Industrial and Commercial Portable Power Transformers
Portable Power Transformers are commonly placed in projects/ job sites where an existing permanent voltage (600VAC or 480VAC) needs to be reduced "stepped down" to (120VAC, 125/250VAC or 120/208VAC) and conveniently electrical power to various construction and maintenance power requirements.
Models are available in any voltage configuration (Wye "Y" or Delta) primary or secondary and can be assembled with Camloks devices and customer's choice of NEMA output receptacle. Low voltage dry type transformers range in size from 15KVA up to 500KVA. Other sizes are also available upon request.
Tough enough for the rental and industrial markets, the Cage-Style Transformer is protected by a hefty powder coated cage, And talk about portability: this unit features lifting points, fork pockets and lockable casters, making it easily transportable and can be used for urgent needs like mass casualty disasters and pandemic response, including medical testing/screening centers and temporary hospitals. It also offers a convenient, built-in tray for cable and tools.
Models are available in any voltage configuration (Wye "Y" or Delta) primary or secondary and can be assembled with Camloks devices and customer's choice of NEMA output receptacle. Low voltage dry type transformers range in size from 15KVA up to 500KVA. Other sizes are also available upon request.
Tough enough for the rental and industrial markets, the Cage-Style Transformer is protected by a hefty powder coated cage, And talk about portability: this unit features lifting points, fork pockets and lockable casters, making it easily transportable and can be used for urgent needs like mass casualty disasters and pandemic response, including medical testing/screening centers and temporary hospitals. It also offers a convenient, built-in tray for cable and tools.
Input 480V output 208V 3-phase step down transformer

- Automatic transfer switches for redundancy in power
- Transformers to provide multiple voltage options
- Power conditioners for sensitive electronic apparatus
Input: 480V 3-phase
Output: Multiple 208V 3-phase connections using 5-wire sets of cam-type output receptacles
Special Applications
If the transformer is to be installed outdoors, it must be suitable for outdoor application. Be on the alert for high ambient temperatures (above
40° C), high altitude conditions (above 3300 feet), and high humidity or salt spray conditions. Refer to NEMA ST20 and ANSI C57.96 for high ambient or high altitude applications. Special transformers are normally required for such applications.
40° C), high altitude conditions (above 3300 feet), and high humidity or salt spray conditions. Refer to NEMA ST20 and ANSI C57.96 for high ambient or high altitude applications. Special transformers are normally required for such applications.
Model |
Capacity |
Power Input |
Power Output |
Weight |
30 | 30 kVA | 36 amp, 480V 3 phase | 83 amp, 208V 2 phase | 465 |
45 | 45 kVA | 54 amp 480V 3 phase | 124 amp, 208V 3 phase | 580 |
75 | 75 kVA | 113 amp, 480V 3 phase | 208 amp, 208V 2 phase | 1000 |
150 | 150 kVA | 181 amp, 480V 3 phase | 417 amp, 208V 3 phase | 1250 |
225 | 225 kVA | 271 amp, 480V 3 phase | 625 amp, 208V 3 phase | 1425 |
Rent 30 KVA amp Temporary Rental Spot Mobil Portable Transfer Switches, Transformers and Power Conditioners 480 Volt 3 phase

30 AMP TRANSFORMER
Step Down Transformers 30 KVA 36 amp, 480V 3 phase
The manufacturers of transformers recommend that the connected wattage not exceed 90% of the Transformer's rated wattage. For example, don't connect more than 450 watts to a 500 watt transformer.
Three Phase Transformers
To select Three Phase transformers follow the same steps as Single Phase, except use 3 phase Amps/KVA chart or calculate the load as follows:
3 Phase KVA = Volts x Amps x 1.732/1000
Load Amps = (3 Phase KVA x 1000)/Volts x 1.732
The manufacturers of transformers recommend that the connected wattage not exceed 90% of the Transformer's rated wattage. For example, don't connect more than 450 watts to a 500 watt transformer.
Three Phase Transformers
To select Three Phase transformers follow the same steps as Single Phase, except use 3 phase Amps/KVA chart or calculate the load as follows:
3 Phase KVA = Volts x Amps x 1.732/1000
Load Amps = (3 Phase KVA x 1000)/Volts x 1.732
Rent 45 KVA amp Temporary Rental Spot Mobil Portable Transfer Switches, Transformers and Power Conditioners 480 Volt 3 phase

