ISR1-316/L-24 Coupling module
The ISR1-316/L contains 3 make contacts with advanced tungsten contacts.
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.
The installation relay has a built-in protection diode and interference suppression capacitor. Supply voltage: 24VAC/DC