The Siemens SENTRON 3VA2225-5HL32-0AD0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C, and it holds that same 250 A rating all the way up to 50 °C — no derating needed in a warm enclosure until you cross that threshold. Above 50 °C the thermal curve steps down: 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C. That means if your panel ambient runs 55 °C, you lose 9 A of headroom; plan the load accordingly. Interrupting capacity is where this breaker earns its place in high-fault installations: 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V. At 690 V the 4.5 kA rating is lower — verify the available fault current if you're using this on a 690 V system. Maximum power loss is 48 W, which factors into enclosure thermal calculations if you're stacking multiple breakers in a confined cabinet.
Configuration and auxiliary options
The breaker ships with 3 auxiliary switches (HQ type) fitted — these give you three independent status contacts for PLC inputs, panel indication, or safety interlock feedback. The base switch it builds on is the 3VA2225-5HL32-0AA0; the -0AD0 suffix adds the auxiliary switch package. If your application is motor branch circuit protection, you would typically look at a breaker with a different trip characteristic or a motor-protective circuit breaker.