Shop 277 to 120 transformer

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$299.24
$403.00
Hammond Power Solutions C1F1C0WES - Transformer 1Kva 277-120/240V Copper
Essential Electric Supply
25% off
$299.24
$403.00
Hammond Power Solutions C1F1C0WES - Transformer 1Kva 277-120/240V Copper
Essential Electric Supply
$113.03
$216.00
MT0100A Siemens Control Transformer
Standard Electric Supply Co.
2
47% off
$113.03
$216.00
MT0100A Siemens Control Transformer
Standard Electric Supply Co.
2
$75.81
75 Watt - Step Down Transformer - 277 Volt To 120 Volt - For Use With Halogen Lamps - Hatch LS12075EN-277 | 1000 Bulbs
1000Bulbs.com
35
$75.81
75 Watt - Step Down Transformer - 277 Volt To 120 Volt - For Use With Halogen Lamps - Hatch LS12075EN-277 | 1000 Bulbs
1000Bulbs.com
35
$41.25
$45.24
75 Watt - Step Down Transformer 277 Volt To 120 Volt - For Use With Halogen Lamps - Hatch LS12075EN-277
Amazon.com
32
Free shipping
$41.25
$45.24
75 Watt - Step Down Transformer 277 Volt To 120 Volt - For Use With Halogen Lamps - Hatch LS12075EN-277
Amazon.com
32
$277.99
ACME ELECTRIC Low Voltage Distribution Transformer, 1 Kva, NEMA 3R, 120/240V AC, 120/208/240/277V AC, T279740S
Zoro.com
11
$277.99
ACME ELECTRIC Low Voltage Distribution Transformer, 1 Kva, NEMA 3R, 120/240V AC, 120/208/240/277V AC, T279740S
Zoro.com
11
$23.72
Advance Fluorescent Ballast: 120 To 277V AC, 1/2 Lamps Supported, 17 W_25 W_28 W_32 W Bulb Watt Model: ICN-2P32-N
Grainger
48
$23.72
Advance Fluorescent Ballast: 120 To 277V AC, 1/2 Lamps Supported, 17 W_25 W_28 W_32 W Bulb Watt Model: ICN-2P32-N
Grainger
48
$189.00
DAYTON Control Transformer: 208V AC/277V AC, 120V AC, Foot, 100 VA, Secondary Fuse Clips Model: 31EH13
Grainger
$189.00
DAYTON Control Transformer: 208V AC/277V AC, 120V AC, Foot, 100 VA, Secondary Fuse Clips Model: 31EH13
Grainger
$489.80
DAYTON Control Transformer: 208V AC/277V AC, 120V AC, Foot, 500 VA, Secondary Fuse Clips Model: 31EH19
Grainger
$489.80
DAYTON Control Transformer: 208V AC/277V AC, 120V AC, Foot, 500 VA, Secondary Fuse Clips Model: 31EH19
Grainger
$62.19
FUNCTIONAL DEVICES-RIB Class 2 Transformer, 100 VA, Not Rated, 24V AC, 120/240/277/480V AC, TR100VA004
Zoro.com
$62.19
FUNCTIONAL DEVICES-RIB Class 2 Transformer, 100 VA, Not Rated, 24V AC, 120/240/277/480V AC, TR100VA004
Zoro.com
$28.34
Fluorescent Ballast: 120 To 277V AC, 1/2 Lamps Supported, 59 W Bulb Watt Model: 4KGF7
Grainger
$28.34
Fluorescent Ballast: 120 To 277V AC, 1/2 Lamps Supported, 59 W Bulb Watt Model: 4KGF7
Grainger
$3,141.00
3-Phase 480 Y 277 - 208 Y 120 Solar Transformer 15 Kva
Maddox
$3,141.00
3-Phase 480 Y 277 - 208 Y 120 Solar Transformer 15 Kva
Maddox
$47.33
Powervolt Group: GP0100-PH00 100VA Industrial Control Transformer | Primary 277 VAC| Secondary 120 VAC | Panel Mount, Finger Safe | UL Listed
PowerVolt Group
$47.33
Powervolt Group: GP0100-PH00 100VA Industrial Control Transformer | Primary 277 VAC| Secondary 120 VAC | Panel Mount, Finger Safe | UL Listed
PowerVolt Group
$137.62
Nora Lighting NA-277/100MC Step Down Transformer 277V/120V 100W BY BUYRITE ELECTRIC
BuyRite Electric
$137.62
