3RA6120-1DP32 SIEMENS SIRIUS Compact Starter

Description

3RA6120-1DP32 SIEMENS SIRIUS Compact Starter

Product Dimensions：

Product Description (Detailed Explanation)

The SIRIUS 3RA61 is a “direct-on-line” (DOL) compact starter designed for the switching and protection of three-phase standard motors. This specific model features an adjustable electronic overload release and is rated for a current range of 1 to 4 Amps.

Unlike traditional motor starter assemblies that require three separate components and extensive wiring, the 3RA61 series uses a unified design. This reduces the number of electrical connections and significantly shrinks the footprint within the control cabinet. It also features a “permanently closed” main contact system that ensures high operational reliability and safety.

Product Parameters (Technical Specifications)

Product Advantages (Key Benefits)

• Space Saving: Combines three devices into one 45mm wide unit, reducing cabinet space requirements by up to 60%.

• Reduced Wiring: Integrated internal busbars eliminate the need for wiring between the circuit breaker, contactor, and overload relay, minimizing the risk of wiring errors.

• Electronic Overload Protection: Wide setting ranges (1:4 ratio) allow for fewer versions to cover a broad range of motor sizes, simplifying inventory management.

• High Operational Safety: Features “Safe Disconnection” according to IEC 60947-1 and is suitable for SIL 3 (Safety Integrity Level) applications when used with appropriate safety relays.

• Removable Terminals: Control and main circuit terminals are pluggable, allowing for fast replacement without disconnecting field cables.

Precautions (Important Notes)

• Current Setting: Always ensure the current setting dial matches the Full Load Amps (FLA) listed on the motor nameplate. Incorrect settings can lead to nuisance tripping or motor burnout.

• Trip Class Selection: Select between CLASS 10 (standard) and CLASS 20 (heavy starting) based on the motor’s load characteristics to ensure the thermal protection matches the startup duration.

• Cooling Clearance: Maintain the specified vertical clearance (typically 50mm above and below) to ensure adequate airflow for heat dissipation, especially when mounting multiple units side-by-side.

• Infeed System: If using the 3RV29 infeed system for multiple starters, ensure the total current does not exceed the maximum rating of the busbar.

Product Applications (Typical Use Cases)

• Conveyor Systems: Protecting small motors used in belt drives, rollers, and sorting systems in logistics centers.

• HVAC Pumps & Fans: Controlling water circulation pumps and ventilation fans in commercial building management systems.

• Machine Tools: Serving as the primary motor starter for spindles, coolant pumps, and chip conveyors.

• Packaging Machinery: High-frequency switching of motors in labeling, wrapping, and sealing machines where space is at a premium.

• Water Treatment: Managing small dosing pumps and agitators in chemical treatment plants.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

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