Siemens SENTRON 5SY7420-8CC, 4-pole miniature circuit breaker, D tripping characteristic, 20 A rated current, 25 kA breaking capacity at 400 V AC per IEC 60947-2, 4 width units.
| Parameter | Value |
|---|---|
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Width | 72 mm |
| Height | 90 mm |
| Depth | 76 mm |
It breaks 25 kA per IEC 60947-2, which means it safely interrupts high fault currents in industrial distribution panels without cascading upstream — a key spec for selectivity coordination. For UL 1077 and CSA C22.2 No. 235 installations, the interrupting rating is 5 kA.
Terminals accept solid or stranded conductors from 0.75 to 35 mm², torqued to 2.5–3.5 N·m. Any mounting position is allowed.
No last-time-buy or phase-out notice applies.
25 kA per IEC 60947-2 at 400 V AC, and 5 kA per UL 1077 and CSA C22.2 No. 235.
Solid or stranded conductors from 0.75 to 35 mm².
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
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