J7X5K1EA1A03 Micron 7.5 kVA Buck-Boost Transformer, Group C, 120x240V to 12/24V
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Micron J7X5K1EA1A03 is a 7.5 kVA Group C buck-boost transformer: 120 x 240 V primary, 12/24 V secondary, single phase, 600 V class. Micron has no JH number at 7.5 kVA, so this J number is the current part. It crosses to Acme T211688 and Eaton Cutler-Hammer S10N04A07N.
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J7X5K1EA1A03 specifications
| Part number | J7X5K1EA1A03 |
| Manufacturer | Micron Industries |
| Type | Buck-boost transformer, single phase |
| Voltage group | Group C |
| Primary | 120 x 240 V |
| Secondary | 12/24 V |
| Rating | 7.5 kVA |
| Insulation class | 600 V class |
| Load amps, boost or buck at 24 V | 312.5 A max (VA / 24 V) |
| Load amps, boost or buck at 12 V | 625 A max (VA / 12 V) |
| Dimensions | 16 in H x 10 3/8 in W x 9 7/8 in D |
| Weight | 123 lb |
| Warranty | 1 year (Micron) |
Source: FactoryMation Micron buck-boost Group C listing (J7X5K1EA1A03 weight, dimensions, group voltages) and Micron buck-boost product page. Load amps are the standard rule: transformer VA divided by the secondary volts in the connection. We confirm the Micron number and the wiring on every quote.
Cross reference
| Brand | Part number |
|---|---|
| Acme | T211688 |
| Eaton Cutler-Hammer | S10N04A07N |
| Hevi-Duty | HS19F7.5A |
| Jefferson | 416-2101-000 |
Source: Micron transformer cross reference MINT16A (January 2016), buck-boost section. Check ratings before you swap. Brand names identify the part being replaced; Applied Control is not affiliated with them.
How to use it
In buck or boost, the transformer carries only the added or removed volts. Size it on load amps x secondary volts. Wired as an isolation transformer it gives 12 or 24 VAC. Micron says buck-boost units are mainly for motor loads. Do not use one for a motor control circuit, to fix a swinging line, or to get a neutral on a delta system. On a 208Y/120 grounded system, a boost to 240 V leaves 139 V to ground. For three phase, Micron banks two units (open delta) or three units.
Common questions
Is there a JH number for J7X5K1EA1A03?
No. The 7.5 kVA Group C unit is still sold as J7X5K1EA1A03. We confirm the number on every quote.
What Micron part replaces Acme T211688?
J7X5K1EA1A03, 7.5 kVA, Group C.
How much load can a 7.5 kVA buck-boost carry?
About 312.5 A with the 24 V connection, or 625 A with the 12 V connection. Send the line volts, load volts and load amps and we check it.
Related: Buck-boost sizing and full cross reference · Micron control transformers by kVA · Micron · Buck-boost transformers
Request a Quote for J7X5K1EA1A03Book 30 Minutes to Review the Application