50NH1M is a type of fuse designed and manufactured by the Mersen Company, formerly known as Ferraz Shawmut. It is one of the most commonly used fuses that Mersen makes and is found in many industries and applications.

The 50NH1M is a medium-grade fuse that features interrupting ratings up to 200kA at 500VAC. This makes it perfect for medium-duty circuits and those requiring robust overcurrent protection. It is also UL Listed and CSA Certified, which means it meets all of the required safety standards for installation. The 50NH1M has a broad range of applications, from motor starters to lighting systems, and can be used in both indoor and outdoor environments.

The 50NH1M features a steel housing and a silver-nickel-cadmium alloy contact for maximum current carrying capability and heat dissipation. The fuse also has a one-piece housing with a nickel-plated handle for easy installation and removal. Additionally, the 50NH1M has a temperature-compensated melting element that enables the fuse to operate quickly and reliably in conditions where temperature can vary. This temperature-compensated design also allows the user to accurately set the tripping current point.

The 50NH1M is designed with a specialized construction to provide reliable protection from the most common types of overcurrents. The fuse is also designed with a dual-action (annular and radial) interruption to trigger the fuse quickly in case of a fault. Additionally, it has a wide base for simple mounting and reset and its quick-acting design allows for immediate clearing of the fault.

The working principle of the 50NH1M is based on an electromechanical technology called blow-out fuse design. It uses the force of a magnetic field generated by the current flow in the conductor to open the fuse when the current exceeds the pre-set limit. Once opened, the current flow is interrupted and the fault is cleared. This mechanism of failure is not only quick-acting, it is also reliable and efficient.

The 50NH1M is an ideal choice for a wide range of applications such as motor starters, lighting systems, and industrial supplies. It is UL Listed and CSA Certified and offers superior overcurrent protection. It also features a one-piece housing with a nickel-plated handle for easy installation and removal. The 50NH1M is suitable for indoor and outdoor applications and it uses a temperature-compensated melting element for reliable and accurate tripping.