The Siemens SENTRON 3VA2163-5HN36-0JL0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current at up to 70 °C ambient — no derating needed across the full temperature range. The 187 kA interrupting capacity at 240 V AC gives it headroom for high-fault installations, and it still delivers 121 kA at 415 V and 75.6 kA at 500 V. At 690 V the rating drops to 3.7 kA, so it is not a primary choice for 690 V main breakers.
Rated at 63 A from 40 °C all the way to 70 °C — that is a flat thermal curve, so you do not have to derate for elevated ambient temperatures inside a crowded enclosure. The 187 kA SCCR at 240 V means this breaker can safely interrupt a fault current up to that level without welding contacts or venting arc gas into the panel; at 415 V it still handles 121 kA. Three poles cover three-phase line or feeder duty. That gives you remote status and trip indication without adding external relay logic.
Dimensions: 105 mm wide, 181 mm tall, 86 mm deep. Maximum power loss is 4 W, so heat buildup in a sealed cabinet is minimal. No communication module is fitted; this is a standalone breaker with hardwired auxiliary contacts and shunt trip only.