MCCB for high-fault panel positions
The Siemens 3VA2110-6HN36-0DL0 is a SENTRON molded case circuit breaker rated for 100 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed up to the enclosure's thermal limit. Built on a 1200 A frame, it delivers 242 kA interrupting capacity at 240 VAC and 187 kA at 415 VAC, so it handles utility-transformer-level fault currents without cascading upstream. The 3-pole design is configured for line protection and includes an undervoltage release (UVR) as the auxiliary release, plus a complement of 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch (HQ type) for status feedback to a PLC or remote I/O.
What the interrupting ratings mean for panel coordination
The 242 kA at 240 V and 187 kA at 415 V are the maximum fault currents this MCCB can safely interrupt — values typically found at the main lug of a large distribution panel or downstream of a transformer. At 690 V the rating drops to 3.7 kA, which still covers most motor-circuit fault levels but confirms this breaker is sized for 480 V and below in high-available-current installations. The 1200 A frame means the internal mechanism and contacts are physically larger than a 100 A breaker needs, giving mechanical headroom for the high interrupting duty. The 12.5 W maximum power loss at rated current is relevant for panel thermal calculations, especially in a sealed enclosure.
Integration into a panel — dimensions and wiring
The breaker measures 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without special adapters. The auxiliary switch block (2 aux + 1 trip alarm + 1 electrical alarm HQ) is factory-integrated, so no field assembly of add-on modules is needed. The undervoltage release is also installed; verify that the UVR coil voltage matches the control circuit before energizing. The basic switch assembly carries order code 3VA21106HN360AA0 for spare-part traceability.