What It Is & Key Ratings
The 3RT2336-1NE30: This is a Siemens SIRIUS contactor, size S2, with a universal AC/DC coil rated 48-80 V. The coil draws 2 VA at both 50 Hz and 60 Hz, and the pickup/dropout thresholds are 0.8x and 1.1x of the rated voltage respectively — so at a 48 V minimum, pickup is guaranteed at 38.4 V and dropout at 52.8 V. That matters for brownout ride-through or long control cable runs where voltage drop is a concern. The contactor carries one normally open auxiliary contact (1 NO) as standard, rated for switching at various control voltages: 10 A at 24 V AC/DC, 10 A at 230 V AC, 3 A at 400 V AC, and 2 A at 48 V DC. These are the auxiliary contact ratings, not the main pole current — the main contact rating is not listed in this record, so verify the main pole current from the full datasheet if your load exceeds the auxiliary ratings.
Dimensions are 114 mm high, 75 mm wide, 130 mm deep. The S2 frame size is a common panel footprint — if you're replacing an existing S2 contactor, the drill points and rail clip align. Terminals are screw-type for the coil and main contacts. The solid/stranded wire range is 2x (0.5-1.5 mm²) and 2x (0.75-2.5 mm²) per terminal. Up to two auxiliary contact blocks can be attached on the side.