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Siemens 5SY7306-6 — 3-Pole MCB (DIN Rail)

Siemens 5SY7306-6 SENTRON MCB, 3P B-Curve, 15/40 kA

MPN5SY7306-6
Active

Siemens SENTRON 5SY7306-6, 3-pole miniature circuit breaker, B tripping characteristic, 15 kA (EN 60898) / 40 kA (IEC 60947-2) breaking capacity, 400 V AC, 54 mm wide.

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

Specifications

5SY7306-6 — Identification
ParameterValue
Brand nameSENTRON
Number of poles3
Pole configuration3P
Suitability for operationMechanical engineering / industry
5SY7306-6 — Protection
ParameterValue
Tripping characteristic (curve)B
Breaking capacity per EN 6089815 kA
Breaking capacity per IEC 60947-240 kA
Overvoltage categoryIII
IP protection classIP20, with connected conductors
Energy limitation class3
Pollution degree3
5SY7306-6 — 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)2.1 W
Mechanical service life (operating cycles, typ.)10 000
Neutral conductor switchingNo
Rated voltage (AC, single-phase)440 V
5SY7306-6 — 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
5SY7306-6 — 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

It carries a 15 kA interrupting rating per EN 60898 and a 40 kA rating per IEC 60947-2, with a 5 kA rating under UL 1077 — so the same unit covers IEC and North American installations without swapping variants. The 54 mm width (3 modular units) snaps onto standard DIN rail; the quick-assembly system and combined top/bottom terminals speed panel wiring.

Breaking capacity and standards

Three interrupting ratings on the nameplate: 15 kA at 400 V AC per EN 60898-1 (the domestic/commercial standard), 40 kA at 400 V AC per IEC 60947-2 (the industrial standard), and 5 kA per UL 1077. DC rating is 15 kA at 60 V per IEC 60947-2, with a max DC operating voltage of 72 V.

Rated for -40 °C to 75 °C ambient, with humidity derating: 95% RH up to 55 °C, 55% RH up to 70 °C, 35% RH up to 75 °C. Pollution degree 3 (conductive pollution typical of industrial enclosures). Halogen-free and silicon-free construction. Sealable terminals allow lockout/tagout compliance.

Frequently asked questions

What are the key ratings of 5SY7306-6?

3-pole, B-curve, 15 kA per EN 60898, 40 kA per IEC 60947-2, 5 kA per UL 1077, 400 V AC, 54 mm wide, -40 to 75 °C ambient range.

What compliance documentation does Siemens provide for 5SY7306-6?

The breaker is certified to IEC/EN 60898-1, IEC/EN 60947-2, and UL 1077. It is halogen-free and silicon-free. Standard Siemens documentation includes the declaration of conformity and UL recognition.

MPN
5SY7306-6