Siemens SENTRON 3VA1116-4GE42-0AA0 — 160 A, 4-Pole MCCB
The Siemens SENTRON 3VA1116-4GE42-0AA0 is a 4-pole molded case circuit breaker rated at 160 A continuous, designed for line protection in distribution panels. It carries a TM220 thermal-magnetic overcurrent release — the thermal element handles overloads, the magnetic element clears short circuits fast. Breaking capacity sits at 121 kA at 240 V and 75.6 kA at 415 V, so it handles high-fault utility feeds without cascading upstream.
Derating and Thermal Management
This breaker holds its full 160 A rating from 40 °C up to 50 °C. Above that it starts to taper: 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C. Max power loss is 38 W — that's the heat you need to vent inside the enclosure. If the panel runs hot, size the bus and ventilation for the derated current, not the nameplate.
Breaking Capacity Across Voltages
The interrupting rating drops as voltage climbs: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That 11.9 kA at 690 V is the hard ceiling — if your fault current exceeds that at the higher voltages, step up to a higher-rated frame. The insulation voltage is rated 800 V, so the breaker itself is built for the higher potential; it's the interruption capability that governs selection.
Physical Fit and Panel Integration
Dimensions are 130 mm tall, 101.6 mm wide, 70 mm deep — a standard 4-pole MCCB footprint that drops into most SENTRON panelboards and DIN-rail adapters. Front face carries IP40 protection, so it's fine inside a closed enclosure but not for washdown areas. No undervoltage release, no communication module, no ground-fault monitoring on this variant — it's a straight thermal-magnetic line protection breaker.
Lifecycle and Sourcing Reality
Current-production part. Sourced through independent distribution and quoted to order against an RFQ. Availability and pricing confirmed at quote time.