Nora Lighting NA-277/100MC Step Down Transformer 277V/120V 100W BY BUYRITE ELECTRIC
BuyRite Electric
$158.48
DAYTON Control Transformer: 208V AC/277V AC, 120V AC, Foot, 150 VA, Primary And Secondary Fuse Model: 31EH29
Grainger
$158.48
DAYTON Control Transformer: 208V AC/277V AC, 120V AC, Foot, 150 VA, Primary And Secondary Fuse Model: 31EH29
Grainger
$24.97
40-Watt 120-277 Multivolt 2-Lamp T12 High Efficiency Rapid Start Electronic Replacement Ballast
Home Depot
4
Free shipping
$24.97
40-Watt 120-277 Multivolt 2-Lamp T12 High Efficiency Rapid Start Electronic Replacement Ballast
Home Depot
4
$64.59
FUNCTIONAL DEVICES-RIB Class 2 Transformer, 100 VA, 24V AC, 120/208/240/277/480V AC, TR100VA015
Zoro.com
$64.59
FUNCTIONAL DEVICES-RIB Class 2 Transformer, 100 VA, 24V AC, 120/208/240/277/480V AC, TR100VA015
Zoro.com
$80.69
FUNCTIONAL DEVICES-RIB Class 2 Transformer, 100 VA, 24V AC, 120/208/240/277/480V AC, TR100VA009
Zoro.com
$80.69
FUNCTIONAL DEVICES-RIB Class 2 Transformer, 100 VA, 24V AC, 120/208/240/277/480V AC, TR100VA009
Zoro.com
$151.47
Nora Lighting NA-277/50MC Step Down Transformer 277V/120V 50W BY BUYRITE ELECTRIC
BuyRite Electric
$151.47
Nora Lighting NA-277/50MC Step Down Transformer 277V/120V 50W BY BUYRITE ELECTRIC
BuyRite Electric
$21.43
Kele | PTR50TADHCB | Transformer, 50Va, 120/240/277/480 VAC TO 24 VAC, Foot/Dual HUB Mount, Circuit Breaker | Power Supplies - Transformers
Kele
$21.43
Kele | PTR50TADHCB | Transformer, 50Va, 120/240/277/480 VAC TO 24 VAC, Foot/Dual HUB Mount, Circuit Breaker | Power Supplies - Transformers
Kele
$66.33
Magnitude Lighting M20L12-277 Max Load Magnetic Phase Dimmable Transformer W/ Dry/ Damp Rated, 20 Watts, 277VAC Input/ 12VAC Output BY BUYRITE
BuyRite Electric
$66.33
Magnitude Lighting M20L12-277 Max Load Magnetic Phase Dimmable Transformer W/ Dry/ Damp Rated, 20 Watts, 277VAC Input/ 12VAC Output BY BUYRITE
BuyRite Electric
$9,805.63
3-Phase 480 Y 277 - 208 Y 120 Solar Transformer 150 Kva
Maddox
$9,805.63
3-Phase 480 Y 277 - 208 Y 120 Solar Transformer 150 Kva
Maddox
$5,057.00
3-Phase 480 Y 277 - 208 Y 120 Solar Transformer 75 Kva
Maddox
$5,057.00
3-Phase 480 Y 277 - 208 Y 120 Solar Transformer 75 Kva
Maddox
$29.64
Functional Devices | TR20VA004 | Transformer 20Va, 277/240/208/120-24V,2 HUB,Class 2 UL List Us/Can,Inherent LIM | Power Supplies - Transformers
Kele
$29.64
Functional Devices | TR20VA004 | Transformer 20Va, 277/240/208/120-24V,2 HUB,Class 2 UL List Us/Can,Inherent LIM | Power Supplies - Transformers
Kele
$56.95
MARS 44514 120/277V 75 VA TRANSFORMER
1877ForParts.com
$56.95
MARS 44514 120/277V 75 VA TRANSFORMER
1877ForParts.com
$740.00
Hammond Power Solutions C1F003CES POTTED 1PH 3KVA 277-120X240 Commercial Encapsulated Distribution Transformers Mrosupply
MRO Supply MC
Free shipping
$740.00
Hammond Power Solutions C1F003CES POTTED 1PH 3KVA 277-120X240 Commercial Encapsulated Distribution Transformers Mrosupply
MRO Supply MC
Free shipping
$46.80
Functional Devices | TR40VA013 | Transformer 40Va, 208/240/277/480-120Vac, Single HUB, Circuit Breaker UL Listed | Power Supplies - Transformers
Kele
$46.80