45 AMP TRANSFORMER
Step Down Transformers 45 KVA 54 amp, 480V 3 phase
The manufacturers of transformers recommend that the connected wattage not exceed 90% of the Transformer's rated wattage. For example, don't connect more than 450 watts to a 500 watt transformer.
Three Phase Transformers
To select Three Phase transformers follow the same steps as Single Phase, except use 3 phase Amps/KVA chart or calculate the load as follows:
3 Phase KVA = Volts x Amps x 1.732/1000
Load Amps = (3 Phase KVA x 1000)/Volts x 1.732
The manufacturers of transformers recommend that the connected wattage not exceed 90% of the Transformer's rated wattage. For example, don't connect more than 450 watts to a 500 watt transformer.
Three Phase Transformers
To select Three Phase transformers follow the same steps as Single Phase, except use 3 phase Amps/KVA chart or calculate the load as follows:
3 Phase KVA = Volts x Amps x 1.732/1000
Load Amps = (3 Phase KVA x 1000)/Volts x 1.732
Rent 75 KVA amp Temporary Rental Spot Mobil Portable Transfer Switches, Transformers and Power Conditioners 480 Volt 3 phase

75 AMP TRANSFORMER
Step Down Transformers 75 KVA 113 amp, 480V 3 phase
The manufacturers of transformers recommend that the connected wattage not exceed 90% of the Transformer's rated wattage. For example, don't connect more than 450 watts to a 500 watt transformer.
Three Phase Transformers
To select Three Phase transformers follow the same steps as Single Phase, except use 3 phase Amps/KVA chart or calculate the load as follows:
3 Phase KVA = Volts x Amps x 1.732/1000
Load Amps = (3 Phase KVA x 1000)/Volts x 1.732
The manufacturers of transformers recommend that the connected wattage not exceed 90% of the Transformer's rated wattage. For example, don't connect more than 450 watts to a 500 watt transformer.
Three Phase Transformers
To select Three Phase transformers follow the same steps as Single Phase, except use 3 phase Amps/KVA chart or calculate the load as follows:
3 Phase KVA = Volts x Amps x 1.732/1000
Load Amps = (3 Phase KVA x 1000)/Volts x 1.732
Rent 150 KVA amp Temporary Rental Spot Mobil Portable Transfer Switches, Transformers and Power Conditioners 480 Volt 3 phase

150 AMP TRANSFORMER
Step Down Transformers 150 KVA 181 amp, 480V 3 phase
The manufacturers of transformers recommend that the connected wattage not exceed 90% of the Transformer's rated wattage. For example, don't connect more than 450 watts to a 500 watt transformer.
Three Phase Transformers
To select Three Phase transformers follow the same steps as Single Phase, except use 3 phase Amps/KVA chart or calculate the load as follows:
3 Phase KVA = Volts x Amps x 1.732/1000
Load Amps = (3 Phase KVA x 1000)/Volts x 1.732
The manufacturers of transformers recommend that the connected wattage not exceed 90% of the Transformer's rated wattage. For example, don't connect more than 450 watts to a 500 watt transformer.
Three Phase Transformers
To select Three Phase transformers follow the same steps as Single Phase, except use 3 phase Amps/KVA chart or calculate the load as follows:
3 Phase KVA = Volts x Amps x 1.732/1000
Load Amps = (3 Phase KVA x 1000)/Volts x 1.732
Rent AT225 KVA amp Temporary Rental Spot Mobil Portable Transfer Switches, Transformers and Power Conditioners 480 Volt 3 phase

225 AMP TRANSFORMER
Step Down Transformers 225 KVA 271 amp, 480V 3 phase
The manufacturers of transformers recommend that the connected wattage not exceed 90% of the Transformer's rated wattage. For example, don't connect more than 450 watts to a 500 watt transformer.
Three Phase Transformers
To select Three Phase transformers follow the same steps as Single Phase, except use 3 phase Amps/KVA chart or calculate the load as follows:
3 Phase KVA = Volts x Amps x 1.732/1000
Load Amps = (3 Phase KVA x 1000)/Volts x 1.732
The manufacturers of transformers recommend that the connected wattage not exceed 90% of the Transformer's rated wattage. For example, don't connect more than 450 watts to a 500 watt transformer.
Three Phase Transformers
To select Three Phase transformers follow the same steps as Single Phase, except use 3 phase Amps/KVA chart or calculate the load as follows:
3 Phase KVA = Volts x Amps x 1.732/1000
Load Amps = (3 Phase KVA x 1000)/Volts x 1.732
Selecting Transformer KVA Rating
Three phase Transformer:
KVA = (FLA x Volts x 1.732) ÷ 1000 Usually, some provision for future increase in load should be made when selecting the transformer. For example, if maximum load current is 50 amps and load voltage is 120, single phase, the requirement is 6,000 VA or 6 KVA.
KVA = (FLA x Volts x 1.732) ÷ 1000 Usually, some provision for future increase in load should be made when selecting the transformer. For example, if maximum load current is 50 amps and load voltage is 120, single phase, the requirement is 6,000 VA or 6 KVA.