Siemens 5SY8225-7 SENTRON MCB — 2-pole, 25 A, C-curve, 30 kA
The DC rating is 15 kA at 72 V, covering control-circuit protection in DC bus applications. The 2-module width (36 mm) and 76 mm depth fit standard DIN-rail enclosures; the quick-assembly fastening system and any-position mounting simplify panel integration. Ambient temperature derating is published: at 50 °C the continuous rating drops to 24.38 A, at 55 °C to 23.72 A. IP20 with connected conductors is standard for enclosed panel mounting.
Compliance and approvals
The product designation per IEC 81346-2 and EN 61346-2 is letter F. Sealable terminals are standard, allowing lockout-tagout compliance.
