5SY8540-7

The SENTRON 5SY8540-7 is a miniature circuit breaker in the 5SY8 series. It features a 1+N pole design, a rated current of 40A, a C-characteristic trip curve, a rated short-circuit breaking capacity of 25kA, and a rated voltage of 230V. It is suitable for single-phase power distribution circuits and provides stable and reliable overload and short-circuit protection.

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Siemens SENTRON 5SY8540-7 Miniature Circuit Breaker (MCB) 1+N Pole 40A C-Curve

Product Positioning

The SENTRON 5SY8540-7 is a 1+N pole miniature circuit breaker from the Siemens SENTRON 5SY8 series, offering a rated current of 40A, a C-characteristic curve, and a high breaking capacity of 25kA, suitable for single-phase power distribution systems.

Core Product Advantages and Features

1+N configuration

Simultaneously disconnect the phase line and the neutral line to improve the safety of single-phase circuit maintenance.

25kA high breaking capacity

It can withstand large short-circuit current surges, improving the overall safety of the power distribution system.

C-characteristic jump curve

Suitable for general resistive and moderately inductive loads, such as household appliances and lighting circuits.

Compact 70mm depth design

It saves space in the distribution box and facilitates the upgrading and replacement of existing panels.

project	Specification
Extreme number	1+N poles
Rated current	40 A
breakout characteristic curve	C
Rated short-circuit breaking capacity	25 kA
Rated voltage	AC 230 V
Installation depth	70 mm

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