Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
MERSEN Fuse Block: Open Block Design, 2 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, 2 Pole, 250 V AC, Box Lug

MERSEN Fuse Blocks for UL Class H & K Fuses.

SKU 3G-OTH-129370

Brand
MERSEN
Item
Fuse Block: Open Block Design, 2 Pole, 250 V AC, Box Lug
Category
Fuse Blocks for UL Class H & K Fuses
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
20357

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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 20357 fuse block used for?

The MERSEN 20357 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 20357 fuse block?

The MERSEN 20357 is a 2-pole, open block design fuse block rated for 250 V AC. It features box lug terminals and is non-indicating. This block accepts UL Class H and K fuses. The manufacturer part number is 20357, and it is supplied by MERSEN.

Where to buy the MERSEN 20357 fuse block worldwide?

You can source the MERSEN 20357 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 source and deliver this MERSEN fuse block to your location.

How to install a MERSEN fuse block?

To install a MERSEN fuse block, first disconnect all power. Mount the block securely on a panel using the provided slots. Connect line and load wires to the box lug terminals, tightening to the manufacturer's torque spec. Insert the correct UL Class H or K fuse. Always follow local electrical codes and MERSEN guidelines.

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Compatible alternatives & equivalents

Cross-referenced by specification & description
MERSEN Fuse Block: Open Block Design, 2 Pole, 250 V AC, Box Lug, Non-Indicating (MPN 20307)
MERSEN
MERSEN Fuse Block: Open Block Design, 2 Pole, 250 V AC, Box Lug, Non-Indicating (MPN 20307)
MERSEN Fuse Block: Open Block Design, 2 Pole, 250 V AC, Box Lug, Non-Indicating (MPN 20302)
MERSEN
MERSEN Fuse Block: Open Block Design, 2 Pole, 250 V AC, Box Lug, Non-Indicating (MPN 20302)
MERSEN Fuse Block: Open Block Design, 3 Pole, 250 V AC, Box Lug, Non-Indicating (MPN 20358)
MERSEN
MERSEN Fuse Block: Open Block Design, 3 Pole, 250 V AC, Box Lug, Non-Indicating (MPN 20358)
MERSEN Fuse Block: Open Block Design, 1 Pole, 250 V AC, Box Lug, Non-Indicating (MPN 20356)
MERSEN
MERSEN Fuse Block: Open Block Design, 1 Pole, 250 V AC, Box Lug, Non-Indicating (MPN 20356)
MERSEN Fuse Block: Open Block Design, 3 Pole, 250 V AC, Screw, Non-Indicating (MPN 20318)
MERSEN
MERSEN Fuse Block: Open Block Design, 3 Pole, 250 V AC, Screw, Non-Indicating (MPN 20318)
MERSEN Fuse Block: Open Block Design, 2 Pole, 250 V AC, Box Lug, Non-Indicating (MPN 20607)
MERSEN
MERSEN Fuse Block: Open Block Design, 2 Pole, 250 V AC, Box Lug, Non-Indicating (MPN 20607)

More from MERSEN

View all MERSEN parts →
Open block design for UL Class H and K fuses. Rated 600 V AC, 1 pole. Features pressure plate terminals for secure wire connections. Non-indicating type. Suitable for use in panel boards, motor control centers, and distribution equipment
MERSEN
Open block design for UL Class H and K fuses. Rated 600 V AC, 1 pole. Features pressure plate terminals for secure wire connections. Non-indicating type. Suitable for use in panel boards, motor control centers, and distribution equipment
This MERSEN fuse block is designed for UL Class H and K fuses, providing a 2-pole, open block configuration rated for 250 V AC. It features screw-type terminals and a non-indicating design. Commonly used in panel boards, motor control centers, and distribution equipment for overcurrent protection
MERSEN
This MERSEN fuse block is designed for UL Class H and K fuses, providing a 2-pole, open block configuration rated for 250 V AC. It features screw-type terminals and a non-indicating design. Commonly used in panel boards, motor control centers, and distribution equipment for overcurrent protection
This MERSEN fuse block is a 1-pole, open block design rated for 600 V AC. It accepts UL Class H and K fuses and uses screw-type terminals. The non-indicating block is suited for mounting and connecting fuses in industrial electrical circuits such as panel boards and motor control centers
MERSEN
This MERSEN fuse block is a 1-pole, open block design rated for 600 V AC. It accepts UL Class H and K fuses and uses screw-type terminals. The non-indicating block is suited for mounting and connecting fuses in industrial electrical circuits such as panel boards and motor control centers
This MERSEN fuse block is a 3-pole, open block design 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 in panel boards, motor control centers, and distribution equipment for overcurrent protection
MERSEN
This MERSEN fuse block is a 3-pole, open block design 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 in panel boards, motor control centers, and distribution equipment for overcurrent protection
This MERSEN fuse block is a 1-pole, open-block design rated for 600 V AC. It features box lug terminals and a non-indicating design. Suitable for mounting and connecting UL Class H and K fuses in industrial electrical circuits such as panel boards and motor control centers
MERSEN
This MERSEN fuse block is a 1-pole, open-block design rated for 600 V AC. It features box lug terminals and a non-indicating design. Suitable for mounting and connecting UL Class H and K fuses in industrial electrical circuits such as panel boards and motor control centers
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 61038 is a 3-pole, open-block design fuse block rated for 600 V AC. It features box lug terminals and is non-indicating. Designed for UL Class H and K fuses, it is used in industrial electrical panels, motor control centers, and distribution boards for overcurrent protection
MERSEN
The MERSEN 61038 is a 3-pole, open-block design fuse block rated for 600 V AC. It features box lug terminals and is non-indicating. Designed for UL Class H and K fuses, it is used in industrial electrical panels, motor control centers, and distribution boards for overcurrent protection
Open block design fuse block for UL Class H and K fuses. Rated 600 V AC, 2 poles, with pressure plate terminals for secure wire connections. Non-indicating type. Suitable for use in motor control centers, panelboards, and distribution equipment requiring overcurrent protection
MERSEN
Open block design fuse block for UL Class H and K fuses. Rated 600 V AC, 2 poles, with pressure plate terminals for secure wire connections. Non-indicating type. Suitable for use in motor control centers, panelboards, and distribution equipment requiring overcurrent protection