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Siemens 5SY4620-6 — 4-Pole MCB (DIN Rail)

Siemens 5SY4620-6 SENTRON MCB, 20A B-Curve 4-Pole 10/20kA

MPN5SY4620-6
Active

Siemens SENTRON, miniature circuit breaker, 5SY4620-6, 4-pole (3P+N), 20 A, B characteristic, 10 kA per EN 60898 / 20 kA per IEC 60947-2, 4 MW units, IP20.

Siemens 5SY4620-6 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY4620-6 — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityMechanical engineering / industry
5SY4620-6 — Ratings
ParameterValue
Number of poles4
Pole configuration3P+N
Rated current (In), AC20 A
Rated voltage, AC (multi-phase)440 V
Rated voltage, AC (single-phase)440 V
5SY4620-6 — Protection
ParameterValue
Tripping characteristic (trip curve)B
Energy limitation class3
Overvoltage categoryIII
Pollution degree3
Degree of protection (IP)IP20, with connected conductors
Touch protectionYes
5SY4620-6 — Mechanical
ParameterValue
Width in modular units4
Width72 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Fastening / mounting methodQuick assembly system
Mounting positionany
Combined terminal, topYes
Combined terminal, bottomYes
Tightening torque, max.75 °C
Tightening torque, min.-40 °C
SealableYes
5SY4620-6 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
Influence of ambient temperature (derating)max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C
5SY4620-6 — Performance
ParameterValue
Mechanical service life (switching cycles, typ.)10 000

Product details

It carries dual interrupting ratings: 10 kA under EN 60898-1 and 20 kA under IEC 60947-2 / UL1077, so it covers both residential-distribution board and industrial panel applications depending on the standard the local code follows.

The quick-assembly fastening system snaps onto the rail without tools.

Thermal derating and environment

Rated 20 A at 35 °C ambient. Derates to 19.04 A at 40 °C, 18.54 A at 45 °C, 18.04 A at 50 °C, 17.5 A at 55 °C, and 16.96 A at 60 °C. If the panel runs warm, size the upstream protection accordingly. Ambient operating range is -40 to 75 °C. Humidity limits: 95% RH up to 55 °C, derating to 55% at 70 °C and 35% at 75 °C.

Frequently asked questions

Where can I buy 5SY4620-6 and get a price?

The part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time.

What is the difference between 5SY4620-6 and 5SY4140-7?

The 5SY4140-7 is a 4-pole (3P+N) B-curve MCB but rated 40 A instead of 20 A. Both share the same 4 MW DIN footprint, dual interrupting ratings (10/20 kA), and SENTRON series. The choice is purely the current rating — the 5SY4620-6 is the 20 A variant for lower-current branch circuits.

What compliance documentation does Siemens provide for 5SY4620-6?

The breaker is certified to IEC/EN 60898-1 and IEC/EN 60947-2 / UL1077. It is halogen-free and silicon-free. Standard compliance documentation (declaration of conformity, RoHS, REACH) is available from the manufacturer.

MPN
5SY4620-6