Why Choose the Mersen ATQR5 Class CC Time-Delay Fuse?
The Mersen ATQR5 is a high-performance Class CC time-delay fuse designed to provide reliable overcurrent protection for industrial control circuits, transformers and inductive electrical loads. Part of the established Mersen Amp-Trap 2000® ATQR series, it combines time-delay operation with current-limiting performance to protect equipment against sustained overloads and short-circuit faults.
The ATQR5 is engineered to tolerate the temporary inrush currents that occur when control transformers, contactors, solenoids and similar devices are energised. This helps reduce unnecessary fuse operation during normal start-up conditions while ensuring dependable circuit interruption when a genuine electrical fault occurs.
With a rated current of 5 A and voltage ratings of up to 600 V AC and 300 V DC, the Mersen ATQR5 is suitable for demanding industrial and commercial installations. Its compact Class CC format supports space-efficient installation inside control panels, distribution equipment and OEM machinery.
Key Advantages
- Reliable Class CC time-delay fuse for industrial circuit protection.
- 5 A current rating for control circuits and inductive loads.
- 600 V AC and 300 V DC voltage ratings.
- Time-delay operation helps withstand temporary transformer and equipment inrush currents.
- Current-limiting performance helps minimise equipment damage during fault conditions.
- Compact construction supports space-saving electrical panel designs.
Key Features
- Mersen Amp-Trap 2000® ATQR series.
- 5 A rated current.
- 600 V AC rated voltage.
- 300 V DC rated voltage.
- Class CC time-delay operating characteristic.
- High interrupting capacity for demanding industrial applications.
- Ferrule-style cylindrical construction.
- Rejection-style format for compatible Class CC fuse holders.
Reliable Protection for Industrial Electrical Systems
The Mersen ATQR5 provides coordinated overcurrent protection for electrical circuits that experience brief but normal current surges during energisation. Its time-delay characteristic allows temporary inrush currents to pass without opening the circuit unnecessarily, making it particularly suitable for control transformers and other inductive equipment.
During sustained overload or short-circuit conditions, the fuse interrupts the electrical current to help limit thermal and mechanical stress on conductors, switching devices and connected machinery. Its Class CC rejection design also helps prevent the installation of unsuitable fuse classes when used with a compatible rejection fuse holder.
Typical Applications
- Industrial control panels.
- Control transformers.
- Motor control circuits.
- Contactors, relays and solenoids.
- Heating and ventilation equipment.
- OEM machinery and automation systems.
