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MERSEN Fuse Block: Open Block Design, 3 Pole, 250 V AC, Box Lug - Fuse Blocks for UL Class H & K Fuses
MERSENFuse Blocks for UL Class H & K Fuses

MERSEN Fuse Block: Open Block Design, 3 Pole, 250 V AC, Box Lug

SKU 3G-OTH-129368

Brand
MERSEN
Item
Fuse Block: Open Block Design, 3 Pole, 250 V AC, Box Lug
Category
Fuse Blocks for UL Class H & K Fuses
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Technical Specifications

MERSEN
Manufacturer Part Number
20303
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MERSEN Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the MERSEN 20303 fuse block used for?

The MERSEN 20303 fuse block is used to safely hold and connect UL Class H and K fuses in industrial electrical circuits. It is commonly applied in panel boards, motor control centers, and distribution equipment requiring 250 V AC protection. Its open block design allows easy fuse access and replacement.

What are the specifications of the MERSEN 20303 fuse block?

The MERSEN 20303 is a 3-pole, open block design fuse block rated for 250 V AC. It features box lug terminals and is non-indicating. It accepts UL Class H and K fuses. The manufacturer part number is 20303. This block is designed for reliable fuse mounting in industrial power distribution.

Where to buy the MERSEN 20303 fuse block worldwide?

You can source the MERSEN 20303 fuse block through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time. We supply genuine MERSEN components for industrial applications.

How to install the MERSEN 20303 fuse block?

Mount the MERSEN 20303 fuse block on a flat surface using the provided slots. Connect incoming and outgoing conductors to the box lug terminals, tightening to the manufacturer's recommended torque. Insert UL Class H or K fuses into each pole. Ensure the circuit is de-energized before installation. Follow local electrical codes.

Used in

Common applications for MERSEN
Power electronics protection — MERSEN A70Q series semiconductor fuses in variable frequency drives for motor control.
Surge protection for industrial panels — MERSEN STP480D07 SPDs in three-phase 480V AC distribution boards.
Control circuit overcurrent protection — MERSEN ATM series midget fuses in PLC and instrumentation cabinets.
Power distribution in manufacturing — MERSEN FSPDB4A finger-safe blocks in motor control centers for wire management.
DC bus protection in renewable energy — MERSEN A30QS series fuses in solar inverter DC inputs.
High-voltage semiconductor protection — MERSEN A70Q series fuses in welding equipment power supplies.

MERSEN Products

3G Electric supplies MERSEN fuse blocks for ul class h & k fuses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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