Contactor for mounting on DIN rail. For switching loads that do not correspond to the usage categories AC-1/AC-7a, please refer to the technical information. The contactors can be retrofitted with sealable terminal covers and an auxiliary switch. To ensure optimal heat dissipation in tight installations, the installation of a spacer is recommended. On the front of the contactor, there is a toggle switch (A-0-I) with the following positions: A normal contactor function / 0 the contactor is manually controlled (the control circuit is interrupted) / I the contactor is manually controlled (switching without a control signal). When the next control signal arrives, the switch automatically returns to position A, and the switching state is maintained.