From the ManufacturerMersen A2D10R 250V 10A Rk1 Time Delay Fuse
AC Voltage Rating 277VAC
INTERRUPTING RATING 10 KILOAMPERE AT 120/240 VAC (UL)
Diameter 1
Now the new self-test & lockout feature enables the GFCI to automatically and continuously test itself to ensure that it is working properly
2P Standard Bolt On Circuit Breaker 40A 120/240VAC From the ManufacturerMersen A2D10R 250VBolt On Circuit Breaker, 40 Amps, Number of Poles 2, Circuit Breaker Type Standard, AC Voltage Rating 120 240VAC, DC Voltage Rating 48VDC, For Use With Square D NQOD Panelboards, Series QOB, Terminal Connection Lug, Max. AIR Rating 10 kA, Frame Size 100A QO, Min. Wire Size 8 AWG, Max. Wire Size 2 AWG, Length 3. 00 In., Width 1. 50 In., Depth 2. 91 In., Standards UL Listed, CSA Certified