Best 480 to 400 Volt Transformer Options for Industrial Power Needs
Choosing the right transformer to convert 480V systems to 240V or 120V levels requires a balance of capacity, efficiency, and durability. The models below cover a range of VA ratings and primary/secondary configurations suitable for HVAC, control panels, and light industrial equipment. Each entry highlights construction quality, voltage flexibility, and key features to help you compare performance at a glance.
| Product | Brand | Primary / Secondary | VA Rating |
|---|---|---|---|
| Industrial Control Transformer .050 kVA, 240 X 480 Primary Volts – 120 X 240 Secondary Volts | Hubbell Acme Electric | 240/480 V to 120/240 V | 50–5000 VA |
| TR50VA008 Transformer, 50Va, 480/277/240/208 to 120 Vac | Functional Devices | 480/277/240/208 V to 120 V | 50 VA |
| ABB 9T58K2810 Low Voltage Dry Type Transformer 0.5 kVA, 240×480-120/240 | ABB | 240/480 V to 120/240 V | 0.5 kVA (500 VA) |
| Industrial Power Transformer, Domestic, 240 X 480, 230 X 460, 220 X 440 Primary Volts 50/60Hz, 120/115/110 Secondary | SIEMENS | 240/480 V to 120/110/115 V | Up to 500 VA |
| Industrial Power Transformer, Domestic, 240 X 480 Primary Volts 50/60Hz, 24 Secondary | SIEMENS | 240/480 V to 24 V | 150 VA |
Industrial Control Transformer: 240/480 to 120/240
The Hubbell Acme Electric control transformer delivers a broad VA range from 50 to 5000 VA and operates at 50/60 Hz. Its epoxy encapsulated core and coil assembly helps protect against contaminants, while silicon steel lamination minimizes core losses for improved efficiency. This model is designed for integrally mounted, 2-pole primary block configurations, making it suitable for installation in control panels and electrical cabinets demanding reliable step-down performance.
TR50VA008: 480/277/240/208 to 120 Vac
The Functional Devices TR50VA008 provides 50 VA with multiple primary voltage options (480, 277, 240, 208 V) to 120 V output. This transformer is designed for circuit protection and easy mounting, with a compact footprint suitable for panel installations. It ships with a sturdy build and practical dimensions for quick integration into control systems and small industrial loads.
ABB 9T58K2810: 0.5 kVA, 240×480 to 120/240
The ABB 9T58K2810 is a 1-phase isolation step-down transformer rated at 0.5 kVA, designed for light-duty loads. Its encapsulated core and coil construction protects against moisture and corrosion, providing quiet operation and resilience in challenging environments. It supports flexible mounting and is suitable for machine tools, control panels, and HVAC-related circuits, with a robust, durable design.
Siemens Power Transformer, 240 X 480, 500 VA Range
The Siemens domestic transformer family offers a 240 x 480 primary with 120/115/110 V secondary, rated up to 500 VA. Silicon steel-laminated cores and copper magnet wire optimize efficiency, while the rugged design ensures dependable operation in control panels, lighting, and HVAC applications. This model balances compact size with reliable voltage regulation for steady performance in industrial settings.
Siemens MT0075A: 75 VA, 240×480 to 120/110/115 V
The Siemens MT0075A is a compact 75 VA transformer designed for domestic and small-control applications. It provides stable 120/110/115 V secondary outputs from a 240/480 V primary, with a silicon steel-laminated core and copper windings for improved efficiency. The unit is well-suited for control panels, signaling circuits, and light industrial equipment requiring dependable isolation and voltage regulation.
Buying Guide: Key Considerations When Selecting 480 to 400 Volt Transformers
- Voltage compatibility: Confirm primary and secondary voltages align with your system’s 480V input and the desired 120/240 V outputs. Look for models offering multiple secondary voltages when flexibility is needed.
- VA rating and load: Choose a transformer with adequate VA rating for your load. Oversizing by 20–25% can accommodate startup surges and future expansion, while avoiding excess heat and inefficiency.
- Isolation and safety: If system safety is critical, select transformers with robust isolation ratings and moisture-resistant, encapsulated cores to withstand challenging environments and reduce EMI.
- Construction and durability: Moisture resistance, seismic qualification, and durable terminals contribute to long service life in industrial settings. Encapsulated coils reduce corrosion risk in harsh conditions.
- Mounting and space: Consider enclosure dimensions, mounting options (foot, hub, or integrally mounted blocks), and whether the unit fits into existing control panels or equipment racks.
- Efficiency and regulation: Look for lamination quality, copper windings, and core design that minimize losses and provide stable secondary voltage under load and brief overloads.
- Reliability and serviceability: Check for warranty coverage, availability of replacement parts, and ease of installation to minimize downtime during maintenance.
- Compliance: Ensure units meet applicable industry standards and safety qualifications (IP rating, seismic qualification, and regional electrical codes).
These selections emphasize reliable performance in 480 V to 120–240 V stepped-down applications, with attention to durability, efficiency, and installation practicality in American facilities.