RSBT4032EV51HP - 3ph Comp. S/Start 400V 32A, 110-400V I/P+DIN UL

Why Choose the Carlo Gavazzi RSBT4032EV51HP Soft Starter?

The Carlo Gavazzi RSBT4032EV51HP is a high-performance three-phase soft starter for scroll compressors engineered for demanding HVAC, refrigeration and industrial compressor applications. As part of the advanced Carlo Gavazzi RSBT series, it delivers controlled compressor startup while reducing electrical inrush current, mechanical stress and pressure shock within refrigeration systems.

This intelligent soft starter features advanced three-phase controlled soft-start technology combined with a dedicated HP starting algorithm specifically optimised for scroll compressors operating under high-pressure startup conditions. The integrated internal bypass relay improves operating efficiency while minimising heat generation during continuous operation.

With a rated operational current of 32 A, an operating voltage range of 220–400 V AC, and support for three-phase motors up to approximately 15 kW at 400 V, the RSBT4032EV51HP is ideal for refrigeration compressors, heat pumps and commercial HVAC systems requiring dependable soft-start performance.

Key Advantages

• Designed specifically for three-phase scroll compressors.
• 32 A operational current rating suitable for HVAC and refrigeration systems.
• Helps reduce compressor inrush current and mechanical stress.
• HP algorithm optimised for high-pressure compressor starting.
• Integrated internal bypass relay improves efficiency and reduces heat dissipation.
• Three-phase controlled startup for improved motor performance.

Key Features

• Carlo Gavazzi RSBT soft starter series.
• Three-phase compressor soft starter.
• 32 A rated operational current.
• 220–400 V AC operating voltage.
• 24–400 V AC/DC control voltage.
• Three-phase controlled soft-start operation.
• Integrated HP compressor starting algorithm.
• Integrated internal bypass relay.
• DIN rail mounting compatibility.
• Compact industrial housing design.

Technical Specifications

• Manufacturer: Carlo Gavazzi
• Series: RSBT Soft Starters
• Model: RSBT4032EV51HP
• Product type: Three-phase compressor soft starter
• Rated operational current: 32 A
• Rated operating voltage: 187–440 V AC
• Control voltage: 24–400 V AC/DC
• Motor power at 230 V: 7.5 kW
• Motor power at 400 V: 15 kW
• Frequency: 50 / 60 Hz
• Controlled phases: 3-phase controlled
• Internal bypass: Yes
• Mounting type: DIN rail mount
• Protection rating: IP20
• Maximum starts per hour: 12
• Operating temperature: -20°C to +55°C
• Dimensions (W × H × D): approx. 45 × 125 × 81 mm
• Electrical connection: Screw terminals
• Supply voltage: Internal supply
• Standards: CE, cULus, CCC, EAC

Reliable Soft Starting for Scroll Compressors

Soft starters such as the Carlo Gavazzi RSBT4032EV51HP gradually control compressor startup voltage and current, helping reduce electrical stress, mechanical wear and nuisance tripping within HVAC and refrigeration systems. This improves compressor reliability while helping extend equipment service life.

The RSBT range is trusted by HVAC engineers and refrigeration specialists because of its dedicated compressor control functionality, integrated bypass technology and compact DIN rail installation format. The advanced HP starting algorithm makes this model particularly suitable for demanding compressor startup conditions.

Typical Applications

• Three-phase scroll compressors.
• Commercial refrigeration systems.
• Industrial cooling equipment.
• Air conditioning systems.
• Heat pump compressor control.
• HVAC compressor panels.

Trusted by HVAC and Refrigeration Professionals Worldwide

Carlo Gavazzi RSBT compressor soft starters are trusted by HVAC engineers and refrigeration specialists for dependable compressor startup control, reduced electrical stress and reliable long-term operation.