Product Overview

5SY7 Series Miniature Circuit Breaker - High-performance protection solution for industrial and commercial applications with exceptional 15kA breaking capacity. Engineered for universal use in lamp and motor circuits with higher starting currents, delivering reliable overcurrent and short-circuit protection.

Key Specifications

• Voltage Rating: 400V AC (230V single phase)
• Breaking Capacity: 15kA
• Poles: 3-pole configuration
• Tripping Characteristic: C (5-10 × In magnetic tripping)
• Rated Current: 20A
• Standards Compliance: EN 60898-1, EN 60947-2, UL 1077, CSA 22.2
• Frequency: 50/60 Hz
• Mounting Width: 54mm (3 x 18mm modules)

Technical Features

• Combined terminals at both ends for flexible wiring arrangements
• Rectangular terminals support pin busbars and cables up to 35mm²
• Touch protection compliant with EN 50274 safety standards
• Handle end position sealable for enhanced security and tamper resistance
• Degree of protection: IP20 with connected conductors, IP40 in handle area with distribution cover
• CFC and silicone-free construction for environmental responsibility
• Service life: 20,000 actuations on average with rated load

Installation Specifications

• Conductor Cross-sections:
  • 1-wire solid/stranded: 0.75-35mm²
  • 2-wire same cross-section: 0.75-10mm²
  • Finely stranded with end sleeve: 0.75-25mm²
• Terminal tightening torque: 2.5-3 Nm
• Mounting: Any position on standard DIN rail (35mm)
• Ambient temperature: -25°C to +55°C (max. 95% humidity)
• Storage temperature: -40°C to +75°C

Applications

Optimal for protection of lamp and motor circuits including:

• Commercial and industrial lighting systems
• Motor control circuits with moderate inrush currents
• Distribution panels in commercial buildings
• HVAC equipment protection
• General purpose electrical installations
• Socket outlet circuits in office buildings
• Fluorescent and discharge lighting applications

Compliance & Certifications

• European Standards: EN 60898-1, EN 60947-2
• North American: UL 1077 (Supplementary Protector), CSA 22.2
• International: IEC standards compliance
• Safety approvals available at: www.siemens.com/lowvoltage/certificates

Physical Dimensions

• Height: 90mm
• Width: 54mm (3 modules)
• Depth: 70mm
• Net Weight: 0.480 kg
• Country of Origin: China

Additional Information

• EAN: 4001869449791
• Export Control: ECCN: N / AL: N
• RoHS Compliant: Since 01.04.2013
• WEEE Take-Back: Yes
• REACH Article 33: Contains lead - refer to product documentation for safe handling guidelines

Download existing graphical data for this product:

Technical Data Sheet

5SY7 Series Complete Manual

Product Certificates

Installation Manual

SENTRON MCB Technical Documentation

CAD Drawing Files - LV10 Catalog