The Siemens SENTRON 3VA2063-6HL32-0KC0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient temperature range of 40 °C to 70 °C — no derating needed up to that ceiling. Breaking capacity is the headline here: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3 kA at 690 V.
That simplifies panel thermal budgeting: if the enclosure ambient stays under 70 °C, the breaker delivers its full 63 A without adjustment. Two auxiliary switches HQ provide status feedback — open/closed indication to a PLC or SCADA. No undervoltage release is fitted on this variant, so a loss-of-control-voltage event will not automatically trip the breaker. Maximum power loss is 5.4 W — negligible for panel heat-load calculations, but worth noting if the breaker is in a sealed, high-density enclosure with other heat sources.
Deployment Context
As a line-protection MCCB, the 3VA2063-6HL32-0KC0 is intended for main or branch feeder protection in low-voltage distribution boards, motor control centers, and industrial switchgear. The 3-pole design suits three-phase systems up to 690 V, with breaking capacity that handles high-fault-current scenarios typical of industrial transformer secondaries. Panel integration: the 105 mm width and 86 mm depth fit standard SENTRON mounting patterns. The shunt trip and auxiliary switches are pre-configured at the factory — no field assembly of accessories required.