
MERSEN
Pertanyaan yang Sering Diajukan
Pertanyaan umum tentang MERSEN dari 3G Electric.
What are the key differences between MERSEN's A15QS and A70Q series semiconductor fuses?
The A15QS series is rated for 150 V AC/DC and available in current ratings up to 200 A, while the A70Q series is rated for 700 V AC and 650 V DC, with current ratings up to 80 A. Both are fast-acting bolt-on fuses designed for semiconductor protection, but the A70Q offers higher voltage handling for applications like variable frequency drives, whereas the A15QS is suited for lower-voltage power supplies. The physical dimensions and mounting patterns also differ; consult the datasheet for specific dimensions.
How do MERSEN's surge protective devices (SPDs) like the STP480D07 protect three-phase systems?
The MERSEN STP480D07 is a three-phase SPD for 480V AC Delta systems with 4 wires. It provides line-to-ground (L-G) and line-to-line (L-L) protection modes, with a voltage protection rating of 550/1100 V AC. It mounts on a DIN rail and uses metal oxide varistor (MOV) technology to clamp transient overvoltages. The enclosure is made of polyethylene terephthalate, offering durability in industrial environments. It is suitable for main service panels or subpanels in commercial and industrial facilities.
What wire sizes can MERSEN's FSPDB4A finger-safe power distribution block accommodate?
The MERSEN FSPDB4A finger-safe power distribution block accepts line-side wire sizes from 6 AWG to 400 kcmil and load-side wire sizes from 6 AWG to 400 kcmil. It is designed for aluminum or copper conductors and mounts on a DIN rail. The finger-safe design reduces the risk of accidental contact with live parts, making it suitable for use in enclosures where personnel may need access. It uses lug-type connections for secure terminations.
Are MERSEN's ATM series fuses suitable for DC applications?
Yes, the MERSEN ATM series fuses, such as the ATM4, are rated for both AC and DC voltages up to 600 V. They are fast-acting cylindrical midget fuses with dimensions of 13/32 in x 1 1/2 in. These fuses are commonly used in control circuits, instrumentation, and DC power supplies where overcurrent protection is required. The DC rating ensures reliable interruption of DC fault currents without arcing issues.
What is the interrupting rating of MERSEN's A30QS series fuses?
The MERSEN A30QS series fuses, such as the A30QS10-1, have an interrupting rating of 200,000 A RMS symmetrical at 300 V AC and 100,000 A at 300 V DC. This high interrupting capacity makes them suitable for protecting semiconductor devices in high-fault-current environments like power converters and UPS systems. They are fast-acting bolt-on fuses with a compact design for panel mounting.
Does 3G Electric supply MERSEN products?
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.
















































