SENTRON 3VA1163-5EF36-0AD0 — 63 A MCCB with TM240 release
The Siemens 3VA1163-5EF36-0AD0 is a SENTRON molded case circuit breaker rated for 63 A continuous current (Iu) with a TM240 thermal-magnetic overcurrent release. The three-pole design carries a rated insulation voltage of 800 V and delivers breaking capacities of 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — numbers that govern selectivity coordination downstream. The TM240 release is a fixed thermal-magnetic trip unit — no adjustable long-time or short-time pickup, which simplifies specification but means the breaker is sized to the load, not tuned around it. For a 63 A feeder protecting a fixed load like a panel main or a non-critical motor branch, this is a clean fit; for applications needing coordination curves, the adjustable electronic release variants in the 3VA family are the alternative.
Breaking capacity and selectivity headroom
At 415 V the 121 kA interrupting rating puts this MCCB well above typical utility fault levels in most industrial installations, so it can serve as a main breaker in a distribution panel without worrying about cascading failure upstream. The 17 kA at 690 V still covers most 690 V motor control center bus faults. The 800 V rated insulation voltage (Ui) confirms the internal clearances are sized for 690 V line-to-line systems.
Auxiliary contacts and monitoring
This variant ships with three auxiliary switches HQ (high-query type) integrated — no separate add-on module needed. That gives you three independent signal paths for remote status (open/closed/tripped) back to a PLC or indicator panel. No undervoltage release, no shunt trip, no ground-fault monitoring on this version — if those are needed, the order code must carry the corresponding option letter.
Panel fit and environmental limits
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that drops into most SENTRON distribution blocks and panelboards without re-drilling. The front face is IP40, meaning tools or fingers won't reach live parts, but the sides and back rely on the enclosure for ingress protection. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C. The 63 A rating holds at 40 °C, 45 °C, and 50 °C; above that it derates to 60.48 A at 55 °C and 56.7 A at 70 °C — factor that into panel ambient calculations.