Switch disconnector 3VA1116-1AA36-0KH0 — SENTRON 3VA1, 160 A, 3-pole
The SENTRON 3VA1116-1AA36-0KH0 is a 3-pole switch disconnector in MCCB design, rated for a continuous current Iu of 160 A. It provides no overload or short-circuit protection — it is a pure disconnecting means for isolation and switching under load, not a circuit breaker. The unit includes a shunt trip release (STL) for remote tripping, plus 2 auxiliary switches and 1 trip alarm switch (HQ configuration). Rated insulation voltage is 800 V, with maximum operational voltage 690 V AC and 500 V DC. The front terminal connection accepts clamp-type wiring, and the unit is rated IP40 on the front. Lifecycle status is current production. This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.
Key ratings and what they mean for fit
The 160 A continuous rating (Iu) governs the maximum load current the disconnector can carry continuously without exceeding its temperature rise limits. For motor or resistive loads up to 160 A, this unit serves as a load-break disconnect. The 690 V AC / 500 V DC maximum operational voltage covers standard 400 V three-phase systems and most DC bus voltages up to 500 V. Short-time withstand current is 2 kA for both 0.5 s and 1 s intervals — this is the fault current the disconnector can carry momentarily without damage, not a breaking capacity. For applications requiring fault interruption, an upstream protective device must coordinate to clear within that window. The shunt trip release (STL) operates on 220-250 V DC or 208-277 V AC, allowing remote opening from a control system or emergency-stop circuit. The auxiliary contact block provides 2 form-C (CO) contacts for status feedback and 1 dedicated trip alarm contact, useful for PLC or SCADA monitoring.
Integration and mounting
Dimensions: 130 mm height, 76.2 mm width, 70 mm depth. Front terminal access simplifies wiring in panel layouts where side access is limited. Operating temperature range -25 °C to +70 °C; storage range -40 °C to +80 °C. Maximum power loss is 38 W at rated current — account for this heat in enclosure sizing and ventilation. The unit accepts optional motor drive for remote motorized operation, and the auxiliary release is a shunt trip only (no undervoltage release). Communication function is not built in; this is a standalone disconnect.