3RT2016-2MB41-0KT0
The M-shaped coil is a 24V DC wide-range design, capable of stable engagement even with a voltage of 0.85~1.85 times the rated value. It has built-in diode protection, and this coil version is supplied in the market with the part number suffix "-0KT0".
The 3RT2016-2MB41-0KT0 belongs to the Siemens SIRIUS "M" coil version. It also features 24V DC power supply, a built-in diode, and a wide operating voltage range (it can engage normally within 0.85 to 1.85 times the rated value). The main circuit maintains the common specifications of the S00 housing and AC-3 9A/4kW/400V, with one normally open (NO) auxiliary contact. It's worth noting that this M coil version is consistently circulated in European distributor catalogs under two complete part numbers: "-2MB41-0KT0" (1 normally open) and "-2MB42-0KT0" (1 normally closed). In other words, "-0KT0" is the standard suffix for this M coil contactor, not an optional add-on. We have not found a publicly available word-for-word definition of this suffix code from Siemens during our investigations; therefore, we are simply recording the fact that it consistently appears with the M coil version without further speculation. In practical selection, the 2MB41 is fully compatible with the main circuit of the 24V DC coil versions of the same size, such as the 2VB41 and 2BB41. It can be selected based on the existing habit of using the exact coil model on site or the consideration of spare parts interchangeability.