Product Overview

The 5SY7 series miniature circuit breaker is a robust protective device designed for three-phase electrical installations in commercial and industrial applications. This 3-pole circuit breaker provides comprehensive protection against overload and short circuit conditions with 15 kA breaking capacity, featuring C-curve tripping characteristics optimized for general applications including motor circuits, lighting, and power distribution systems.

Key Features & Specifications

• Current Rating: 40A rated current with C-curve tripping characteristics
• Configuration: 3-pole design for comprehensive three-phase protection
• Voltage Rating: 400V AC rated voltage with 15 kA breaking capacity
• Tripping Curve: C-curve characteristic suitable for general purpose applications
• Compact Design: Space-efficient construction for commercial and industrial use
• Protection Class: Standard IP protection for electrical enclosure installations
• Breaking Capacity: 15 kA fault current interruption capability
• Standards Compliance: Complies with international miniature circuit breaker standards
• Applications: Ideal for commercial, industrial, and infrastructure installations

Technical Characteristics

• Pole Configuration: 3-pole for three-phase protection
• Voltage Type: AC operation with 400V three-phase rating
• Frequency: 50/60 Hz standard frequency operation
• Current Limiting: Provides current limitation during fault conditions
• Installation: Standard DIN rail mounting for electrical panels
• Connection: Screw terminal connections for secure wiring
• Operating Temperature: Standard ambient temperature range for indoor use
• Mechanical Life: High mechanical endurance for reliable operation

Applications & Features

Perfect for protecting three-phase circuits in commercial buildings, industrial facilities, and infrastructure applications. Ideal for motor protection, three-phase lighting systems, power distribution panels, and general three-phase loads where reliable overcurrent protection is essential. Features as part of the SENTRON protection components family, providing effective protection against overloads and short circuits with automatic tripping functionality.

Safety & Protection

Designed for comprehensive three-phase circuit protection with simultaneous disconnection of all three poles during fault conditions. Provides reliable isolation to prevent equipment damage and ensure personnel safety. The 3-pole configuration ensures complete three-phase circuit isolation for enhanced safety during maintenance operations.

Compliance & Certifications

• Standards: RoHS compliant, WEEE compliant
• Safety: Contains REACH substances (Lead) at <0.1% w/w - no risk when used as intended

Download existing graphical data for this product:

• Technical Datasheet (PDF)
• Product Support Page
• SENTRON Protection Components Overview
• SiePortal Product Page