The Heinman Canada Corporation AM1-A3-A-20-2 is a 1-pole circuit breaker with tamper-proof terminals. It is the logical choice for high quality service entrance and panel board installations, as well as control and protection. The precisely tailored time delays and ability to interrupt high currents make it ideal for critical applications. The AM/R is designed to be a world product and solve the toughest equipment circuit protection problems around the globe. It combines the proven high quality and reliability of the former AM series with the spacing, dielectric and interrupt requirements of International standards.