Siemens 5SL6340-7 SENTRON Miniature Circuit Breaker 3P 40A C 6kA

The Siemens 5SL6340-7 is a SENTRON series 3-pole miniature circuit breaker rated 40 A with a C tripping characteristic and 6 kA breaking capacity at 400 V AC. Designed for residential buildings and infrastructure, it provides overload and short-circuit protection on three-phase AC circuits.

Technical specifications:

• MLFB: 5SL6340-7
• Manufacturer: Siemens
• Product line: SENTRON
• Poles: 3 (3P)
• Rated current: 40 A (at 30 °C); 38.07 A (at 40 °C); 34.97 A (at 55 °C)
• Rated voltage AC: 400 V, max 440 V (multi-phase)
• Rated voltage DC: max 62.5 V per pole
• Frequency: 50/60 Hz
• Tripping characteristic: C
• Breaking capacity (EN 60898 / IEC 60947-2): 6 kA
• Energy limitation class: 3
• Power loss per pole at rated current: 3.3 W
• Insulation voltage (Ui): 440 V AC
• Overvoltage category: 3
• Degree of pollution: 2
• IP rating: IP20 (with connected conductors)
• Mechanical service life: 10,000 operating cycles
• Conductor cross-section (solid/stranded/finely stranded): 0.75 - 25 mm²
• Tightening torque: 2.5 - 3 Nm
• Dimensions (WxHxD): 54 x 90 x 76 mm (installation depth 70 mm)
• Modular width units: 3
• Weight: 458.5 g
• Operating temperature: -25 °C to +45 °C
• Storage temperature: -40 °C to +75 °C
• Mounting: DIN rail, any mounting position

Features and benefits:

• Halogen-free construction for reduced toxic emissions in case of fire
• Silicon-free design suitable for environments where silicone contamination is a concern
• Sealable to prevent unauthorized operation after installation
• Touch-protected terminals for safe handling
• Supplementary devices installable for expanded functionality
• Suitable for both AC and DC circuits (single-pole DC use only)

Applications:

• Final circuit protection in residential buildings and infrastructure installations
• Three-phase load protection on distribution boards and consumer units
• Motor and equipment protection where C-curve characteristics are required
• Industrial panel boards requiring DIN rail mounted circuit protection

Compliant with EN 60898 and IEC 60947-2. Part of the Siemens SENTRON range.

Also known as: Siemens 5SL6340-7, Siemens SENTRON 3-pole 40A MCB, 5SL6 40A C-curve miniature circuit breaker.