SENTRON 3VA1110-5EE32-0DA0 — 100 A MCCB with TM220 Release and Undervoltage Trip
The Siemens 3VA1110-5EE32-0DA0 is a 3-pole SENTRON molded case circuit breaker rated for line-protection duty, carrying a continuous current of 100 A at 40 °C through 50 °C before the thermal derating curve begins to pull it back — 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. That derating profile means the breaker holds its full rating across typical panel ambient conditions; you only lose headroom above 50 °C, which is useful to know when the breaker shares an enclosure with heat-generating contactors or drives. Breaking capacity is specified across five voltage points: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. The steep drop above 440 V is characteristic of a breaker whose arc-chamber and contact geometry are optimized for the 240–415 V range common in North American and European distribution panels. At 690 V the 17 kA figure still covers most motor branch-circuit fault levels, but verify against the available fault current at the point of installation. The TM220 overcurrent release is a thermal-magnetic type — the thermal element handles overload protection with a time-delay curve, while the magnetic element trips instantaneously on short-circuit. No electronic adjustment or communication function is built in; this is a fixed-trip breaker for straightforward line protection where you don't need selective coordination tuning via software.
Undervoltage Release and Auxiliary Release Design
This variant includes an undervoltage release (UVR) as the auxiliary release — designated as such in the design-of-auxiliary-release field. The UVR trips the breaker when the control voltage drops below a preset threshold, which is standard for applications where you need to guarantee that downstream loads de-energize on a brownout or loss of control power (e.g., machine safety circuits or motor starters that must not auto-restart). The trip indicator is not present on this order code, so there is no local mechanical flag showing the trip cause; you'd rely on the UVR's own status or a remote auxiliary contact if added.
Dimensions and Panel Fit
The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep — a 3-pole footprint that fits standard SENTRON 3VA mounting bases and busbar systems. The 76.2 mm width (3 inches) is the critical dimension for multi-pole grouping in a distribution panel; three of these side-by-side occupy 228.6 mm of DIN-rail or panel-mounting width. Depth of 70 mm (2.76 in) leaves clearance for rear-connected busbars or cable lugs without protruding past the enclosure depth limit.