5SL6440-7RC
The SIEMENS SENTRON 5SL6440-7RC is a 4-pole miniature circuit breaker with a rated current of 40A, C-curve operating characteristics, a short-circuit breaking capacity of 6kA, and can be connected to conductors from 0.75 to 35mm². It is suitable for three-phase power distribution circuit protection.
Product Positioning
The Siemens SENTRON 5SL6440-7RC is a 4-pole miniature circuit breaker with a rated current of 40A and a short-circuit breaking capacity of 6kA. It is suitable for small circuit protection in 400V three-phase power distribution systems.
Core Product Advantages and Features
4-pole three-phase protection design
Synchronous switching between three phases and the neutral line, suitable for main switch or branch protection in 400V three-phase power distribution systems.
40A circuit protection specification
This is the smallest current rating in the series, suitable for small three-phase load circuits or branch protection configurations.
6kA short circuit breaking capacity
Tested according to EN 60898 and IEC 60947-2 standards, it reliably interrupts short-circuit faults in three-phase circuits.
Wide conductor compatibility
It can accept conductors from 0.75 to 35 mm², offering high wiring flexibility and adaptability to various distribution box wiring plans.
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