Siemens circuit breaker reliable and compact three-phase protection for industrial and tertiary installations, with the following features:
Rated current: 50 Amps
Number of poles: 3P
Breaking capacity: 6 kA
Operating voltage: 400 V AC three-phase
Curve: C
Number of Modules: 3
Degree of protection: IP20
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The Siemens 50 A 3-pole magnetothermal circuit breaker offers robust and efficient protection for three-phase distribution systems. Designed for industrial and tertiary environments, this device from the SENTRON line is distinguished by reliability, ease of installation and high performance even under severe conditions.
With a C-curve tripping curve, this circuit breaker can withstand inrush currents up to 5-10 times the rated current, making it ideal for circuits with slightly inductive loads, such as motors or transformers. The breaking capacity of 6 kA ensures effective protection against short circuits even in systems with high fault energy.
Operating up to 440V three-phase AC and 62.5V DC per pole, this circuit breaker is compatible with a wide range of applications. It is designed for systems up to overvoltage category III, with pollution degree 2, making it suitable even for non-residential technical environments.
3 Modules, easily integrated into standard electrical panels. It is halogen-free and silicone-free, making it suitable even in settings where higher safety standards are required in case of fire. In addition, the structure is plumbable, increasing the level of security against tampering.
Screw terminals allow the connection of rigid, flexible and multiwire conductors up to 25 sq. mm² with a tightening torque between 2.5 and 3 Nm. This ensures a stable and secure connection. The IP20 (when conductors are connected) rating protects against accidental contact, enhancing safety during use.
Siemens circuit breaker is ideal for:
Electrical distribution in industrial environments
Tertiary and commercial installations
Protection of three-phase lines and subsystems
Machinery and control panels
Applications where high selectivity and short-circuit protection are needed
| Feature | Value |
|---|---|
| Number of poles | 3P |
| Rated current (In) | 50 A |
| Tripping curve | C |
| Breaking capacity (Icn) | 6 kA |
| Rated AC voltage | 400 V |
| Maximum AC voltage (multiphase) | 440 V |
| Max DC voltage | 62.5 V per pole |
| Limitation class | 3 |
| Overvoltage class | III |
| Pollution degree | 2 |
| Degree of protection | IP20 |
| Thermal dissipation (per pole) | 3,3 W |
| Material | Halogen-free, silicone-free |
| Conductor cross-section | 0.75 to 25 mm² (rigid, flexible, multiwire) |
| Terminal tightening torque | 2.5 to 3 N-m |
| Dimensions (HxWxD) | 90 x 54 x 76 mm |
| Ambient temperature | -25°C to +45°C |
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