What it is and what it does
The Siemens SENTRON 3VA2163-5HN32-0AG0 is a 3-pole molded case circuit breaker rated for 63 A continuous current, designed for line protection in distribution panels. It delivers a 187 kA interrupting capacity at 240 V, tapering to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V — covering the full low-voltage fault spectrum from residential to industrial mains.
Breaking capacity — what the numbers mean for your panel
The 187 kA at 240 V means this MCCB can safely interrupt a fault current up to that level without welding contacts or venting gas into adjacent gear — critical for high-fault service entrances or transformer secondaries. At 415 V the 121 kA rating still exceeds most industrial switchboard SCCR requirements. The steep drop to 3.7 kA at 690 V is typical for a 63 A frame; if your system runs at 690 V, verify the available fault current stays under that threshold.
Thermal performance and operating range
The 63 A rating holds flat from 40 °C through 70 °C ambient — no derating needed across the typical panel interior temperature range. Maximum power loss is 4 W, which keeps heat rise low in a crowded enclosure. Operating temperature spans -25 °C to 70 °C; storage from -40 °C to 80 °C.
Integration notes
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — fits standard MCCB mounting footprints in Siemens SENTRON distribution panels and most third-party enclosures. The 3-pole design includes one auxiliary switch and one trip alarm switch (HP type) for status feedback to a PLC or annunciator. No undervoltage release, no ground-fault monitoring, no communication module on this variant — pure line protection with local trip indication.