When are Solid State Relays a good choice?

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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.

Nominal voltage	5 V-48 V
Current type	DC

Type	Instantaneous
SSR-Typ	MOSFET
Inrush current	40 A, 10 ms
Logic	PNP
Maximum voltage drop	≤ 0.14 V DC
Number of contacts	1 NO
Output type	MOSFET
Output voltage range	5 ... 48 V DC
Rated current	6 A
Rated load DC	360 W
Recommended minimum contact load	1 mA
Residual current	0.012 mA

R10-Z1PX/DC5-48V