Circuit breaker S 303 3P B 63A 6000A TX3 403408

Overcurrent switch – reliable protection for electrical installations

This three-pole overcurrent switch from the S 303 series, with a rated current of 63A and B characteristic, is a key element ensuring safety in every electrical installation. Designed to protect against the effects of overloads and short circuits, it performs well in both domestic and industrial applications. The breaking capacity of 6kA at 400V and 10kA at 230V guarantees effective disconnection of the circuit in the event of a failure.

Design and installation – comfort for the professional and user

The switch has been designed with easy mounting on a TH35 rail in mind. Compatibility with the bottom latch and terminal covers facilitate and speed up the wiring process. The possibility of powering from the top or bottom increases flexibility during installation in various conditions. Compact dimensions (width 3 modules, depth 44 mm) allow for efficient use of space in the switchgear cabinet.

Characteristics and application – adaptation to needs

The B tripping characteristic means that the switch reacts quickly to current increase, but is more tolerant to short-term current surges – which is particularly important when connecting devices with motors or other elements generating high inrush currents. The rated voltage of 400V AC and the insulation voltage of 500V ensure safe operation in standard electrical installations. Additionally, the possibility of equipping with accessories from the DX³ series (auxiliary contacts, release units) allows for expanding the functionality of the switch and adapting it to specific application requirements. The IP20 degree of protection provides protection against accidental contact.