Overview
The Siemens 5SY4304-7 is a 3-pole miniature circuit breaker (MCB) from the Siemens Sentron line, rated 4 amps, 400 VAC with a C-curve trip characteristic, and a 10 kA breaking capacity. It’s designed for medium inrush loads—perfect for industrial control panels, three-phase protection, and reliable circuit isolation. Compact design (3 module width) and robust build make it a solid choice for OEM, retrofit, or replacement applications.
Key Features
• Brand: Siemens (Sentron series)
• Model: 5SY4304-7
• Poles: 3-pole
• Current Rating: 4 A
• Trip Curve: C-curve
• Voltage: 400 V AC (suitable for 230/400 V systems)
• Interrupting Capacity: 10 kA @ 400 V AC
• Modular width: 3 units; DIN-rail mountable
• Physical dimensions: ~70 mm depth, weight ~0.46 kg
• Operating temp: −40 to +70 °C
• Condition: New Surplus
Applications
• Protection for three-phase circuits in industrial equipment
• Inrush-capable loads (motors, transformers, fans)
• Electrical distribution panels and machine control systems
• OEM or panel builder replacement parts
Overview
The Siemens 5SY4304-7 is a 3-pole miniature circuit breaker (MCB) from the Siemens Sentron line, rated 4 amps, 400 VAC with a C-curve trip characteristic, and a 10 kA breaking capacity. It’s designed for medium inrush loads—perfect for industrial control panels, three-phase protection, and reliable circuit isolation. Compact design (3 module width) and robust build make it a solid choice for OEM, retrofit, or replacement applications.
Key Features
• Brand: Siemens (Sentron series)
• Model: 5SY4304-7
• Poles: 3-pole
• Current Rating: 4 A
• Trip Curve: C-curve
• Voltage: 400 V AC (suitable for 230/400 V systems)
• Interrupting Capacity: 10 kA @ 400 V AC
• Modular width: 3 units; DIN-rail mountable
• Physical dimensions: ~70 mm depth, weight ~0.46 kg
• Operating temp: −40 to +70 °C
• Condition: New Surplus
Applications
• Protection for three-phase circuits in industrial equipment
• Inrush-capable loads (motors, transformers, fans)
• Electrical distribution panels and machine control systems
• OEM or panel builder replacement parts
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