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Siemens 5SY6401-8CC — 4-Pole MCB (DIN Rail)

Siemens 5SY6401-8CC SENTRON MCB, 4P, 1A, D-Curve, 6kA

MPN5SY6401-8CC

Siemens SENTRON 5SY6401-8CC, 4-pole miniature circuit breaker, 1 A rated current, D tripping characteristic, 6 kA at 400 V AC per EN 60898, 5 kA per UL 1077.

Siemens 5SY6401-8CC datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY6401-8CC — Identification
ParameterValue
Type / order code5SY6CC
Brand nameSENTRON
Application suitabilityMechanical engineering / industry
5SY6401-8CC — Ratings
ParameterValue
Number of poles4
Pole configuration4P
Rated current (In), AC400 V
Rated current (In), AC1 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
5SY6401-8CC — Protection
ParameterValue
Tripping characteristic (trip curve)D
Rated breaking capacity (Icn), per EN 608986 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
5SY6401-8CC — Mechanical
ParameterValue
Width in modular units4
Width72 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Combined terminal, topYes
Combined terminal, bottomYes
SealableYes
5SY6401-8CC — 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
5SY6401-8CC — Performance
ParameterValue
Mechanical service life (switching cycles, typ.)10 000

Product details

SENTRON 5SY6401-8CC — 4-pole D-curve MCB at 1 A

It protects against overload and short-circuit in circuits up to 400 V AC, with a breaking capacity of 6 kA per EN 60898 and 5 kA per UL 1077 / CSA C22.2 No. 235.

Tightening torque is 2.5–3.5 N·m. Installation depth is 70 mm; the overall depth is 76 mm.

IP20 protection with connected conductors. Halogen-free and silicon-free construction. Overvoltage category III. The breaker is touch-protected and can be positioned with the power supply cord at any angle.

Frequently asked questions

What is the breaking capacity of the 5SY6401-8CC?

6 kA at 400 V AC per EN 60898; 5 kA per UL 1077 and CSA C22.2 No. 235. That covers most industrial panelboard and sub-distribution applications.

What conductor sizes does the 5SY6401-8CC accept?

Solid or stranded copper: 0.75 to 35 mm². Combined top and bottom terminals allow pass-through wiring without extra junction blocks.

Where can I buy the 5SY6401-8CC?

Sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm line.

What is the difference between the 5SY6401-8CC and the 5SY3132-6?

The 5SY3132-6 is a different pole/current variant in the same SENTRON family. The 5SY6401-8CC is a 4-pole, 1 A D-curve unit; the 5SY3132-6 is a 3-pole, 32 A C-curve. They are not drop-in replacements — verify your BOM ratings before substituting.

MPN
5SY6401-8CC