Siemens SENTRON 5SY4 Miniature Circuit Breaker, 1-Pole, 1 A, Type C, 400 V ac AC, 60 V dc DC, 10 kA Breaking Capacity

This miniature circuit-breaker is a Compact protective device for low-voltage electrical installations, designed to interrupt fault currents and protect wiring and equipment on DIN rail systems. It is intended for control panels and distribution boards in industrial and commercial settings where predictable overcurrent tripping and a small panel footprint are required.

• 10kA breaking capacity provides robust fault interruption
• Type C tripping curve protects against moderate inrush currents
• Rated 400V AC and 60V DC supports AC and DC circuits
• Single-pole design allows individual circuit protection
• Screw-terminal connection ensures secure conductor clamping

• Suitable for control panel branch-circuit protection in automation systems
• Ideal for protection of lighting and small motor circuits in industrial facilities
• used with DC auxiliary circuits requiring low-voltage overcurrent protection
• Can be used for modular distribution boards in electrical maintenance work

It clips directly onto a standard DIN rail for Rapid modular mounting within distribution enclosures.

The single-pole configuration interrupts only the live conductor and is used where NEUTRAL disconnection is not needed for the circuit topology.

Conductors are secured via screw terminals designed for reliable clamping of single- or multi-strand cables.

The unit has an IP20 rating, protecting against finger access but not against moisture or dust ingress

EN 60898; DIN VDE 0641; part 11; IEC 60898