Line protection MCCB with 187 kA interrupting capacity
The Siemens SENTRON 3VA1110-5EF36-0AC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 100 A continuous current at up to 50 °C ambient with no derating — at 55 °C it still holds 96 A, and at 70 °C it delivers 90 A, so the full 100 A rating is usable across most panel environments without a temperature penalty. Its interrupting ratings are the headline: 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — figures that place it in the high-breaking-capacity class for industrial distribution where fault currents can exceed 100 kA on the secondary side of a large transformer.
Panel fit and auxiliary contacts
The 3VA1110-5EF36-0AC0 measures 76.2 mm wide by 130 mm tall by 70 mm deep — a standard 3-pole MCCB footprint that fits Siemens SENTRON mounting plates and most DIN-rail adapters. Front protection is IP40, meaning tools or fingers cannot reach live parts from the front, but the sides and back are open for heat dissipation inside the enclosure — standard for panel-mounted MCCBs.
Lifecycle and compliance posture
Storage temperature range of -40 °C to 80 °C and operating range of -25 °C to 70 °C cover most indoor and conditioned outdoor installations; the -25 °C minimum means it can sit in an unheated electrical room in cold climates without issue.