The Siemens 5SY4303-7 is a 3-pole miniature circuit breaker (MCB) from the Sentron series, designed for dependable overload and short-circuit protection. Rated at 3 amps, 400 VAC, with a 10 kA breaking capacity, it features a C-curve trip characteristic for circuits with moderate inrush currents. Compact DIN-rail mounting makes it ideal for industrial panels, machine control systems, and three-phase distribution boards.
Key Features
• Brand: Siemens (Sentron Series)
• Model: 5SY4303-7
• Current Rating: 3 A
• Voltage Rating: 400 VAC
• Trip Curve: C (medium inrush)
• Interrupting Capacity: 10 kA @ 400 V
• Poles: 3-Pole
• Mounting: DIN-rail, modular 3-unit width
• Standards: EN 60898-1 / IEC 60947-2
• Condition: New Surplus
Applications
• Industrial control panels
• Machine and equipment protection
• Three-phase distribution systems
• Retrofit or replacement in Siemens Sentron systems
The Siemens 5SY4303-7 is a 3-pole miniature circuit breaker (MCB) from the Sentron series, designed for dependable overload and short-circuit protection. Rated at 3 amps, 400 VAC, with a 10 kA breaking capacity, it features a C-curve trip characteristic for circuits with moderate inrush currents. Compact DIN-rail mounting makes it ideal for industrial panels, machine control systems, and three-phase distribution boards.
Key Features
• Brand: Siemens (Sentron Series)
• Model: 5SY4303-7
• Current Rating: 3 A
• Voltage Rating: 400 VAC
• Trip Curve: C (medium inrush)
• Interrupting Capacity: 10 kA @ 400 V
• Poles: 3-Pole
• Mounting: DIN-rail, modular 3-unit width
• Standards: EN 60898-1 / IEC 60947-2
• Condition: New Surplus
Applications
• Industrial control panels
• Machine and equipment protection
• Three-phase distribution systems
• Retrofit or replacement in Siemens Sentron systems
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