NEMA Frame Rerates

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THREE-PHASE FRAME SIZES
TEFC Motors – General Purpose

3600 RPM & 1800 RPM

  3600 RPM 1800 RPM
NEMA FRAME PROGRAM (HP) “T”
Frames 1964 Rerate		 “U”
Frames 1952 Rerate		 Original NEMA Frames “T”
Frames 1964 Rerate		 “U”
Frames 1952 Rerate		 Original NEMA Frames
1 – – – 143T 182 203
1 1/2 143T 182 203 145T 184 204
2 145T 184 204 145T 184 224
3 182T 184 224 182T 213 225
5 184T 213 225 184T 215 254
7 1/2 213T 215 254 213T 254U 284
10 215T 254U 284 215T 256U 324
15 254T 256U 324 254T 284U 326
20 256T 286U 326 256T 286U 364
25 284TS 324U 365S 284T 324U 365
30 286TS 326S 404S 286T 326U 404
40 324TS 364US 405S 324T 364U 404
50 326TS 365US 444S 326T 365US 444S
60 364TS 405US 445S 364TS 405US 445S
75 365TS 444US 504S 365TS 444US 504S
100 405TS 445US 505S 405TS 445US 505S
125 444TS – – 444TS – –
150 445TS – – 445TS – –

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1200 and 900 RPM

  1200 RPM 900 RPM
NEMA FRAME PROGRAM (HP) “T”
Frames 1964 Rerate		 “U”
Frames 1952 Rerate		 Original NEMA Frames “T”
Frames 1964 Rerate		 “U”
Frames 1952 Rerate		 Original NEMA Frames
1 145T 184 204 182T 213 225
1 1/2 182T 184 224 184T 213 254
2 184T 213 225 213T 215 254
3 213T 215 254 215T 254U 284
5 215T 254U 284 254T 256U 324
7 1/2 254T 256U 324 256T 284U 326
10 256T 284U 326 284T 286U 364
15 284T 324U 364 286T 326U 365
20 286T 326U 365 324T 364U 404
25 324T 364U 404 326T 365U 405
30 326T 365U 405 364T 404U 444
40 364T 404U 444 365T 405U 445
50 365T 405U 445 404T 444U 504U
60 404T 444U 504U 405T 445U 505
75 405T 445U 505 444T – –
100 444T – – 445T – –
125 445T – – – – –
150 – – – – – –

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