Brochure/Catalogue

Loads with capacitive load shares, especially LED lamps, place extreme demands
on the switching contacts, regardless of the voltage type. They produce extremely
high-energy current peaks at the moment of switching on. These can reach over
100 A and weld the contact.
Today, many loads with capacitive load shares are hidden in pre-circuits, which
previously were typical inductive loads in the past, e.g. solenoid valves and
contactors. Due to these pre-circuits, the operation is often possible over a wide
range of input voltage.
One example are solenoid valves that can be operated with a voltage of 110 V to
230 V AC/DC. The pre-circuits can also conceal capacitors that are switched on
not damped and thus generate very high inrush current peaks of up to 150 A.
These current peaks also lead to welding of the contacts.
For loads with wide-range input, the inductive load share is usually unproblematic,
as it is eliminated by a suitable protective circuit in the wide-range input.
Switching of capacitive loads
Relays for LED lamps and devices with high inrush currents
A.12 2737920000
Selection guide
A
Relays for LED lamps and devices with high inrush currents