Siemens Miniature circuit breaker, C-curve, 3-pole, 400V, 10kA, 16A Part number 5SY4316-7

Product Overview

The Siemens 5SY4316-7 is a miniature circuit breaker of the SENTRON 5SY4 series — a 3-pole, 16 A breaker with C-characteristic and a breaking capacity of 10 kA at 400 V AC, designed for protection of three-phase circuits. It combines compact DIN-rail installation, reliable overcurrent and short-circuit protection, and screw-terminal wiring for robust, safe electrical distribution in industrial and building installations.

Key Features

• Three-pole miniature circuit breaker (3P)
• Rated current: 16 A
• C-characteristic tripping curve — suitable for general-purpose loads, mixed or with moderate inrush
• Rated operational voltage: 400 V AC (compatible with 230/400 V systems)
• Short-circuit breaking capacity: 10 kA — ensuring safe disconnection under fault conditions
• Screw-type terminals for secure and stable conductor connections
• Compact modular design suited for standard 35 mm DIN-rail mounting
• Modular width per pole, for space-efficient distribution boards
• Designed for reliable operation and long service life under typical load cycles
• Suitable for industrial, commercial, and residential three-phase circuit protection

Technical Specifications

• Article Number: 5SY4316-7
• Series: SENTRON 5SY4 miniature circuit breakers
• Number of Poles: 3 (3-pole)
• Rated Current (In): 16 A
• Tripping Curve: C-curve
• Rated Voltage (AC): 400 V AC (accepts 230/400 V supply systems)
• Breaking Capacity (Icu): 10 kA
• Terminal Type: Screw-type terminals
• Mounting: DIN-rail (35 mm standard rail) mounting
• Device Width: Modular width per pole (standard 5SY4 width)
• Protection Class (with conductors connected): IP20
• Switching Cycles (typical mechanical life): Consistent with 5SY4 series standards
• Use Case: Overcurrent and short-circuit protection for three-phase circuits — feeders, motor circuits, general power distribution

Compliance & Standards

• Part of Siemens SENTRON 5SY4 miniature circuit breaker family
• Engineered to meet international standards for low-voltage circuit protection (suitable for industrial and building installations)
• Designed for safe and reliable performance under typical three-phase distribution conditions

Applications

The 5SY4316-7 is suited for protecting three-phase loads in distribution panels, control cabinets, industrial installations, and residential or commercial electrical systems. It can safeguard motors, lighting circuits, small to medium loads, and general-purpose circuits against overload and short circuits, offering compact, DIN-rail compatible protection in three-phase networks.