The Siemens 3VA1116-5ED42-0AA0-ZD00 is a 4-pole IEC frame 160 molded case circuit breaker from the 3VA1 series, configured for line protection with a fixed thermal-magnetic trip (TM210, FTFM). That class M rating puts it in the middle of the 3VA1 breaking capacity range, suitable for industrial distribution panels where fault currents are high but not extreme. The continuous current rating is In=160A with overload protection fixed at Ir=160A and short-circuit pickup fixed at Ii=10 x In (1600 A instantaneous). This variant includes a nut keeper kit and is specified for DC Power OEM applications in China.
The 4-pole configuration (3 phases + unprotected neutral) is common in three-phase distribution boards feeding downstream sub-distribution or directly powering equipment. The fixed thermal-magnetic trip means no adjustment dials — set it and forget it, which suits OEM builds where the load is known and consistent. The nut keeper kit simplifies panel wiring by retaining hardware during assembly.