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MERSEN 20303 Fuse Block: 3 Pole, 250 V AC, Open Block, Box Lug, Non-Indicating - Fuse Blocks for UL Class H & K Fuses
MERSENFuse Blocks for UL Class H & K Fuses

MERSEN 20303 Fuse Block: 3 Pole, 250 V AC, Open Block, Box Lug, Non-Indicating

MERSEN Fuse Blocks for UL Class H & K Fuses.

SKU 3G-OTH-129368

Brand
MERSEN
Item
20303 Fuse Block: 3 Pole, 250 V AC, Open Block, Box Lug, Non-Indicating
Category
Fuse Blocks for UL Class H & K Fuses
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

MERSEN
Manufacturer Part Number
20303

Technical Documents

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MERSEN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

MERSEN Fuse Blocks for UL Class H & K Fuses.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
This MERSEN fuse block is a 1-pole, open block design rated for 250 V AC. It accepts UL Class H and K fuses and features box-lug terminals. The non-indicating block is used in panel boards, motor control centers, and distribution equipment for overcurrent protection
MERSEN
This MERSEN fuse block is a 1-pole, open block design rated for 250 V AC. It accepts UL Class H and K fuses and features box-lug terminals. The non-indicating block is used in panel boards, motor control centers, and distribution equipment for overcurrent protection
This 3-pole fuse block is designed for mounting UL Class H and K fuses in industrial electrical circuits. Rated for 250 V AC, it features an open block design with box lug terminals for secure connections. Suitable for use in motor control centers, panel boards, and distribution equipment requiring overcurrent protection
MERSEN
This 3-pole fuse block is designed for mounting UL Class H and K fuses in industrial electrical circuits. Rated for 250 V AC, it features an open block design with box lug terminals for secure connections. Suitable for use in motor control centers, panel boards, and distribution equipment requiring overcurrent protection
MERSEN Fuse Block: Open Block Design, 3 Pole, 250 V AC, Box Lug, Non-Indicating (MPN 20358)
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MERSEN Fuse Block: Open Block Design, 3 Pole, 250 V AC, Box Lug, Non-Indicating (MPN 20358)
This 3-pole fuse block is designed for UL Class H and K fuses, rated at 250 V AC. It features an open block design with screw-type terminals for secure connections. Suitable for use in panel boards, motor control centers, and distribution equipment requiring overcurrent protection
MERSEN
This 3-pole fuse block is designed for UL Class H and K fuses, rated at 250 V AC. It features an open block design with screw-type terminals for secure connections. Suitable for use in panel boards, motor control centers, and distribution equipment requiring overcurrent protection
The MERSEN 20318 is a 3-pole open block fuse block rated for 250 V AC. It features screw-type terminals and a non-indicating design. This block accepts UL Class H and K fuses. Typical applications include panel boards, motor control centers, and distribution equipment
MERSEN
The MERSEN 20318 is a 3-pole open block fuse block rated for 250 V AC. It features screw-type terminals and a non-indicating design. This block accepts UL Class H and K fuses. Typical applications include panel boards, motor control centers, and distribution equipment
Single-pole open block fuse holder for UL Class H and K fuses. Rated 250 V AC with box lug terminals for secure wiring. Non-indicating design. Used in panel boards, motor control centers, and distribution equipment for overcurrent protection
MERSEN
Single-pole open block fuse holder for UL Class H and K fuses. Rated 250 V AC with box lug terminals for secure wiring. Non-indicating design. Used in panel boards, motor control centers, and distribution equipment for overcurrent protection

More from MERSEN

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This 3-pole fuse block is rated for 250 V AC and accepts UL Class H and K fuses. It features pressure-plate terminals for secure wire connections and a non-indicating design. The open-block construction facilitates wiring in control panels, motor circuits, and branch-circuit protection applications
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This 3-pole fuse block is rated for 250 V AC and accepts UL Class H and K fuses. It features pressure-plate terminals for secure wire connections and a non-indicating design. The open-block construction facilitates wiring in control panels, motor circuits, and branch-circuit protection applications
This MERSEN fuse block is an open-block design with 2 poles, rated for 250 V AC. It features box lug terminals for secure wire connections and is non-indicating. Designed to accept UL Class H and K fuses, it is used for overcurrent protection in industrial control panels, motor circuits, and distribution equipment
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This MERSEN fuse block is an open-block design with 2 poles, rated for 250 V AC. It features box lug terminals for secure wire connections and is non-indicating. Designed to accept UL Class H and K fuses, it is used for overcurrent protection in industrial control panels, motor circuits, and distribution equipment
Single-pole open-block fuse holder rated 250 V AC. Accepts UL Class H and K fuses. Features pressure-plate terminals and non-indicating design. Used in panel boards, motor control centers, and distribution equipment for overcurrent protection
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Single-pole open-block fuse holder rated 250 V AC. Accepts UL Class H and K fuses. Features pressure-plate terminals and non-indicating design. Used in panel boards, motor control centers, and distribution equipment for overcurrent protection
Open-style fuse block for UL Class H and K fuses. Single-pole design rated 250 V AC with box lug terminals. Non-indicating type suitable for overcurrent protection in industrial control panels and distribution equipment
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Open-style fuse block for UL Class H and K fuses. Single-pole design rated 250 V AC with box lug terminals. Non-indicating type suitable for overcurrent protection in industrial control panels and distribution equipment
This MERSEN fuse block is a 2-pole, open-block design rated for 600 V AC. It features box lug terminals and is non-indicating. Designed to accept UL Class H and K fuses, it is used for overcurrent protection in industrial control panels, motor circuits, and distribution boards
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This MERSEN fuse block is a 2-pole, open-block design rated for 600 V AC. It features box lug terminals and is non-indicating. Designed to accept UL Class H and K fuses, it is used for overcurrent protection in industrial control panels, motor circuits, and distribution boards
Three-pole open-block fuse block for UL Class H and K fuses. Rated 600 V AC with box lug terminals. Non-indicating design. Used in industrial electrical panels for overcurrent protection in motor control centers and distribution boards
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Three-pole open-block fuse block for UL Class H and K fuses. Rated 600 V AC with box lug terminals. Non-indicating design. Used in industrial electrical panels for overcurrent protection in motor control centers and distribution boards
The MERSEN 20302 is a 2-pole, open block design fuse block rated for 250 V AC. It features box lug terminals and is non-indicating. Designed to accept UL Class H and K fuses, it is used for safely holding and connecting fuses in industrial control panels, motor circuits, and branch-circuit protection in electrical distribution systems
MERSEN
The MERSEN 20302 is a 2-pole, open block design fuse block rated for 250 V AC. It features box lug terminals and is non-indicating. Designed to accept UL Class H and K fuses, it is used for safely holding and connecting fuses in industrial control panels, motor circuits, and branch-circuit protection in electrical distribution systems
Open block design fuse block for mounting and connecting UL Class H and K fuses. Features 2 poles, 600 V AC rating, and box lug terminals. Non-indicating type suitable for overcurrent protection in industrial power distribution equipment
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Open block design fuse block for mounting and connecting UL Class H and K fuses. Features 2 poles, 600 V AC rating, and box lug terminals. Non-indicating type suitable for overcurrent protection in industrial power distribution equipment