277 VAC
HTR1309       277V 650W    Coral
HTR1309-1   277V 650W    White w/9" leads

HTR1440      277V 1000W    White 12" leads

          288 VAC
HTR1399      288V 650W

           380 VAC
HTR1049      380V 650W
HTR1049-1   380V 650W   White
HTR1049-3   380V 650W   Yellow       
HTR1050      380V 650W    w/K T/C
HTR1789      380V 650W   White

           480 VAC

HTR2544       480V 650W    White w/K T/C Flat   
HTR1227       480V 750W   Yellow
HTR1228       480V 750W   Yellow w/ K T/C

HTR1245       480V 800W    Coral
HTR1246       480V 800W    Coral  w/K T/C

HTR1409       480V 1000W   Coral w/9" leads     
HTR1409-1    480V 1000W   White w/K T/C
HTR1409-2    480V 1000W   
HTR1409-4    480V 1000W   Yellow
HTR1409-5    480V 1000W   Yellow w/K T/C
HTR1409-6    480V 1000W   Coral w/K T/C
HTR1409-7    480V 1000W  White 7" leads #8 ring term
HTR1409-8    480V 1000W   Black

                120 VAC
HTR1345      120V 650W    White

             208 VAC
HTR1520      208V 650W    Coral
HTR1520-1   208V 650W    Yellow
HTR1521      208V 650W    Coral w/K T/C
HTR1521-1   208V 650W    Yellow w/K T/C

          225/240 VAC
HTR1458      240V 250W   Coral

HTR1415      230V 300W   White Flat

HTR1414      230V 400W   White Flat
HTR1760      240V 400W   White w/ K T/C
HTR1760-1   240V 400W   Coral w/J T/C
HTR1175      240V 400W   Coral
HTR1175-2   240V 400W   White
HTR1175-3   240V 400W   Yellow

HTR1250-1   225V 500W   White
HTR1053      230V 500W    White w/J T/C 
HTR1051      240V 500W    White   
HTR1250      240V 500W    White   w/9" leads
HTR1250-2   240V 500W    Coral
HTR1109      240V 500W    White   w/ K T/C

HTR1038      220V 650W    White
HTR1015-1   240V 650W    White
HTR1015-2   240V 650W    Coral w/6" leads 
HTR1015-3   240V 650W    White w/9" leads #10 ring
HTR1015-4   240V 650W   White
HTR1249      240V 650W    Yellow
HTR1249-1   240V 650W    Yellow w/K T/C
HTR1043      240V 650W    White w/K T/C     
HTR1043-1   240V 650W    White w/ K T/C #10 ring 
HTR1043-2   240V 650W    White w/ J T/C
HTR1043-3   240V 650W    Coral w/ K T/C
HTR1043-4   240V 650W    w/Replaceable K T/C

HTR1220      240V 750W    White
HTR1696      240V 750W    Yellow
HTR1696-1   240V 750W    Yellow  w/K T/C

HTR1281      240V 800W    Coral
HTR1280      240V 800W    Coral  w/K T/C

HTR1822      240V 850W   White

HTR1163      240V 1000W    Coral w/9" leads
HTR1163-1   240V 1000W    White w/9" leads #8 rings
HTR1163-2   240V 1000W    Coral   w/K T/C
HTR1163-5   240V 1000W    White     
HTR1163-6   240V 1000W    Coral
HTR1163-7   240V 1000W    White w/K T/C
HTR1163-10 240V 1000W    Coral   w/K T/C 6" leads
HTR1231      240V 1000W    Yellow

Note:
Coral & Yellow heaters are color changing style
220/230/240v are considered 240v
440/460/480v are considered 480v

unless specified:
6" lead,  Pin terminal, Concave

HTR1133

         225/240 VAC

HTR1014-6   240V 325W  Yellow w/K T/C
HTR1014-7   240V 325W   w/Replaceable K T/C
HTR1055-1   240V 325W   w/Replaceable J T/C
HTR1055-2   240V 325W   Coral w/K T/C     
HTR1055      240V 325W   White   w/K T/C
HTR1393      240V 325W   Yellow

HTR1134     240V 500W    Yellow
HTR1134-1   240V 500W   White  w/9" leads
HTR1134-2   240V 500W   White
HTR1134-3   240V 500W   Coral
HTR1134-5   240V 500W    Yellow w/K T/C
HTR1261      240V 500W   White w/K T/C
HTR1261-1   240V 500W   Coral w/K T/C
HTR1466      230V 500W   White w/J T/C

         480 VAC

HTR1106-1   480V 325W   White
HTR1106-2   480V 325W   Coral
HTR1106-3   480V 325W   Yellow

HTR1477      480V 400W   Coral w/K T/C
HTR1487      480V 400W   Coral
HTR1475      480V 500W   Yellow
HTR1476      480V 500W   Yellow w/K T/C
HTR1424      480V 550W   White w/9" leads