With UL certification for short-circuit current ratings (SCCR), solid-state relays are intended to facilitate an industrial control panel builder’s efforts to comply with the Article 409 from NEC and the latest version of UL 508A by providing them with preapproved ratings for SSR/fuse combination. The approved ratings allow panel builders to establish the SCCR for the branch circuit where the relay is located without performing additional testing.

Crydom, An Operation of Custom Sensors & Technologies
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