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Three Phase (415V, 50Hz, 4-34 FLA) Compressor Soft Starter for HVAC Units and Heat Pumps

Norske Backer 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: 415 VAC
Max Load Amps: 38
Max starting amps: 150

Part Number
SS4A04-34SN

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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
Provides brownout protection
Protects compressors and motors from:
Stalling
Overheating
Contacting arching damage
Mechanical shock
Motor reversal

For 3-phase scroll compressor applications

Part No.	Nominal Voltage Rating CAV	Frequency Hz±3%	Maximum Load Amps	Maximum Starting Amps	Motor Current, max FLA range	Motor Size hp	Minimum Starting Voltage	Maximum High Voltage	Shutdown on Low Voltage
SS2A04-28SN	208-230	50/60	38	150	4 - 28 A	2 to 10	187	253	176
SS3A04-27SN	380	50/60	38	150	4 - 27 A	2 to 15	342	422	323
SS4A04-34SN	415	50	38	150	4 - 34 A	2 to 20	373	460	353
SS5A04-27SN	460	60	38	150	4 - 27 A	2 to 20	414	510	391