Square D (Push On) Type QO 21 -15 Amp SP New 2 -15 Amp DP 3 -15 Amp Tandem (New) 1 -20 Amp SP 2 - 20 Amp Tandem (New) 2 - 30 Amp SP 1 - 30 Amp 3 pole Square D Type QOB Bolt on 5- 15 Amp SP 5 - 20 Amp SP 4 - 30 Amp DP