Siemens Miniature circuit breaker, 3-pole, 400V, 15kA, 2A Part number 5SY7302-7CC

Product Overview

The Siemens 5SY7302-7CC is a SENTRON miniature circuit breaker designed for reliable line and equipment protection in infrastructure and industrial applications. It is a 3-pole MCB rated at 2A with tripping characteristic type C, suitable for protecting against overload and short-circuit faults. With a high breaking capacity of 50kA (IEC 60947-2) and AC operating voltage up to 400V, it offers robust protection performance for demanding environments.

Key Features

• 3-pole SENTRON miniature circuit breaker
• Rated current: 2A
• Tripping characteristic: Type C
• High short-circuit breaking capacity: 50kA
• Touch-safe design with IP20 protection (with connected conductors)
• Combined terminals top and bottom
• Halogen-free, silicon-free, and sealable design
• Suitable for both infrastructure and industrial use
• Service life approx. 10,000 mechanical operations
• Supplementary devices can be added

Technical Specifications

• Article Number: 5SY7302-7CC
• Product Type: Miniature Circuit Breaker (MCB)
• Number of Poles: 3-pole (3P)
• Rated Current: 2A
• Rated Operating Voltage: AC 400V / DC 60V
• Rated Insulation Voltage Ui: 440V
• Frequency Range: 50/60Hz
• Breaking Capacity: 50kA (IEC 60947-2)
• Operational Current at AC: 2A (1.89A at 40°C / 1.77A at 50°C / 1.71A at 55°C)
• Overvoltage Category: 3
• Pollution Degree: 3
• Power Loss: 1.4W per pole
• Ingress Protection: IP20 (with connected conductors)
• Conductor Size: 0.75–35mm² solid/stranded, 0.75–25mm² ferruled
• Tightening Torque: 2.5–3.5Nm
• Mounting: DIN-rail, any position
• Dimensions (H×W×D): 90 × 54 × 76mm
• Weight: approx. 0.48kg
• Operating Temperature: −25°C to +55°C
• Storage Temperature: −40°C to +75°C

Compliance & Standards

• Complies with IEC / EN 60947-2
• Vibration tested to IEC 60068-2-6
• Certified for industrial and infrastructure electrical distribution systems

Applications

Ideal for line protection, sub-distribution boards, machine circuits, control systems, and equipment requiring dependable short-circuit and overload protection. Suitable for both commercial building installations and industrial environments where high breaking capacity and compact DIN-rail mounting are required.