DIN relay coupler DRK-1/L
Switching on lighting fixtures can result in very high inrush currents. A closing contact bounces 3-7 times until it closes completely. This creates an arc that can melt the contact surface. If the closed contact cools down, micro-welding can occur (contact sticks).
To avoid contact sticking, relays with a leading tungsten contact are used.
This allows switch-on peaks of 165 A / max. 20 ms for incandescent lamps, or 800 A / max. 200 µs for fluorescent lamps.
An 8-pin connection comb is available for quick wiring of the negative pole A2.