SureStart, Three Phase Compressor Soft Starter for HVAC Units and Heat Pumps
BriskHeat now has an easily installed, compact three-phase compressor soft starter for HVAC units and heat pumps. For large three-phase compressors and motors, this soft starter reduces stress and heating, helping to extend its life.
- Voltage Range: 208 VAC - 230 VAC
- Max Load Amps: 38
- Max Starting Amps: 150
Since 1949
Additional Features:
- Reduces inrush start-current by up to 70%
- Automatically optimizes the starting current without a user interface
- Reduces required size of back-up generators or solar power systems
- Extends equipment life by reducing torque by up to 70%
- Provides brownout protection
- Protects compressors and motors from:
- Stalling
- Overheating
- Contactor Arching Damage
- Mechanical Shock
- Motor Reversal
Contactor: Secondary
Power Supply & Control Voltage: Auto-start at power-up
Start Current Reduction: 70% (single phase); 40% (three phase)
Start Torque Reduction: Up to 70%
Starts Per Hour: 15
Short Circuit Current Rating (SCCR): 5 kA
Operating Temperature Range: -4 to 140°F (-20 to 60°C) Storage
Temperature Range: -40° to 185°F (-40 to 85°C)
Life Expectancy at Maximum Load Rate: Minimum 100,000 cycles
Dimensions: 5.30 x 2.94 x 1.96 in (135 x 75 x 50 mm)
Weight: 1.11 lb (500 g)
IP Rating: IP20
| Part No. | Nominal Voltage Rating VAC | Phase | Frequency Hz ±3% | Maximum Load Amps | Maximum Starting Amps | Motor Current max FLA range | Motor Size hp | Minimum Startup Voltage | aximum High Voltage | Shutdown on Low Voltage |
| SS0B12-20SN | 110 – 115 | Single Phase | 60 | 20 | 35 | 12 – 20 A | 0.75 – 1.5 | 103 | 126 | 98 |
| SS1B08-16SN | 208 – 230 | Single Phase | 50/60 | 16 | 35 | 8 – 16 A | 1.75 – 3.5 | 180 | 253 | 175 |
| SS1B16-32SN | 208 – 230 | Single Phase | 50/60 | 32 | 65 | 16 – 32 A | 3.5 – 7 | 180 | 253 | 175 |
| SS2A04-28SN | 208 – 230 | Three Phase | 50/60 | 38 | 150 | 4 – 28 A | 2 – 10 | 187 | 253 | 176 |
| SS3A04-27SN | 380 | Three Phase | 50/60 | 38 | 150 | 4 – 27 A | 2 – 15 | 342 | 422 | 323 |
| SS4A04-34SN | 415 | Three Phase | 50 | 38 | 150 | 4 – 34 A | 2 – 20 | 373 | 460 | 353 |
| SS5A04-27SN | 460 | Three Phase | 60 | 38 | 150 | 4 – 27 A | 2 – 20 | 414 | 510 | 391 |
FAQ – Three-Phase Compressor Soft Starter
What is an RV soft starter used for?
It reduces inrush startup current by up to 70%, ensuring smoother compressor starts and minimizing stress and heat on HVAC equipment.
What voltage range does this soft starter support?
The unit supports a wide voltage range of 208 VAC to 460 VAC, making it suitable for diverse HVAC and heat pump applications.
How do soft starters protect compressors and motors?
Soft starters protect against stalling, overheating, contactor arching damage, mechanical shock, and motor reversal.
Is this product compatible with 3 phase scroll compressors?
Yes, it is specifically designed for 3 phase scroll compressor applications used in commercial HVAC systems.
How to optimize the starting current on a soft starter?
The unit automatically optimizes the starting current without any user interface, offering a set and forget installation process.
Is this soft starter IP rated?
The soft starter features an IP20 rating, appropriate for installation inside HVAC control enclosures.
How do you install an HVAC soft starter?
Installation is compact and easily installed, only requiring access to standard compressor wiring.
What is burnout protection for soft starters?
A suite of built-in electronic, thermal, and monitoring features designed to prevent damage to the soft starter and the connected motor.
Does this soft starter include brownout protection?
Yes, this soft starter includes brownout protection.