What it is and what it does
The Siemens 3VA1163-5EE32-0BH0 is a SENTRON 3-pole molded case circuit breaker (MCCB) sized for line protection — the main feed or a large branch — with a 63 A rated continuous current (Iu) and a TM220 thermal-magnetic overcurrent release. The TM220 means the thermal element handles overloads and the magnetic element handles short-circuits; no electronic adjustment, so what you set at the factory is what you get in the field. Breaking capacity hits 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — numbers that tell you this breaker is built for high-fault panels where the available short-circuit current is substantial.
What the ratings mean for fit
The 63 A continuous current holds flat from 40 °C to 50 °C; above that it derates stepwise — 60.48 A at 55 °C, 59.22 A at 60 °C, 57.96 A at 65 °C, 56.7 A at 70 °C. If your panel ambient runs hot, the breaker still carries the load, but you lose a few amps. The rated insulation voltage is 800 V, so it's comfortable on 480 V or 600 V class systems. The IP40 front protection means it's fine in a clean indoor enclosure; no washdown rating here.
Auxiliary and undervoltage release
This version carries an undervoltage release (UVR) — if the control voltage drops, the breaker trips. That's useful for emergency-stop circuits or undervoltage protection on a machine. It also has 2 auxiliary switches and 1 trip alarm switch (HQ type), so you can signal breaker status back to a PLC or indicator lamp. The trip indicator on the front gives a local visual flag.
Dimensions and panel fit
The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep. That 70 mm depth is the dimension from the mounting surface to the front of the breaker — important when you're laying out a panel with a shallow enclosure or a door-mounted operator. Width of 76.2 mm is a standard 3-pole MCCB footprint; it fits the same bus-bar spacing as other SENTRON 3VA breakers. The latching endurance is rated at 15 000 operations, which is typical for a distribution breaker — not a switching device, but it handles occasional manual operations without issue.