 MRO Supply | 1376035 | 1 | | 1 | |
| Allied Electronics | 70150833 | 1 | | 1 | |
 Walker Industrial | KTK-2 | 10 | 3 to 5 Days | 10 | 1 @ $34.79 |
 Platt.com | 0471837 | 1 | 58 | 1 | 1 @ $32.15 |
 Carlton Bates Company | 05171242012 | 1 | | 1 | 1 @ $21.91 |
| Fuses Unlimited | KTK-2 | 1 | 94 | 1 | |
 AI Consolidated | KTK-2-BUSSMANN | 1 | -2 | 1 | 1 @ $18.54 |
 Digi-Key | 283-2461-ND | 1 | 14 | 1 | 1 @ $29.27, 5 @ $27.88, 10 @ $25.79, 50 @ $22.30, 100 @ $20.91, 250 @ $19.52, 500 @ $18.12, 1000 @ $17.43 |
| 1Source | KTK-2 | 1 | | 1 | |
 NRI Industrial | D350959 | 1 | | 1 | 1 @ $29.94 |
 ExcessParts.Net | KTK-2 | 1 | 4 | 1 | 1 @ $6.25 |
 Tundra | 381433 | 1 | | 1 | 1 @ $28.55 |
| FinditParts | 5950632 | 1 | | 1 | |
 Raptor Supplies | AE2FJH | 1 | | 1 | 1 @ $13.02 |
 AmazonTP | B0195UGQC6 | 1 | | 1 | 1 @ $5.45 |
 AmazonTP | B06XWT3CFG | 1 | | 1 | 1 @ $31.99 |
| Component Electronics | 505-66 | 1 | | 1 | |
| AmazonSC | B000LEYNOE | 1 | | 1 | 1 @ $9.97 |
| RS Online | 4588510 | 1 | | 1 | |
 grainger.ca | BUSKTK2 | 1 | | 1 | 1 @ $37.09 |
 Newark | 63R7756 | 1 | 24 | 1 | 1 @ $58.47, 5 @ $57.01, 10 @ $55.55, 25 @ $52.62, 50 @ $49.70, 100 @ $46.78 |
| Newark | 81AC8913 | 1 | | 1 | |
 Newark | 18J5857 | 1 | 10 | 1 | 1 @ $58.47, 5 @ $57.01, 10 @ $55.55, 25 @ $52.62, 50 @ $49.70, 100 @ $46.78 |
| French Gerleman | BUSSKTK2 | 1 | | 1 | |
 Onlinecomponents.com | KTK-2 | 1 | 42 | 1 | 1 @ $30.33, 10 @ $25.81, 100 @ $22.45, 1000 @ $21.89, 10000 @ $21.89 |
 Guardian | 74974015 | 1 | -2 | 1 | |
| Guardian | KTK-2 | 1 | | 1 | |
| uri.com | KTK2 | 1 | -2 | 1 | 1 @ $37.58 |
 kempstoncontrols.co.uk | KTK-2 | 1 | 39 | 1 | 1 @ $41.89 |
| standardelectricsupply.com | 8079 | 1 | | 1 | 1 @ $397.60 |
 Kelly Hayes | KTK-2 | 1 | | 1 | 1 @ $17.20 |
 bakedeco.com | 38-1433 | 1 | -2 | 1 | 1 @ $45.80 |
 turtle.com | BUS KTK-2 | 1 | | 1 | |
 Radwell | KTK-2 | 1 | 8 | 1 | 1 @ $36.00 |
 steinerelectric.com | 5014 | 1 | | 1 | 1 @ $26.97 |
| Widespread | KTK-2 | 1 | | 1 | |
| Component Electronics | 505-76 | 1 | | 1 | |
| Hutch and Son | KTK-2 | 1 | | 1 | |
| Crescent Electric Supply Co | 2140065 | 1 | | 1 | |
| RS Delivers | 458-8510 | 1 | 10 | 1 | 1 @ $15.68 |
 galesburgelectric.com | KTK-2 | 1 | -2 | 1 | 1 @ $9.19 |
| Guardian | KTK2 | 1 | | 1 | |
 globalcommercialparts.com | BUS_KTK2 | 1 | | 1 | 1 @ $23.72 |
| us.rs-online.com | 70150833 | 1 | 2 | 1 | 1 @ $52.70, 5 @ $50.19, 10 @ $46.43, 50 @ $40.15, 100 @ $37.64, 200 @ $35.13 |
 Tedss | 2026001325 | 1 | -2 | 1 | 1 @ $14.96 |
 National Supply Network | 74974015 | 10 | -2 | 10 | 1 @ $30.44 |
 Allfuses | KTK-2 | 1 | 273 | 1 | 1 @ $8.39 |
| Crescent Electric Supply Co | KTK-2 | 1 | | 1 | |
 Galco | KTK-2-BUSS | 1 | 16 | 1 | 1 @ $19.33 |
| Digi-Key | 265009 | 1 | 3 | 1 | 1 @ $56.22, 5 @ $53.41, 10 @ $50.59, 50 @ $42.16, 100 @ $39.35, 250 @ $36.54 |
 crescentelectric.com | 157481 | 1 | 10 | 1 | 1 @ $40.55 |
 superbreakers.com | KTK-2 | 1 | -2 | 1 | 1 @ $11.31 |
 ace4parts.com | KTK-2 | 1 | | 1 | 1 @ $25.94 |
| Airline Hydraulics | BUSSMANN KTK-2 | 1 | 1 | 1 | 1 @ $60.25 |
| Grainger | 4XC38 | 1 | | 1 | |
 Zoro | G1572907 | 1 | 2041 | 1 | 1 @ $16.29 |
