Siemens Miniature circuit breaker, 3-pole, 400V, 6kA, 63A Part number 5SY6363-7

Product Overview

Siemens SENTRON miniature circuit breaker (5SY6363-7) is a 3-pole protective device designed to provide overload and short-circuit protection in low-voltage electrical installations. With a rated current of 63 A and a C-type tripping characteristic, this breaker is suitable for general power distribution and protection of circuits in industrial, commercial and residential systems. Its compact modular design allows DIN rail mounting with easy installation and secure screw-type connections.

Key Features

• SENTRON miniature circuit breaker
• 3-pole configuration for three-phase systems
• Rated current 63 A with C-curve tripping characteristic
• Protects against overloads and short circuits
• Compact modular design (3 width units)
• Suitable for DIN rail mounting
• Screw terminal connections for reliable wiring
• Sealable and touch-protected housing

Technical Specifications

• Article Number: 5SY6363-7
• Product Family: SENTRON 5SY6 miniature circuit breakers
• Device Type: Miniature circuit breaker (MCB)
• Number of Poles: 3
• Rated Current (In): 63 A
• Tripping Characteristic: C-curve
• Rated Operational Voltage (AC): 230 / 400 V AC
• Rated DC Voltage: 72 V DC
• Rated Insulation Voltage (Ui): 440 V
• Rated Impulse Withstand Voltage (Uimp): 4 kV
• Breaking Capacity: Up to 6 kA (EN 60898) and up to 10 kA (IEC 60947-2)
• Energy Limitation Class: 3
• Operational Frequency: 50 / 60 Hz
• Connection Type: Screw terminals (top and bottom)
• Connectable Conductor Cross-Section: 0.75 … 35 mm²
• Terminal Tightening Torque: 2.5 … 3.5 N·m
• Protection Class: IP20 with connected conductors
• Degree of Pollution: 3
• Overvoltage Category: III
• Mounting: DIN rail (any position)
• Dimensions (H × W × D): approx. 90 mm × 54 mm × 76 mm
• Modular Width Units: 3
• Weight (approx.): 0.48 kg
• Operational Ambient Temperature: -25 °C to +55 °C
• Storage Temperature: -40 °C to +75 °C

Compliance & Certifications

• Manufactured to Siemens industrial quality standards
• Designed to IEC 60947-2 and EN 60898-1 specifications
• CE compliant
• RoHS compliant

Applications

The Siemens 5SY6363-7 SENTRON miniature circuit breaker is used for protecting three-phase electrical circuits in industrial, commercial and residential distribution boards. It provides reliable overload and short-circuit protection for motors, feeders and branch circuits, making it suitable for general power protection, lighting circuits and distribution panel applications.