Siemens Miniature circuit breaker, 3-pole, 400V, 15kA, 50A Siemens
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Siemens

Siemens Miniature circuit breaker, 3-pole, 400V, 15kA, 50A Part number 5SY7350-7CC

EAN / Barcode 4001869449838
Product Type Control Panel
Product Class Miniature circuit breaker (MCB)
ETIM Class Miniature circuit breaker (MCB)
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Product Description

Product Overview

The 5SY7 series miniature circuit breaker is a robust protective device designed for three-phase electrical installations in commercial and industrial applications. This 3-pole circuit breaker provides comprehensive protection against overload and short circuit conditions with 15 kA breaking capacity, featuring C-curve tripping characteristics optimized for general applications including motor circuits, lighting, and power distribution systems.

Key Features & Specifications

  • Current Rating: 50A rated current with C-curve tripping characteristics
  • Configuration: 3-pole design for comprehensive three-phase protection
  • Voltage Rating: 400V AC rated voltage with 15 kA breaking capacity
  • Tripping Curve: C-curve characteristic suitable for general purpose applications
  • Compact Design: Space-efficient construction for commercial and industrial use
  • Protection Class: Standard IP protection for electrical enclosure installations
  • Breaking Capacity: 15 kA fault current interruption capability
  • Standards Compliance: Complies with international miniature circuit breaker standards
  • Applications: Ideal for commercial, industrial, and infrastructure installations

Technical Characteristics

  • Pole Configuration: 3-pole for three-phase protection
  • Voltage Type: AC operation with 400V three-phase rating
  • Frequency: 50/60 Hz standard frequency operation
  • Current Limiting: Provides current limitation during fault conditions
  • Installation: Standard DIN rail mounting for electrical panels
  • Connection: Screw terminal connections for secure wiring
  • Operating Temperature: Standard ambient temperature range for indoor use
  • Mechanical Life: High mechanical endurance for reliable operation

Applications & Features

Perfect for protecting three-phase circuits in commercial buildings, industrial facilities, and infrastructure applications. Ideal for motor protection, three-phase lighting systems, power distribution panels, and general three-phase loads where reliable overcurrent protection is essential. Features as part of the SENTRON protection components family, providing effective protection against overloads and short circuits with automatic tripping functionality.

Safety & Protection

Designed for comprehensive three-phase circuit protection with simultaneous disconnection of all three poles during fault conditions. Provides reliable isolation to prevent equipment damage and ensure personnel safety. The 3-pole configuration ensures complete three-phase circuit isolation for enhanced safety during maintenance operations.

Compliance & Certifications

  • Standards: RoHS compliant, WEEE compliant
  • Safety: Contains REACH substances (Lead) at <0.1% w/w - no risk when used as intended

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Technical Specifications

Additional equipment possibleYes
Ambient temperature during operating55 °C
Built-in depth70 mm
Connectable conductor cross section multi-wired35 mm²
Connectable conductor cross section solid-core0.75 mm²
Degree of protection (IP)IP20
eClass 1227-14-19-01
eClass 1427-14-19-01
eClass 627-14-19-01
eClass 7.127-14-19-01
eClass 827-14-19-01
eClass 927-14-19-01
eClass 9.127-14-19-01
ETIM 7EC000042
ETIM 8EC000042
ETIM 9EC000042
Frequency50 Hz
Number of poles (total)3
Number of protected poles3
Over voltage category3
Pollution degree3
Power loss14.4 W
Rated current50 A
Rated impulse withstand voltage Uimp4 kV
Rated insulation voltage Ui440 V
Rated short-circuit breaking capacity Icu according to IEC 60947-2 at 230 V20 kA
Rated short-circuit breaking capacity Icu according to IEC 60947-2 at 400 V20 kA
Rated voltage400 V
Release characteristicC
UNSPSC 1539-12-16-03
Voltage typeAC
Width in number of modular spacings3
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