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Siemens 5SY4406-7KK11 — 4-Pole MCB (DIN Rail)

Siemens 5SY4406-7KK11 SENTRON MCB, 4P C 6A, 10/35 kA

MPN5SY4406-7KK11

Siemens SENTRON 5SY4406-7KK11, 4-pole miniature circuit breaker, C-curve, 6 A rated current, 400 V AC, 10 kA (EN 60898) / 35 kA (IEC 60947-2), 4 width units, IP20 with connected conductors.

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

Specifications

5SY4406-7KK11 — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityMechanical engineering / industry
5SY4406-7KK11 — Ratings
ParameterValue
Number of poles4
Pole configuration4P
Rated current (In), AC400 V
Rated current (In), AC6 A
Rated voltage, AC (multi-phase)440 V
Rated voltage, AC (single-phase)440 V
Rated voltage, DC (max.)72 V
Voltage typeAC
Rated frequency50/60 Hz
5SY4406-7KK11 — Protection
ParameterValue
Tripping characteristic (trip curve)C
Rated breaking capacity (Icn), per EN 6089810 kA
Rated breaking capacity, per IEC 60947-235 kA
Breaking capacity, AC (UL 1077 / CSA C22.2 No.235)5 kA
Overvoltage categoryIII
Degree of protection (IP)IP20, with connected conductors
Neutral conductor switchingNo
Touch protectionYes
5SY4406-7KK11 — Mechanical
ParameterValue
Width in modular units4
Width72 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Combined terminal, topYes
Combined terminal, bottomYes
SealableYes
5SY4406-7KK11 — 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
5SY4406-7KK11 — Performance
ParameterValue
Mechanical service life (switching cycles, typ.)10 000

Product details

It handles 400 V AC and delivers a 10 kA breaking capacity per EN 60898, with a higher 35 kA rating per IEC 60947-2 — the figure that governs selectivity in an industrial panel.

The 10 kA EN 60898 rating is the residential/commercial ceiling; the 35 kA figure is what an industrial engineer sizes against. Terminals accept solid or stranded conductors from 0.75 to 35 mm² — that covers everything from control wiring (1.5 mm²) up to the main feeder (25 or 35 mm²). Combined terminals top and bottom mean you can feed through or loop out without separate busbar connectors. The breaker is sealable (tamper-evident seal wire possible) and carries touch protection per the IP20 rating once conductors are connected.

The design is explicitly for railway applications (vibration and shock tolerance) and mechanical engineering / industry environments.

Frequently asked questions

How do I get current pricing and availability for 5SY4406-7KK11?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What is the breaking capacity of 5SY4406-7KK11?

It is rated 10 kA per EN 60898 and 35 kA per IEC 60947-2 at 400 V AC. For DC circuits, the breaking capacity is 15 kA per IEC 60947-2 at a maximum rated DC voltage of 72 V.

What conductor sizes does 5SY4406-7KK11 accept?

The terminals accept solid and stranded conductors from 0.75 mm² up to 35 mm². Combined terminals top and bottom allow feed-through or loop-out wiring.

Will 5SY4406-7KK11 drop into a panel that was specified around 5SY6602-8 without rewiring?

Not directly — the 5SY6602-8 is a different pole/current/curve variant. The 5SY4406-7KK11 is a 4-pole C-curve 6 A breaker; the 5SY6602-8 is a different order code. Check the pole count, rated current, and tripping characteristic before substituting. The physical footprint (4 width units, 72 mm wide) is standard for the SENTRON family, but the electrical ratings must match the circuit design.

MPN
5SY4406-7KK11