When are Solid State Relays a good choice?

Question

Accepted Answer

Solid State Relays (SSRs) are particularly interesting when special requirements regarding environment, switching frequency or signal quality apply:

Robust against mechanical stress: SSRs are resistant to vibration and shock.
Frequent switching cycles / fast switching: Without mechanical contacts, SSRs are ideal for applications with many switching operations or high switching frequency.
Rare switching operations: Even with very low switching frequency, SSRs remain reliable since no contact corrosion can occur.
Very long service life: With no moving parts, SSRs hardly wear out and achieve a much longer lifetime than electromechanical relays.
Low-noise or silent operation: They operate completely noiselessly and without contact sparks.
Zero-cross switching in AC: Many SSRs switch at the zero-crossing of the AC voltage and thereby reduce voltage spikes, especially with inductive loads. Our CSS-Z* and R10-Z1Z* series feature zero-cross switching.

Note: At higher loads, SSRs generate heat. Depending on the application, suitable cooling or mounting on a heat sink is required.

Current type	DC
Nominal voltage	24 V

Test voltage contact / coil	2.5 kV / 1 min
Test voltage open contact	1 kV / 1 min

Inrush current	80 A, 10 ms
Maximum voltage drop	1.2 V AC
Output type	TRIAC
Output voltage range	48 ... 280 V AC
Rated current	2 A
Rated limit load I²t	32 Asup2/sups
Recommended minimum contact load	100 mA
Type	Synchronized zero

Approvals	CE,UKCA,cURus,EAC
Standards	EN 62314

CRINT-R18/DC24V