Relay with break contact

The relay consists of a coil and a break contact. The response time varies depending on the time constant of the coil.

The time constant indicates when 63% of the nominal current is reached if the nominal voltage is applied abruptly.

Adjustable parameters

Designation Range Default value
Rated voltage 0.1 ... 400 V 12
Rated power 0.1 ... 10000 W 1.5
Time constant (Coil) 0.01 ... 1000 ms 2.5

Failure models

Failure model Description
Relay coil broken The relay cannot pick up because current cannot flow through the broken relay coil.
Relay coil shortcut The installation of the coil is faulty, creating a short circuit. The coil resistance specified in the failure configuration is used.
Relay picked up permanently The contacts are being actuated permanently due to a mechanical defect.
Relay does not pick up The contacts cannot be actuated due to a mechanical defect.
Relay does not drop out Once the relay has picked up, it no longer drops out.
Designation Range Default value
Resistance 1e-3 ... 1E8 Ohm 1