Siemens 5SP38352 Main Line Circuit Breaker 35A 2-Pole 230/400V

In residential and commercial electrical distribution boards, the Siemens 5SP38352 main line circuit breaker protects downstream circuits from overload and short-circuit currents. Installers and panel builders rely on this 2-pole device for single-phase 230 V or three-phase 400 V supplies up to 35 A.

Key specifications

• 2-pole (2P) main line circuit breaker
• Rated current: 35 A
• Rated voltage: 230/400 V AC
• Rated frequency: 50/60 Hz
• Short-circuit breaking capacity: 10 kA
• Tripping characteristic: fixed thermal-magnetic
• Mounting: DIN rail, 2 modules (36 mm width)
• Connection: screw terminals, up to 35 mm²
• Protection degree: IP20 terminals, IP40 front
• Operating temperature: -25 to +55 °C
• Electrical endurance: 10,000 switching cycles
• Mechanical endurance: 20,000 switching cycles
• Standards: IEC 60898-1, VDE 0641-11

Why choose it

The 5SP38352 combines a compact 2-module width with robust 10 kA breaking capacity, making it suitable for main incoming protection in small to medium distribution boards. Its screw terminals accept conductors up to 35 mm², simplifying installation with larger supply cables.

Ideal use cases

• Main line protection in residential consumer units
• Incoming protection for sub-distribution boards in commercial buildings
• Protection of circuits with high inrush currents, such as motors or transformers

Good to know

The device is designed for DIN rail mounting and occupies 2 modules (36 mm). It operates reliably within an ambient temperature range of -25 to +55 °C and meets IEC 60898-1 and VDE 0641-11 standards.