Functional Devices | TR40VA013 | Transformer 40Va, 208/240/277/480-120Vac, Single HUB, Circuit Breaker UL Listed | Power Supplies - Transformers
Kele
$616.45
$662.00
Hammond Power Solutions C1F002WES - 2 Kva Transformer 277/240/208/120V-120/240V
Essential Electric Supply
$616.45
$662.00
Hammond Power Solutions C1F002WES - 2 Kva Transformer 277/240/208/120V-120/240V
Essential Electric Supply
$187.96
Powervolt Group: GP1000-PM60EN 1000VA GP Enclosed Control Transformer, 277V To 120/240V, NEMA 3R
PowerVolt Group
$187.96
Powervolt Group: GP1000-PM60EN 1000VA GP Enclosed Control Transformer, 277V To 120/240V, NEMA 3R
PowerVolt Group
$32.95
Robertson VT235 /A V2 (3P10133) Magnetic Step-Down Voltage Transformer - 25VA Max Load, 277V To 120V, Compact Enclosed Transformer For Lighting
Amazon.com
66
$32.95
Robertson VT235 /A V2 (3P10133) Magnetic Step-Down Voltage Transformer - 25VA Max Load, 277V To 120V, Compact Enclosed Transformer For Lighting
Amazon.com
66
$54.95
RIB Transformer TR40VA013, 40VA, 208/240/277/480-120VAC, 1 Hub, Foot Mount, Circuit Breaker
Global Industrial
$54.95
RIB Transformer TR40VA013, 40VA, 208/240/277/480-120VAC, 1 Hub, Foot Mount, Circuit Breaker
Global Industrial
$406.65
Acme Electric T279740S | 1-PHASE, 60 HZ, 120/208/240/277 PRI. V, 120/240 SEC. V, 1-PHASE 1.0KVA | Industrial Transformers
RS
11
$406.65
Acme Electric T279740S | 1-PHASE, 60 HZ, 120/208/240/277 PRI. V, 120/240 SEC. V, 1-PHASE 1.0KVA | Industrial Transformers
RS
11
$101.82
OTI50/120-277/1A4 DIM-1 L - Osram Ballast/Ignition Transformer Lighting (New)
Electrical.com
$101.82
OTI50/120-277/1A4 DIM-1 L - Osram Ballast/Ignition Transformer Lighting (New)
Electrical.com
$25.60
Functional Devices TR40VA004 Transformer, 40 VA, 277/240/208/120 To 24 Vac, Foot And Dual Threaded Hub Mount | Supplyhouse.Com
SupplyHouse.com
$25.60
Functional Devices TR40VA004 Transformer, 40 VA, 277/240/208/120 To 24 Vac, Foot And Dual Threaded Hub Mount | Supplyhouse.Com
SupplyHouse.com
$419.22
Solahd E750TF | TRANSFORMER 750VA 277/600V PRIMARY 120/115/110VAC SECONDARY INTERNATIONAL SERIES | Industrial Transformers
RS
$419.22
Solahd E750TF | TRANSFORMER 750VA 277/600V PRIMARY 120/115/110VAC SECONDARY INTERNATIONAL SERIES | Industrial Transformers
RS
$47.94
Hatch Lighting LS120-75EN-277 Power Transformers - Industrial
Mouser Electronics
$47.94
Hatch Lighting LS120-75EN-277 Power Transformers - Industrial
Mouser Electronics
$73.95
RIB Transformer TR100VA004, 100VA, 120/240/277/480-24V, Dual Hub, Foot Mount, Circuit Breaker
Global Industrial
21
$73.95
RIB Transformer TR100VA004, 100VA, 120/240/277/480-24V, Dual Hub, Foot Mount, Circuit Breaker
Global Industrial
21
2 kVA Isolation Transformer - 277V Primary - 120V Secondary - NEMA 3R - 1 Phase - Fully Potted
4:13
2 kVA Isolation Transformer - 277V Primary - 120V Secondary - NEMA …
28 viewsApr 2, 2025
YouTubeLarson Electronics Product Testing
Mixing 120 volts and 277 volts Circuits Safely
19:31
Mixing 120 volts and 277 volts Circuits Safely
36 views9 months ago
YouTubeBESA Research
Master Electrician explains why Commercial Buildings use 277 Volt, and not 120 Volt, Thoughts?
