Overview Reviews Product Description Heinemann AM1-A8-L Breaker 40A 277V Single Pole 50/60Hz Delay 10Amps: 40Volts: 277Hertz: 50/60Delay: 10AM1A8L-UA-EPS Product Videos Custom Field Amp 40 Volts 277 Poles 1 Product Reviews Write a Review Write a Review × Heinemann Heinemann AM1-A8-L Breaker 40A 277V Single Pole 50/60Hz Delay 10 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *