Siemens 3VA2063-5HL36-0CL0 — SENTRON MCCB, 63 A, 3-Pole, Line Protection
The Siemens 3VA2063-5HL36-0CL0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient range of -25 °C to 70 °C, with no derating required up to 70 °C. It is a 3-pole unit designed for line protection, meaning its internal trip curve is calibrated for cable and busbar protection rather than motor or generator protection. The interrupting ratings are substantial: 187 kA at 240 V AC, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3 kA at 690 V — so it handles high-fault utility feeds without cascading upstream breakers. This breaker ships with an undervoltage release (UVR) integrated — the UVR trips the breaker when line voltage drops below a set threshold, which is standard for applications where a loss of control voltage must shut down downstream loads (e.g., conveyor safety circuits, pump sequencing panels). The auxiliary switch complement is factory-configured: two auxiliary switches (typically N.O./N.C. for status feedback), one trip alarm switch, and one electrical alarm switch (HQ). That gives four separate signal paths for PLC or SCADA monitoring without adding external interposing relays. Dimensions are 105 mm wide by 181 mm tall by 86 mm deep — a standard 3-pole MCCB footprint for the SENTRON 3VA2 frame. Panel cutout and busbar spacing match the 3VA2 family; if you are replacing a 3VA1 or 3VA0 unit, check the mounting hole pattern because the 3VA2 frame is slightly wider than the 3VA1.
What the Ratings Mean for Your Panel
The 63 A continuous rating is flat across the entire operating temperature range — no derating curve to watch for. The adjustable thermal-magnetic trip unit (implied by the 95 A minimum and 756 A maximum range) allows the breaker to be set for cable protection at the lower end or for a specific overload threshold. The 187 kA interrupting capacity at 240 V means this breaker can be installed on a utility transformer secondary or a high-fault industrial bus without worrying about series rating with downstream breakers. The 3 kA at 690 V is the limit for the few 690 V line-to-line systems (some mining and marine plants); for most 400/480 V panels, the 121 kA rating is the one that matters. The undervoltage release is a factory-installed option on this order code — not a field-addable kit. If your BOM requires a UVR, this exact code is the one; the base 3VA2063-5HL36-0AA0 (without UVR) is a different variant. The auxiliary switch configuration (2 aux + 1 trip alarm + 1 electrical alarm HQ) provides four isolated contacts for status feedback, which is more than the standard 1 aux + 1 alarm found on many MCCBs. That extra alarm contact (HQ) is typically wired to a separate alarm annunciator or a safety PLC input.