3RB2056-2FF2

Siemens SIRIUS 3RB2056-2FF2 S6 Solid State Overload Relay Class 20E Busbar Type
Siemens SIRIUS 3RB2056-2FF2 S6 Solid State Overload Relay Class 20E Busbar Type

The Siemens SIRIUS 3RB2056-2FF2 solid-state overload relay is an S6 size relay with a Class 20E trip rating. It features a main circuit bus connection, a current setting of 50 to 200 amps, and triple protection against overload, phase loss, and imbalance. It is suitable for heavy-duty starting motor circuits.

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Siemens SIRIUS 3RB2056-2FF2 S6 Solid State Overload Relay Class 20E Busbar Type
Product Positioning

The Siemens SIRIUS 3RB2056-2FF2 is an S6-size solid-state electronic overload relay with a busbar-type main circuit connection, suitable for overload, phase loss and imbalance protection of high-current three-phase motors.

Core Product Advantages and Features
Busbar direct installation
The main circuit uses a busbar connection, which can be directly installed on Siemens 3RT large contactors, making wiring simpler and faster.
Class 20E (Level Breakthrough)
It is outclassed to Class 20E, making it suitable for heavy-duty startups and high-inertia loads, extending startup time while still providing reliable protection.
Triple protection function
It also provides overload protection, phase loss protection, and current imbalance protection to comprehensively safeguard the motor's operational safety.
Manual/Automatic Reset
It features both manual and automatic reset modes, providing greater flexibility for maintenance and testing, and includes fault status indicators.
project Specification
Current setting range 50...200 A
Size Specifications S6
Break away from level Class 20E
Main circuit connection method Busbar
Auxiliary contacts 1 NO + 1 NC
Rated operating voltage 1000 V AC
Installation method Contactor direct mounting / independent mounting

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