Siemens SIRIUS Compact Reversing Starter 1.25A 24V DC 3RA6250-1BB33

Description

The Siemens 3RA6250-1BB33 is a high-efficiency compact reversing starter from the renowned SIRIUS series. It integrates a motor protection circuit breaker, reversing contactor pair, and an electronic overload relay into a single, compact housing. This device is designed for the protection and switching of three-phase motors up to 0.37 kW at 400V AC. Its fuseless construction simplifies design and reduces installation time and cabinet space.

Specifications

• Manufacturer: Siemens
• Product Line: SIRIUS
• Model: 3RA6250-1BB33
• Type: Compact Reversing Starter
• Control Supply Voltage: 24V DC
• Current Setting Range: 0.32 to 1.25 A
• Rated Operational Voltage (Ue): up to 690V AC
• Rated Power at 400V AC: 0.37 kW
• Connection Type: Screw terminals
• Integrated Auxiliary Contacts: 1 NO + 1 NC

Label Info

• Model: 3RA6250-1BB33
• EAN: 4011209715189
• Ie max: 1.25 A
• Ue max: 690V
• P (400V): 0.37 kW

Application

This compact reversing starter is ideal for applications requiring frequent starting and reversing of small motors, such as in conveyor systems, positioning drives, machine tools, and material handling equipment where space is at a premium.

Country of Origin

Made in Germany.

CO2 Impact

By choosing this reused industrial part, you are saving an estimated 34.6 kg of CO2 emissions. This is equivalent to the carbon absorbed by over 1.5 trees in a year. Make a sustainable choice for your operations.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

Question?
What is the main advantage of the 3RA6 compact starter over a traditional motor starter assembly?

Answer: The primary advantage is its compact design. The 3RA6 integrates the functions of a motor circuit breaker, two contactors (for reversing), and an electronic overload relay into a single, space-saving unit. This significantly reduces cabinet space, wiring time, and potential points of failure.

Answer: The motor's full-load ampere (FLA) rating is set using the rotary dial on the front of the unit. For this model, the setting range is adjustable from 0.32 to 1.25 Amperes, allowing for precise overload protection for small motors.

Answer: Yes, absolutely. This model (3RA6250-1BB33) has a 24V DC control voltage, which is standard for PLC digital outputs. This makes it ideal for integration into automated control systems.

Last Update: Friday, March 13, 2026

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