| Allied Electronics | 70337171 | 1 | | 1 | |
 Newark | 39C6742 | 1 | | 1 | 1 @ $41.71, 10 @ $40.43, 25 @ $39.64 |
 Grainger | 6HK44 | 1 | 71 | 1 | 1 @ $47.05 |
 Zoro | G1430475 | 1 | 76 | 1 | 1 @ $29.25 |
 MRO Supply | 1077600 | 1 | | 1 | |
| RS Online | 3308650 | 1 | | 1 | |
 TME | XB4BA51 | 1 | 20 | 1 | 1 @ $13.78, 5 @ $12.07, 10 @ $11.27 |
| gordonelectricsupply.com | XB4BA51 | 1 | | 1 | |
 Raptor Supplies | AG7ERF | 1 | | 1 | 1 @ $61.86 |
 bscsource.com | XB4BA51 | 1 | | 1 | 1 @ $50.99 |
| sustainablesupply.com | C1211649 | 1 | -2 | 1 | 1 @ $46.47 |
| RS Delivers | 330-8650 | 1 | 101 | 1 | 1 @ $15.15 |
 kempstoncontrols.co.uk | XB4-BA51 | 1 | | 1 | 1 @ $17.89 |
 steinerelectric.com | 311516 | 1 | | 1 | 1 @ $42.10 |
| industrialautomationparts.com | AE-008783 | 1 | | 1 | |
| industrialrefrigerationparts.com | XB4BA51 | 1 | | 1 | 1 @ $47.06 |
 grainger.ca | TLQXB4BA51 | 1 | | 1 | 1 @ $33.15 |
 turtle.com | SCE XB4BA51 | 1 | -2 | 1 | 1 @ $0.00 |
 Digi-Key | 16614431 | 1 | 4 | 1 | 1 @ $41.17, 10 @ $37.16, 25 @ $35.60, 50 @ $33.38, 100 @ $32.27, 250 @ $30.49 |
 cappusa.com | 1677013 | 1 | | 1 | 1 @ $0.00 |
| Crescent Electric Supply Co | 1945528 | 1 | | 1 | |
 Galco | XB4BA51-SQD | 1 | | 1 | 1 @ $0.00 |
| us.rs-online.com | 70337171 | 1 | 16 | 1 | 1 @ $31.39, 10 @ $30.43, 25 @ $29.83 |
 mostelectric.com | XB4BA51 | 1 | 62 | 1 | 1 @ $25.56 |
 blackhawksupply.com | XB4BA51 | 1 | | 1 | |
 National Supply Network | 55489850 | 1 | -2 | 1 | 1 @ $39.97 |
 Newark | 66AH7514 | 1 | 3 | 1 | 1 @ $38.76, 10 @ $35.30, 25 @ $28.52, 50 @ $24.00 |
| standardelectricsupply.com | 337738 | 1 | | 1 | 1 @ $30.50 |
 crescentelectric.com | 137936 | 1 | 1 | 1 | 1 @ $44.88 |
 mayerelectric.com | SQDXB4BA51 | 1 | | 1 | |
 jotrin.com | JT33-XB4BA51 | 1 | 210 | 1 | |