail or can be screw-fixed to a backplate. The 160 A frame occupies roughly the same footprint as the 250 A frame in the same series, so if you are retrofitting into an existing enclosure, verify the gland-plate clearance for the outgoing terminals. The auxiliary switches are pre-wired to a common terminal block; no additional wiring of microswitches is needed.