RSE4812-B - DIN MTR SOFT START 480V 12A

Why Choose the Carlo Gavazzi RSE4812-B Soft Starter?

The Carlo Gavazzi RSE4812-B is a compact and highly reliable three-phase soft starter designed for controlled starting and stopping of induction motors in industrial automation systems. As part of the advanced Carlo Gavazzi RSE soft starter series, this unit helps reduce inrush current, minimise mechanical stress and improve the operational lifespan of motors and connected mechanical systems.

Developed for machine builders, panel manufacturers and industrial automation engineers, the RSE4812-B delivers smooth motor acceleration and deceleration for improved process control and reduced wear on couplings, belts, conveyors and drive assemblies. Its slim DIN rail mounted design allows efficient installation inside electrical cabinets and industrial control panels.

With a 12 A rated operational current and support for three-phase 277–480 V AC systems, the RSE4812-B is suitable for industrial motors up to approximately 5.5 kW. Integrated bypass functionality improves operating efficiency while reducing heat generation during continuous operation.

Key Advantages

• Compact three-phase motor soft starter for industrial automation systems.
• 12 A operational current rating suitable for motors up to 5.5 kW.
• Reduces electrical inrush current and mechanical stress.
• Integrated internal bypass relay improves efficiency.
• DIN rail mounting simplifies installation in control panels.
• Adjustable ramp-up and ramp-down functionality.
• Reliable soft starting and stopping for industrial induction motors.

Key Features

• Carlo Gavazzi RSE soft starter series.
• 12 A rated operating current.
• 277–480 V AC three-phase operating voltage.
• Supports motors up to 5.5 kW.
• Integrated semiconductor bypass system.
• Two-phase controlled soft starting.
• Adjustable start and stop ramp settings.
• LED indication for supply and operation status.
• Compact DIN rail mounted enclosure.

Technical Specifications

• Manufacturer: Carlo Gavazzi
• Series: RSE Soft Starters
• Model: RSE4812-B
• Product type: Three-phase motor soft starter
• Rated operational current: 12 A
• Motor rating: Up to 5.5 kW
• Operating voltage: 277–480 V AC
• Rated operating voltage (Ue): 408–552 V AC
• Input phases: 3-phase
• Control voltage: 24–110 V AC/DC and 110–480 V AC
• Frequency: 50 / 60 Hz
• Protection rating: IP20
• Mounting type: DIN rail mounting
• Controlled phases: 2-phase control
• Internal bypass: Yes
• Dimensions (H × W × D): approx. 82 × 45 × 102.5 mm
• Operating temperature: approx. -20 °C to +50 °C

Efficient Motor Starting for Industrial Automation

Soft starters such as the Carlo Gavazzi RSE4812-B help minimise the electrical and mechanical stress associated with direct-on-line motor starting. By gradually ramping motor voltage during startup and shutdown, the soft starter protects motors, couplings, gear systems and conveyors from sudden torque loads and excessive current peaks.

The RSE series is widely used in industrial machinery and automation systems where reliable motor control, compact installation and low maintenance are essential. Its integrated bypass functionality improves operational efficiency while reducing thermal load during continuous operation.

Typical Applications

• Industrial conveyors and material handling systems.
• Pumps and water treatment equipment.
• Fans and ventilation systems.
• Compressors and process machinery.
• Packaging and automation equipment.
• OEM machinery and industrial control systems.

Trusted by Industrial Automation Engineers

Carlo Gavazzi RSE soft starters are widely used in industrial automation systems where reliable motor starting, reduced mechanical wear and compact panel integration are essential for efficient machinery operation.