Siemens Miniature circuit breaker, C-curve, 3-pole, 400V, 32A Part number 5SY4332-7

Product Overview

The Siemens 5SY4332-7 is a Siemens SENTRON 5SY4 miniature circuit breaker, 3-pole, 32 A, with C-characteristic and a 10 kA breaking capacity. It is designed for three-phase overload and short-circuit protection in industrial, commercial and residential power distribution systems, offering reliable protection in compact DIN-rail installations.

Key Features

• Three-pole miniature circuit breaker (3P)
• Rated current: 32 A
• C-characteristic curve for circuits with moderate inrush currents and mixed loads
• Rated operational voltage: 400 V AC
• Breaking capacity: 10 kA
• Screw terminals for secure conductor connections
• Modular width suitable for standard DIN-rail mounting
• Touch-safe terminal design with halogen-free insulating materials
• High mechanical endurance typical of the SENTRON 5SY4 series
• Compatible with Siemens auxiliary accessories such as auxiliary switches and signal contacts

Technical Specifications

• Article Number: 5SY4332-7
• Poles: 3
• Rated Current (In): 32 A
• Tripping Curve: C characteristic
• Rated 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 when conductors are connected
• Insulation Ratings: Suitable for overvoltage category III and pollution degree 3
• Mechanical Durability: Approximately 10 000 switching cycles typical for the 5SY4 range
• Operating Temperature Range: –25 °C to +55 °C

Compliance & Certifications

• Part of the Siemens SENTRON 5SY4 MCB series
• Designed according to international standards for miniature circuit breakers
• Suitable for global low-voltage distribution applications

Applications

The Siemens 5SY4332-7 is ideal for three-phase distribution circuits requiring 32 A protection, including industrial machinery, commercial installations, building distribution boards, motor circuits and general-purpose loads. Its robust design and compact DIN-rail compatibility make it suitable for new installations and retrofit upgrades in multi-phase systems.