What this MCCB is and what it does
The Siemens SENTRON 3VA2216-6HK42-0AA0 is a 4-pole molded case circuit breaker (MCCB) in the 3VA2 series, designated for line protection. It carries a continuous rated current Iu of 160 A across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel sizing for warm enclosures. The electronic trip unit is an ETU340, a thermal-magnetic replacement that offers adjustable N-conductor protection (OFF, 50%, or 100% of the phase current). The rated insulation voltage Ui is 800 V, and the front face carries IP40 protection — suited for installation inside a switchboard or enclosure, not for open wet locations.
Breaking capacity — what the numbers mean for your system
This breaker is rated for 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 4.5 kA at 690 V. The steep drop at 690 V (4.5 kA) tells you the arc-chamber design is optimized for low-voltage distribution up to 500 V; at 690 V it still interrupts but the capacity is much lower — verify your fault current at that voltage level before specifying.
Sourcing and lifecycle status
The lifecycle stage is listed as current — this is a production part, not a phase-out or NRND line. It is available to quote against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.
Physical integration
The breaker measures 181 mm high, 140 mm wide, and 86 mm deep. It mounts into a panel or enclosure with standard MCCB cutout and bus-bar connections. The 4-pole design covers three-phase + neutral, with the N-conductor protection adjustable via the trip unit settings.