Siemens 5SL6363-7 Miniature Circuit Breaker 3P 63A C 6kA

The Siemens 5SL6363-7 is a 3-pole SENTRON miniature circuit breaker rated at 63 A with a type C tripping characteristic, designed for overcurrent and short-circuit protection on 400 V AC systems. It delivers a breaking capacity of 6 kA to EN 60898 and IEC 60947-2, suitable for residential and infrastructure distribution boards. The unit accepts conductors from 0.75 mm² to 25 mm² and can be installed in any mounting orientation.

Technical specifications:

• MLFB: 5SL6363-7
• Manufacturer: Siemens
• Product line: SENTRON
• Poles: 3P
• Tripping characteristic: C
• Rated current: 63 A (at 30°C) / 59.18 A (at 40°C) / 52.93 A (at 55°C)
• Supply voltage: 400 V AC, 50/60 Hz
• Insulation voltage: 440 V AC (multi-phase)
• Breaking capacity: 6 kA (EN 60898 / IEC 60947-2)
• Energy limitation class: 3
• Power loss per pole: 5.2 W
• IP rating: IP20 (with connected conductors)
• Overvoltage category: 3 / Pollution degree: 2
• Operating temperature: -25°C to +45°C
• Storage temperature: -40°C to +75°C
• Mounting position: Any
• Modular width: 3 units (54 mm)
• Dimensions (WxHxD): 54 x 90 x 76 mm
• Conductor cross-section: 0.75 mm² to 25 mm² (solid, stranded, finely stranded with ferrule)
• Tightening torque: 2.5 to 3 N·m
• Mechanical service life: 10,000 operating cycles
• Weight: 480 g

Features and benefits:

• Halogen-free and silicon-free construction
• Sealable design to deter unauthorised adjustment
• Touch protection with connected conductors (IP20)
• Compatible with supplementary add-on devices for extended functionality
• Neutral conductor not switched, simplifying wiring in 3-pole configurations
• Rated for residential buildings and infrastructure installations per Siemens datasheet

Applications:

• Branch circuit protection in residential distribution boards
• Infrastructure panel and switchgear installations
• Protection of loads with moderate inrush currents on 400 V AC networks
• DIN rail-mounted feeder and sub-circuit protection

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

Also known as: Siemens 5SL6363-7, SENTRON 5SL6 3-pole 63A MCB.