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Siemens 5SY6304-7 — 3-Pole MCB (DIN Rail)

5SY6304-7 SENTRON MCB, C-Curve 3P, 6kA/30kA Breaking

MPN5SY6304-7
Active

Siemens SENTRON 5SY6304-7 miniature circuit breaker, C-curve, 3-pole, 6 kA (EN 60898-1) / 30 kA (IEC 60947-2) breaking capacity, 400 V AC, IP20.

$24.69Ref. price · indicative, final on quote
Siemens 5SY6304-7 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY6304-7 — Identification
ParameterValue
Brand nameSENTRON
Number of poles3
Pole configuration3P
Suitability for operationMechanical engineering / industry
5SY6304-7 — Protection
ParameterValue
Tripping characteristic (curve)C
Breaking capacity per EN 608986 kA
Breaking capacity per IEC 60947-230 kA
Overvoltage categoryIII
IP protection classIP20, with connected conductors
Energy limitation class3
Pollution degree3
5SY6304-7 — Electrical
ParameterValue
Rated voltage (AC, multi-phase)440 V
Voltage type (AC/DC)AC
Supply frequency range50/60 Hz
Power loss per pole at rated current (AC, hot)1.3 W
Mechanical service life (operating cycles, typ.)10 000
Neutral conductor switchingNo
Rated voltage (AC, single-phase)440 V
5SY6304-7 — Mechanical
ParameterValue
Modular width units3
Mounting positionany
Width54 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Terminal tightening torque, max.75 °C
Terminal tightening torque, min.-40 °C
Combined terminal, topYes
Combined terminal, bottomYes
Fastening methodQuick assembly system
SealableYes
Accepts supplementary devicesYes
5SY6304-7 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
Influence of surrounding temperaturemax. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C
Vibration resistance (IEC 60068-2-6)±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz

Product details

UL 1077 listing (5 kA) covers North American supplementary protection applications, so this one breaker spans both IEC and UL jurisdictions.

Fit and footprint — DIN rail, modular width, terminal detail

Combined terminal at both top and bottom means you can bus-bar the line side without extra links. Mounting position is any, so vertical or horizontal rail orientation works. IP20 with conductors connected — standard for inside a cabinet, not for washdown.

Environmental tolerance — built for the panel, not the pit

Humidity derating curve is published: 95 % RH up to 55 °C, 55 % RH at 70 °C, 35 % RH at 75 °C — so in a high-humidity environment, keep the ambient below 55 °C to avoid nuisance trips.

Frequently asked questions

What breaking capacity does the 5SY6304-7 have?

6 kA per EN 60898-1, 30 kA per IEC 60947-2 at 400 V AC, and 5 kA per UL 1077. At DC (60 V) it is rated 15 kA per IEC 60947-2.

Will the 5SY6304-7 drop into a panel designed for the 5SY4140-7?

Yes — same 3-pole, same 54 mm width, same DIN-rail mounting and terminal layout. The 5SY6304-7 has a higher breaking capacity (30 kA vs 6 kA under IEC 60947-2), so it is a drop-in upgrade if the panel's SCCR supports it.

Where can I buy the 5SY6304-7 and how is it quoted?

Sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for volume or single-piece orders.

MPN
5SY6304-7