Siemens SENTRON 5SY5 Miniature Circuit Breaker, 2-Pole, 16A, Type C, 400V ac AC, 440 V dc DC, 10 kA Breaking Capacity

This miniature circuit breaker provides overcurrent protection for AC and DC systems in industrial and infrastructure environments. It operates on a 400V AC supply and up to 440V DC, offering thermal-magnetic type C tripping for loads with moderate inrush currents. The device is intended for DIN rail mounting and supports two-pole switching for simultaneous disconnection of both conductors.

• 10kA breaking capacity for short-circuit fault interruption
• Type C tripping characteristic for moderate inrush protection
• Rated for 400V AC and 440V DC for mixed-voltage systems
• Screw terminals enabling secure conductor connections
• Halogen-free and silicone-free materials for safer installations

• Suitable for domestic distribution boards requiring selective protection
• Ideal for small industrial control panels with DC supplies
• Used with motor control circuits prone to inrush currents
• Can be used for retrofit DIN rail installations in buildings
• Suitable for infrastructure switchgear requiring two-pole isolation

It supports 50/60 Hz operation.

Solid, stranded and finely stranded conductors from 0.75 mm² up to 35 mm², with core-end processing up to 25 mm².

Rated operational current reduces with higher temperatures, for example from 15.02 A at 40°C down to 12.86 A at 60°C.

It tolerates up to 95% RH at temperatures up to 55°C and operates between -40°C and 70°C.