Siemens Miniature circuit breaker, 3-pole, 400V, 6kA, 25A Part number 5SY6325-7

Product Overview

Siemens SENTRON miniature circuit breaker (5SY6325-7) is a 3-pole protective device designed to provide reliable overload and short-circuit protection in low-voltage electrical installations. With a rated current of 25 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 DIN-rail mountable design and screw-type connections support easy installation and safe operation in distribution boards and control panels.

Key Features

• SENTRON miniature circuit breaker
• 3-pole configuration for three-phase circuits
• Rated current 25 A with C-curve tripping characteristic
• Protects against overloads and short circuits
• Compact modular housing for DIN rail mounting
• Screw terminal connections for secure wiring
• Sealable and touch-protected design
• Suitable for industrial, commercial and residential applications

Technical Specifications

• Article Number: 5SY6325-7
• Product Family: SENTRON 5SY6 miniature circuit breakers
• Device Type: Miniature circuit breaker (MCB)
• Number of Poles: 3
• Rated Current (In): 25 A
• Tripping Characteristic: C-curve
• Rated Operational Voltage (AC): 230 / 400 V AC
• Rated Insulation Voltage (Ui): 440 V
• Rated Impulse Withstand Voltage (Uimp): 4 kV
• Breaking Capacity: 6 kA at rated voltage
• 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 mounting (any position)
• Dimensions (H × W × D): approx. 90 mm × 54 mm × 76 mm
• Modular Width Units: 3
• Weight (approx.): 0.48 kg
• Ambient Operating Temperature: –25 °C to +55 °C
• Storage Temperature: –40 °C to +75 °C

Compliance & Certifications

• Manufactured to Siemens electrical protection standards
• Designed to IEC and EN circuit breaker specifications
• CE compliant
• RoHS compliant

Applications

The Siemens 5SY6325-7 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 feeders, branch circuits, motors and general power circuits, making it suitable for power protection in building installations, machinery panels and control systems.