3RT1076-6NB36

Siemens has engineered the 3RT1076-6NB36 contactor as part of its SIRIUS series, tailored for demanding power applications. This component features a S12 frame size, making it suitable for substantial load handling. With a nominal operating current of 500 A at an operational voltage of 400 V, it supports a power output of 250 kW.

The control input voltage can range from 21 to 27.3V DC, facilitating versatility in various control systems. Its maximum voltage rating in the main circuit reaches 1000 volts, while transient overvoltage resistance is rated at an impressive 8 kV, protecting connected equipment from voltage spikes.

Equipped with two normally open and two normally closed auxiliary contacts, the 3RT1076-6NB36 enhances functionality by integrating additional control options on-board. The contactor comes with a Type 2 short-circuit safeguard, utilizing a gG fuse rated for 500 A at 690 V, ensuring protection against overloads.

Designed for simple installation, it features bolt-on mounting that allows for side-by-side configurations, optimizing space in electrical panels. With a permissible operating temperature range of -25°C to +60°C, it can function reliably across various environmental conditions.

This contactor has an IP00 protection rating, which extends to IP20 when covered, ensuring adequate defense against dust and access to hazardous parts. It can withstand vibrations of up to 13.4g for 5 milliseconds and 6.5g over 10 milliseconds, showcasing robustness under operational stress. The mechanical endurance is projected to reach 10 million switching cycles, ensuring long-lasting performance. With a weight of approximately 10.484 kg, this contactor represents a solid and reliable choice for industrial applications.