Siemens Miniature circuit breaker, C-curve, 3-pole, 400V, 10A Part number 5SY4310-7

Product Overview

The Siemens 5SY4310-7 is a Siemens SENTRON 5SY4 miniature circuit breaker, 3-pole, 10 A, with C-characteristic and a 10 kA breaking capacity. It provides reliable overload and short-circuit protection in three-phase AC electrical installations and is suitable for distribution boards, motor circuits, control panels and industrial electrical systems requiring dependable multi-pole protection.

Key Features

• Three-pole miniature circuit breaker (3P)
• Rated current: 10 A
• C-characteristic curve for circuits with moderate inrush currents
• Rated operational voltage: 400 V AC (also suitable for 230/400 V systems)
• Breaking capacity: 10 kA
• Screw-type terminals for secure conductor connections
• 1.5 module width per pole — compact for DIN-rail installations
• Touch-safe terminal design with halogen-free insulating materials
• Designed for long mechanical service life and high switching endurance
• Compatible with Siemens auxiliary accessories such as auxiliary switches and signal contacts

Technical Specifications

• Article Number: 5SY4310-7
• Poles: 3
• Rated Current (In): 10 A
• Tripping Curve: C characteristic
• Rated Operational Voltage: 400 V AC
• Short-Circuit Breaking Capacity: 10 kA
• Terminal Type: Screw terminals for 1 … 25 mm² conductors
• Mounting: DIN-rail (35 mm)
• Protection Class: IP20 (with conductors connected)
• Insulation Rating: Suitable for industrial overvoltage category III and pollution degree 3
• Mechanical Durability: Approximately 10 000 switching cycles (typical for the 5SY4 series)
• Operating Temperature Range: –25 °C to +55 °C
• Design: Modular, compact, industry-standard form factor

Compliance & Certifications

• Part of the Siemens SENTRON 5SY4 MCB range
• Designed according to international standards for miniature circuit breakers
• Suitable for low-voltage protection systems in residential, commercial and industrial installations

Applications

The Siemens 5SY4310-7 is ideal for protecting three-phase circuits supplying motors, lighting loads, distribution feeders, and general-purpose industrial equipment. Its 10 A rating and robust design make it suitable for compact distribution boards, switchgear assemblies and multi-pole protection in machinery and building installations.