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Siemens 5SY6020-6KV — Miniature Circuit Breakers (MCB)

Siemens 5SY6020-6KV SENTRON MCB, B 20A 1P+N 6kA

MPN5SY6020-6KV

Siemens SENTRON, miniature circuit breaker, 5SY6020-6KV, B-curve 20 A, 1P+N, 6 kA at 230 V AC, 70 mm depth.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

5SY6020-6KV — Specifications
ParameterValue
Influence of the surrounding temperaturePeriodically +55°C, max. 95% humidity

Product details

The 1P+N pole layout switches the line conductor and switches the neutral, which is standard for single-phase final circuits in many European and APAC markets. Mounting depth of 70 mm fits standard DIN-rail enclosures; the unit occupies a single width unit (18 mm).

Integration note

Snap-on mounting to standard DIN rail (EN 60715). The screw terminals accept 0.75–16 mm² solid or stranded copper. Rated ambient temperature range is -25 to +45 °C, with periodic exposure up to +55 °C and 95% humidity — adequate for most indoor panel environments without derating, though the 20 A rating should be checked against the thermal curve if the panel internal temperature exceeds 40 °C.

Frequently asked questions

What is the closest functional alternative to 5SY6020-6KV?

The closest peer is 5SY6020-7KL, which is identical in poles (1P+N), rated current (20 A), and breaking capacity (6 kA), but carries a C-curve tripping characteristic instead of B-curve. The C-curve (5–10× In) is better suited for small motor or fluorescent lighting loads with higher inrush; swap only if the circuit's inrush profile allows it.

Will 5SY6020-6KV drop into a panel specified for 5SY6020-7KL without rewiring?

Yes, the mechanical dimensions are identical: 18 mm width, 70 mm installation depth, standard DIN-rail mount. The terminal type and tightening torque (2–2.5 N·m) match. The only difference is the trip curve — B vs C — so no rewiring is needed, but the protective coordination must be rechecked for the circuit's inrush characteristics.

Where can I buy the 5SY6020-6KV?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
5SY6020-6KV