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Siemens 5SL6420-7 — Miniature Circuit Breakers (MCB)

Siemens 5SL6420-7 SENTRON MCB, 4P C 20A 6kA

MPN5SL6420-7
Active

Siemens SENTRON 5SL6420-7 miniature circuit breaker, 4-pole, C-curve, 20 A, 6 kA breaking capacity per EN 60898 and IEC 60947-2, 400 V AC.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

5SL6420-7 — Ratings
ParameterValue
Overvoltage categoryIII
5SL6420-7 — Mechanical
ParameterValue
Width72 mm
Height90 mm
Depth76 mm

Product details

The C-curve is the standard choice for moderate inrush loads. At 20 A per pole on a 400 V AC three-phase system, this breaker handles general-purpose load. IP20 with connected conductors means the busbar and wiring must be enclosed — this is a panel-mount breaker, not a standalone device.

Sealable with a lead seal through the toggle slot.

Frequently asked questions

What is the closest functional second-source — 5SL4363-7?

The 5SL4363-7 is the 3-pole sibling with 10 kA breaking capacity. The 5SL6420-7 is 4-pole at 6 kA. Both share the same C-curve, same 400 V AC rating, and same 76 mm depth. The 5SL4363-7 is 3 module-widths (54 mm) vs 4 for the 5SL6420-7. They are not drop-in interchangeable — different pole count and different breaking capacity.

MPN
5SL6420-7