Fuse link - NH2 aM 250A/690V - motor starter 004185428

Installation and motor safety – NH2 aM 250A/690V fuse link

The NH2 aM 250A/690V fuse link is a reliable element protecting electrical installations, especially those powering motors. Designed by ETI Polam, it meets the requirements of IEC 60269 and provides effective protection against the effects of short circuits. Its aM (motor) characteristic makes it ideal for protecting circuits with electric drives – it allows for short-term current overloads occurring during motor start-up, while reacting quickly to serious short circuits.

Construction and application

The NH2 fuse link is designed for a rated voltage of AC 690V and a rated current of 250A. The NH2 size is a standard in industry, ensuring compatibility with a wide range of fuse disconnectors. It has a dual operating indicator – combined (a spring blade and a red eye), which facilitates quick visual identification of a blown fuse. This solution is particularly useful when servicing installations, allowing for quick location of the damaged element.

It is worth remembering that aM fuse links are elements with incomplete short-circuit breaking capacity. This means that they require cooperation with an additional protective device (e.g., an overcurrent switch) to ensure full protection of the installation.

Key features and benefits

• Motor protection: aM characteristic dedicated to protecting motor circuits, tolerates short-term inrush overloads.
• Operating indicator: Dual indicator (combined) facilitates quick identification of a blown fuse – saves time during maintenance and repairs.
• Compliance with standards: Meets the requirements of IEC 60269, guaranteeing safety and reliability.
• Adapted to work in difficult conditions: Durable construction ensures stable operation even in demanding industrial environments.
• Universality: NH2 size ensures compatibility with a wide range of fuse disconnectors available on the market.
• Fast response to short circuit: Ensures quick disconnection of the circuit in the event of a short circuit, minimizing the risk of damage to equipment and installations.