It mounts directly onto a contactor via the fastening method specified, saving panel space and eliminating separate wiring for the power circuit. The relay is rated for a surge voltage of 6 kV and carries an IP20 protection class on the front, suitable for enclosed panel environments. It is ATEX certified under DMT 98 ATEX G 001, allowing use in potentially explosive atmospheres when paired with an appropriate contactor and upstream protection. Shock resistance is rated at 8g for 10 ms, and the relay can operate in up to 100 % relative humidity.
The 3RU1116-1EB0 fastens directly onto a contactor (contactor mounting). It occupies a width of 45 mm, height of 87 mm, and depth of 78 mm. Required clearances around the relay are: 0 mm upwards, 0 mm forwards, 0 mm backwards, 0 mm downwards, and 6 mm at the side — allowing tight packing in a panel. Mounting position is flexible: the relay can be mounted on a vertical surface with ±135° rotation or ±45° tilt to the front and back, simplifying installation in crowded enclosures.
Terminals and Wiring
Both the main current circuit and auxiliary/control circuit use screw-type terminals. The main circuit accepts solid conductors of 2x (0.5... 1.5 mm²) and 2x (0.75... 2.5 mm²), or finely stranded with core end processing of the same sizes. AWG equivalents for the main contacts are 2x (20... 16), 2x (18... 14), and 2x 12. Auxiliary contacts accept 2x (20... 16) and 2x (18... 14) AWG.
The built-in auxiliary contacts are rated for the following voltages and currents: 1 A at 24 V, 0.22 A at 110 V, 3 A at 120 V, 0.22 A at 125 V, 0.11 A at 220 V, 2 A at 230 V, and 1 A at 400 V. These ratings cover common control circuit voltages in both North American and European panels.
The 3RU1116-1EB0 is listed as a current-production item (lifecycle stage: current). It remains a standard offering in the Siemens SIRIUS portfolio.