Why Choose the Mersen ATQR7 Class CC Time-Delay Fuse?
The Mersen ATQR7 is a high-performance Class CC time-delay fuse designed to provide dependable overcurrent protection for industrial control circuits, control transformers and inductive electrical loads. As part of the established Mersen Amp-Trap 2000® ATQR series, it combines time-delay operation with current-limiting performance to protect electrical equipment against sustained overloads and short-circuit faults.
The ATQR7 is engineered to tolerate the temporary inrush currents produced when transformers, contactors, solenoids and similar devices are energised. This helps reduce unnecessary fuse operation during normal equipment start-up while maintaining reliable circuit interruption when a genuine electrical fault occurs.
With a rated current of 7 A and voltage ratings of up to 600 V AC and 300 V DC, the Mersen ATQR7 is suitable for demanding industrial and commercial electrical installations. Its compact Class CC format supports space-efficient installation within control panels, distribution equipment and OEM machinery.
Key Advantages
- Reliable Class CC time-delay fuse for industrial branch circuit protection.
- 7 A current rating suitable 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 control panel designs.
Key Features
- Mersen Amp-Trap 2000® ATQR series.
- 7 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 fault conditions.
- Ferrule-style cylindrical construction.
- Rejection-style format for compatible Class CC fuse holders.
Reliable Protection for Industrial Electrical Systems
The Mersen ATQR7 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, contactors 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.
