Auxiliary contacts

Contact reliability

To switch voltages ≤ 110 V and currents ≤ 100 mA, the auxiliary contacts of the 3TF2 miniature contactors should be used as they provide a high level of contact reliability.

These auxiliary contacts are suitable for solid-state circuits with currents ≥ 1 mA at a voltage of 17 V and higher.

Short-circuit protection of the miniature contactors

Short-circuit protection of the miniature contactors without overload relay see technical specifications.

Design of the connections

The 3TF2 miniature contactors with screw connections are available with SIGUT screw terminals, 6.3 mm x 0.8 mm flat connectors and solder pin connections.

The miniature contactors with 6.3 mm x 0.8 mm flat connectors can be used in the plug-in base with solder pin connections for printed circuit boards. The miniature contactors are coded, and the plug-in base can be coded to ensure non-interchangeability.

Reversing duty

To use 3TF2 AC-operated miniature contactors in reversing or Dahlander mode, an additional dead interval of 50 ms is required along with an NC contact interlock.