MERSEN

The Mersen ATQ series is a time-delay midget fuse, while the ATM series is a fast-acting midget fuse. Both are rated 600 V AC (ATM also rated 600 V DC) and have dimensions of 13/32 in x 1 1/2 in. Time-delay fuses like the ATQ tolerate temporary overloads, making them suitable for motor circuits, while fast-acting ATM fuses respond quickly to overcurrents and are used in control panels and instrumentation where rapid protection is needed.

The Mersen USCC1 is a 1-pole UL Class CC fuse block rated 600 V AC, and the USCC2 is a 2-pole version with the same voltage rating. Both feature DIN rail mounting and pressure plate termination. They are finger-safe and accept Class CC fuses, which are typically used for branch circuit protection in industrial control panels. The USCC2 provides two poles in a single block, saving panel space compared to two separate 1-pole blocks.

The Mersen A30QS series consists of very-fast-acting bolt-on square fuses rated 300 V AC/DC. These fuses are available with an indicating function that provides visual blown-fuse detection. They are used for overcurrent protection in applications requiring high-speed interruption, such as semiconductor devices, DC systems, and industrial equipment where fast clearing is necessary to prevent damage. The bolt-on mounting ensures secure electrical connection in high-vibration environments.

R-rated fuses, such as the Mersen DAR0 series, are medium-voltage fuses designed for motor starter protection. They are rated 5.08 kV AC and 700 A in the DAR0 example. R-rated fuses have a specific time-current characteristic that coordinates with motor overload relays and contactors, providing short-circuit protection while allowing motor starting currents. They are general-purpose fuses with visual indication for blown fuse status, used in medium-voltage motor starters and related equipment.

Yes, the Mersen GGM and GSB series fast-acting cylindrical fuses are RoHS compliant. These fuses have a glass body and are rated 250 V AC with a 5.1 mm x 20.1 mm form factor. The GGM series includes a 400 mA rating (part number GGM4/10), and the GSB series includes a 630 mA rating (part number GSB630/1000). They are used for overcurrent protection in control panels, power supplies, and instrumentation circuits where space is limited and fast response is required.

Yes — 3G Electric (S) Pte. Ltd. supplies MERSEN products. We stock the MERSEN catalog and supply genuine factory-original products with full manufacturer warranty and technical support.