The Siemens SENTRON 3VA2063-5HL36-0CA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current at ambient temperatures up to 70 °C without derating — the full 63 A holds from 40 °C through 70 °C. Breaking capacity reaches 187 kA at 240 V AC, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3 kA at 690 V.
The 63 A continuous rating is flat across the full 40–70 °C ambient range — no summer derating to track. That simplifies panel sizing: the breaker carries its nameplate current regardless of enclosure heat rise up to 70 °C. The 187 kA at 240 V is the highest interrupting rating on the voltage ladder; at common industrial distribution voltages (415/440 V) it still delivers 121 kA, which covers most transformer-fed fault levels below 2 MVA.
Undervoltage release and integration
No separate UVR module to purchase or wire. Power loss is 7.9 W maximum at rated current.