GE THQB21WY20 circuit breaker poles:(1) THERMAL MAGNETIC, (1) NON AUTOMATIC 20 AMPERE; BOX TERMINAL;USED ON AL/AQ/ALC/AQC/SPECTRA SERIES PANELBOARD; THQB MODEL Size:2 INCH W X 2 3/8 INCH D X 3 9/32 INCH H poles:(1) THERMAL MAGNETIC, (1) NON AUTOMATIC Size:2 INCH W X 2 3/8 INCH D X 3 9/32 INCH H