1:06
Master Electrician explains why Commercial Buildings use 277 Vol…
509K views5 months ago
YouTubeHendy The Sparky
Master Electrician Teaches his Son the Basics of 480-277 Volt Vs. 120-208 Volt Systems, Thoughts?
1:24
Master Electrician Teaches his Son the Basics of 480-277 Volt Vs. 120 …
38.3K views5 months ago
YouTubeHendy The Sparky
1 kVA Isolation Transformer - 277V Primary Voltage - 120V Secondary Voltage - NEMA 3R
2:26
1 kVA Isolation Transformer - 277V Primary Voltage - 120V Secondar…
3 views1 month ago
YouTubeLarson Electronics Product Testing
75 Watt 277 Volt to 120 Volt Transformer Step Down Transformer Replace for LS12075EN-277, Compatible with Hardwired LED, Lighting Controls for Hatch Lighting
0:18
75 Watt 277 Volt to 120 Volt Transformer Step Down Transfor…
2 months ago
amazon
How 3 Phase Transformers Work – why we need them
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Find in video from 05:00Step Up and Substation Transformers
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2M viewsJun 11, 2024
YouTubeThe Engineering Mindset
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Mixing 120 and 277 Volt Circuits in Relay Panels
10 views4 months ago
YouTubeBESA Research
11:46
Combining 120 Volts and 277 Volts at a Switch
82 views8 months ago
YouTubeBESA Research
9:24
Grounding 277 Volts and 120 Volts Systems per NEC
27 views6 months ago
YouTubeBESA Research
14:44
Mixing 277/480 volts and 120/208 volts Branch Circuits
69 views7 months ago
YouTubeBESA Research
13:23
Transformer Panel Purpose Stepping Down Voltage Explained
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YouTubeBESA Research
8:26
Running a 277volt light fixture on 120volt
47.1K viewsFeb 14, 2017
YouTubeParrot175
9:59
Understanding 480Y/277 Volt 3-Phase Systems Explained
3.1K viewsApr 17, 2025
YouTubeBESA Research
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277 Volt Transformer Wiring Color Codes Explained
220 views8 months ago
YouTubeBESA Research
26:42
Control Transformer Grounding Error Explained Rapid Coil Burnout
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19:05
Transformer Configurations for 277/480 Volts Wye Service
93 views5 months ago
YouTubeBESA Research
14:33
Using 120/277 Volts Switch at 24 Volts Explained
17 views7 months ago
YouTubeBESA Research
19:31
Transformer Sizing for Converting to Three Phase Power
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YouTubeBESA Research
12:17
Single Phase Transformer Diagrams
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YouTubePLC Automation Academy
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Multiport AC to DC transformer converts 120-277 volt AC to 12/24 …
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Shop 277 to 120 transformer

Sponsored
About our ads
$299.24
$403.00
Hammond Power Solutions C1F1C0WES - Transformer 1Kva 277-120/240V Copper
Essential Electric Supply
25% off
$299.24
$403.00
Hammond Power Solutions C1F1C0WES - Transformer 1Kva 277-120/240V Copper
Essential Electric Supply
$113.03
$216.00
MT0100A Siemens Control Transformer
Standard Electric Supply Co.
2
47% off
$113.03
$216.00
MT0100A Siemens Control Transformer
Standard Electric Supply Co.
