Switch disconnector, not a breaker — what that means for your BOM line
The Siemens 3VA1116-1AA32-0CH0 is a SENTRON 3VA1 IEC frame 160 switch disconnector rated 160 A continuous (Iu) on a 3-pole body. The distinction matters for a BOM: this part opens and closes a circuit under load but does not trip on overcurrent. It sits in the same 70 mm deep × 76.2 mm wide × 130 mm high footprint as the 3VA1 MCCB siblings, using busbar connection on front terminals for the main circuit.
Undervoltage release and aux contact complement
The UVR has no leading contact, so the main contacts open directly on undervoltage without a time delay.
Ratings and environmental limits
Rated insulation voltage Ui is 800 V; maximum operational voltage is 690 V AC 50/60 Hz and 500 V DC. Short-time withstand is 2 kA at both 1 s and 0.5 s — this is the disconnector's fault-closing and short-time rating, not a breaking capacity. Mechanical endurance is 15 000 cycles. Maximum power loss is 38 W. Front protection is IP40; operating temperature range is -25 °C to +70 °C, storage -40 °C to +80 °C. The unit accepts busbar connection on front terminals, typical for panel-mount distribution.
Lifecycle status is listed as current production. This is an active catalog line within the Siemens SENTRON 3VA family.