IEC frame 160 MCCB with 36 kA @ 415 V — line protection, fixed TM210 trip
The Siemens 3VA1150-4GD42-0AA0-ZD00 is a 4-pole IEC frame 160 moulded-case circuit breaker rated for a breaking capacity class S with Icu=36 kA at 415 V. It carries a TM210 thermal-magnetic trip unit set at In=50 A fixed, with overload protection Ir=50 A fixed and short-circuit protection Ii=10 x In. The N-conductor is protected at 100 %, and a nut keeper kit is included for the DC Power OEM variant produced for the China market.
What the ratings mean for panel integration
The 36 kA Icu at 415 V certifies that this MCCB can safely interrupt fault currents up to that level without upstream cascading — critical for IEC 60947-2 compliance in distribution panels. The fixed 50 A thermal-magnetic trip (TM210) means no field-adjustable overload dial; the Ir and Ii are factory-set, so the part must be specified to the exact load current. The 4-pole configuration with 100 % N-conductor protection suits 3-phase + neutral systems where the neutral is not derated. The nut keeper kit aids DIN-rail or screw-mount panel assembly, typical for OEM builds.