Why Choose the Mersen NH4AM50V630-8 NH Fuse-Link?
The Mersen NH4AM50V630-8 is a heavy-duty DIN NH aM low voltage fuse-link engineered specifically for the short-circuit protection of motor circuits and associated industrial electrical equipment. Designed to IEC and DIN standards, this NH4 fuse-link delivers dependable protection for high-power motors while allowing motor starting currents without nuisance operation.
As part of the trusted Mersen NH aM 500 V AC fuse range, the NH4AM50V630-8 incorporates a top-mounted blown-fuse indicator together with live gripping lugs for safe handling by qualified professionals using the appropriate NH fuse replacement device. Its robust ceramic construction provides excellent thermal stability and dependable long-term performance in demanding industrial environments.
Rated at 630 A with a 500 V AC operating voltage, the NH4AM50V630-8 is ideal for protecting large motors, motor control centres, industrial switchgear and heavy-duty OEM equipment where dedicated motor circuit protection is required.
Key Advantages
- Purpose-designed aM fuse-link for motor circuit protection.
- 630 A rated current for high-power motor applications.
- 500 V AC operating voltage.
- Provides dedicated short-circuit protection for motors.
- 120 kA AC breaking capacity.
- Top-mounted blown-fuse indicator.
- Live gripping lugs for safer maintenance.
- Suitable for industrial switchgear and motor control centres.
Key Features
- Mersen NH aM 500 V AC fuse-link series.
- Catalogue number: NH4AM50V630-8.
- Item number: E222115.
- NH4 fuse size.
- 630 A rated current.
- 500 V AC rated voltage.
- aM utilisation category.
- Top blown-fuse indicator.
- Live gripping lugs.
- Ceramic body with blade contacts.
Reliable Protection for Industrial Motor Circuits
aM fuse-links are specifically designed to provide short-circuit protection for motor circuits while allowing normal motor starting currents to pass without unnecessary operation. They are intended to be used in conjunction with suitable overload protection devices to provide complete motor protection.
The NH4AM50V630-8 is widely used in industrial motor control centres, heavy-duty switchgear and OEM machinery where reliable motor protection and high fault interruption capability are essential.
Typical Applications
- Large industrial motor circuits.
- Motor control centres.
- Industrial switchgear.
- Heavy-duty OEM machinery.
- Manufacturing facilities.
- Industrial distribution systems.
- Processing plants.
- Infrastructure electrical installations.