2
$75.81
75 Watt - Step Down Transformer - 277 Volt To 120 Volt - For Use With Halogen Lamps - Hatch LS12075EN-277 | 1000 Bulbs
1000Bulbs.com
35
$75.81
75 Watt - Step Down Transformer - 277 Volt To 120 Volt - For Use With Halogen Lamps - Hatch LS12075EN-277 | 1000 Bulbs
1000Bulbs.com
35
$41.25
$45.24
75 Watt - Step Down Transformer 277 Volt To 120 Volt - For Use With Halogen Lamps - Hatch LS12075EN-277
Amazon.com
32
Free shipping
$41.25
$45.24
75 Watt - Step Down Transformer 277 Volt To 120 Volt - For Use With Halogen Lamps - Hatch LS12075EN-277
Amazon.com
32
$277.99
ACME ELECTRIC Low Voltage Distribution Transformer, 1 Kva, NEMA 3R, 120/240V AC, 120/208/240/277V AC, T279740S
Zoro.com
11
$277.99
ACME ELECTRIC Low Voltage Distribution Transformer, 1 Kva, NEMA 3R, 120/240V AC, 120/208/240/277V AC, T279740S
Zoro.com
11
$23.72
Advance Fluorescent Ballast: 120 To 277V AC, 1/2 Lamps Supported, 17 W_25 W_28 W_32 W Bulb Watt Model: ICN-2P32-N
Grainger
48
$23.72
Advance Fluorescent Ballast: 120 To 277V AC, 1/2 Lamps Supported, 17 W_25 W_28 W_32 W Bulb Watt Model: ICN-2P32-N
Grainger
48
$189.00
DAYTON Control Transformer: 208V AC/277V AC, 120V AC, Foot, 100 VA, Secondary Fuse Clips Model: 31EH13
Grainger
$189.00
DAYTON Control Transformer: 208V AC/277V AC, 120V AC, Foot, 100 VA, Secondary Fuse Clips Model: 31EH13
Grainger
$489.80
DAYTON Control Transformer: 208V AC/277V AC, 120V AC, Foot, 500 VA, Secondary Fuse Clips Model: 31EH19
Grainger
$489.80
DAYTON Control Transformer: 208V AC/277V AC, 120V AC, Foot, 500 VA, Secondary Fuse Clips Model: 31EH19
Grainger
$62.19
FUNCTIONAL DEVICES-RIB Class 2 Transformer, 100 VA, Not Rated, 24V AC, 120/240/277/480V AC, TR100VA004
Zoro.com
$62.19
FUNCTIONAL DEVICES-RIB Class 2 Transformer, 100 VA, Not Rated, 24V AC, 120/240/277/480V AC, TR100VA004
Zoro.com
$28.34
Fluorescent Ballast: 120 To 277V AC, 1/2 Lamps Supported, 59 W Bulb Watt Model: 4KGF7
Grainger
$28.34
Fluorescent Ballast: 120 To 277V AC, 1/2 Lamps Supported, 59 W Bulb Watt Model: 4KGF7
Grainger
$3,141.00
3-Phase 480 Y 277 - 208 Y 120 Solar Transformer 15 Kva
Maddox
$3,141.00
3-Phase 480 Y 277 - 208 Y 120 Solar Transformer 15 Kva
Maddox
$47.33
Powervolt Group: GP0100-PH00 100VA Industrial Control Transformer | Primary 277 VAC| Secondary 120 VAC | Panel Mount, Finger Safe | UL Listed
PowerVolt Group
$47.33
Powervolt Group: GP0100-PH00 100VA Industrial Control Transformer | Primary 277 VAC| Secondary 120 VAC | Panel Mount, Finger Safe | UL Listed
PowerVolt Group
$137.62
Nora Lighting NA-277/100MC Step Down Transformer 277V/120V 100W BY BUYRITE ELECTRIC
BuyRite Electric
$137.62
Nora Lighting NA-277/100MC Step Down Transformer 277V/120V 100W BY BUYRITE ELECTRIC
BuyRite Electric
$158.48
DAYTON Control Transformer: 208V AC/277V AC, 120V AC, Foot, 150 VA, Primary And Secondary Fuse Model: 31EH29
Grainger
$158.48
DAYTON Control Transformer: 208V AC/277V AC, 120V AC, Foot, 150 VA, Primary And Secondary Fuse Model: 31EH29
Grainger
$24.97
40-Watt 120-277 Multivolt 2-Lamp T12 High Efficiency Rapid Start Electronic Replacement Ballast
Home Depot
4
Free shipping
$24.97
40-Watt 120-277 Multivolt 2-Lamp T12 High Efficiency Rapid Start Electronic Replacement Ballast
Home Depot
4
$64.59
FUNCTIONAL DEVICES-RIB Class 2 Transformer, 100 VA, 24V AC, 120/208/240/277/480V AC, TR100VA015
Zoro.com
$64.59
FUNCTIONAL DEVICES-RIB Class 2 Transformer, 100 VA, 24V AC, 120/208/240/277/480V AC, TR100VA015
Zoro.com
$80.69
FUNCTIONAL DEVICES-RIB Class 2 Transformer, 100 VA, 24V AC, 120/208/240/277/480V AC, TR100VA009
Zoro.com
$80.69
FUNCTIONAL DEVICES-RIB Class 2 Transformer, 100 VA, 24V AC, 120/208/240/277/480V AC, TR100VA009
Zoro.com
$151.47
Nora Lighting NA-277/50MC Step Down Transformer 277V/120V 50W BY BUYRITE ELECTRIC
BuyRite Electric
$151.47
Nora Lighting NA-277/50MC Step Down Transformer 277V/120V 50W BY BUYRITE ELECTRIC
BuyRite Electric