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, 1 Pole, 600 V AC, Box Lug - Fuse Blocks for UL Class J Fuses
MERSENFuse Blocks for UL Class J Fuses

MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Box Lug

SKU 3G-OTH-24570

Brand
MERSEN
Item
Fuse Block: Open Block Design, 1 Pole, 600 V AC, Box Lug
Category
Fuse Blocks for UL Class J Fuses
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
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

Technical Specifications

MERSEN
Manufacturer Part Number
6631J
View Full Spec Sheet

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

Frequently Asked Questions

What is the MERSEN 6631J fuse block used for?

The MERSEN 6631J fuse block is used to safely mount and connect UL Class J fuses in industrial electrical circuits. It provides overcurrent protection in motor control centers, panelboards, and distribution equipment, ensuring reliable operation in high-voltage AC applications up to 600 V.

What are the specifications of the MERSEN 6631J fuse block?

The MERSEN 6631J is a 1-pole, open-block-design fuse block rated for 600 V AC. It accepts UL Class J fuses and features box-lug terminals for secure wire connections. The non-indicating design means no blown-fuse indicator is included. It is manufactured by MERSEN under part number 6631J.

Where to buy the MERSEN 6631J fuse block worldwide?

You can source the MERSEN 6631J 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 6631J fuse block?

To install the MERSEN 6631J fuse block, mount it on a suitable panel or DIN rail (if applicable) using the provided slots. Connect incoming and outgoing wires to the box-lug terminals, tightening to the manufacturer's recommended torque. Insert a UL Class J fuse of the correct amp rating. Always de-energize the circuit before installation.

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 j 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 →

Similar products

Matched by specification & description
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Box Lug, Non-Indicating (MPN 64001J). Key specifications — Brand: MERSEN.
MERSEN
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Box Lug, Non-Indicating (MPN 64001J). Key specifications — Brand: MERSEN.
MERSEN Fuse Block: Open Block Design, 3 Pole, 600 V AC, Box Lug, Non-Indicating (MPN 62003J). Key specifications — Brand: MERSEN.
MERSEN
MERSEN Fuse Block: Open Block Design, 3 Pole, 600 V AC, Box Lug, Non-Indicating (MPN 62003J). Key specifications — Brand: MERSEN.
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Box Lug, Non-Indicating (MPN 62031T). Key specifications — Brand: MERSEN.
MERSEN
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Box Lug, Non-Indicating (MPN 62031T). Key specifications — Brand: MERSEN.
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Box Lug, Non-Indicating (MPN 62001J). Key specifications — Brand: MERSEN.
MERSEN
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Box Lug, Non-Indicating (MPN 62001J). Key specifications — Brand: MERSEN.
MERSEN Fuse Block: Open Block Design, 3 Pole, 600 V AC, Box Lug, Non-Indicating (MPN 61038). Key specifications — attr233046: MERSEN.
MERSEN
MERSEN Fuse Block: Open Block Design, 3 Pole, 600 V AC, Box Lug, Non-Indicating (MPN 61038). Key specifications — attr233046: MERSEN.
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Box Lug, Non-Indicating (MPN 62001). Key specifications — attr233046: MERSEN.
MERSEN
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Box Lug, Non-Indicating (MPN 62001). Key specifications — attr233046: MERSEN.

More from MERSEN

View all MERSEN parts →
MERSEN Fuse Block: Open Block Design, 2 Pole, 600 V AC, Pressure Plate, Non-Indicating (MPN FB60J30P2). Key specifications — Brand: MERSEN.
MERSEN
MERSEN Fuse Block: Open Block Design, 2 Pole, 600 V AC, Pressure Plate, Non-Indicating (MPN FB60J30P2). Key specifications — Brand: MERSEN.
MERSEN Fuse Block: Open Block Design, 2 Pole, 600 V AC, Pressure Plate, Non-Indicating (MPN 60327SJ). Key specifications — Brand: MERSEN.
MERSEN
MERSEN Fuse Block: Open Block Design, 2 Pole, 600 V AC, Pressure Plate, Non-Indicating (MPN 60327SJ). Key specifications — Brand: MERSEN.
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Pressure Plate, Non-Indicating (MPN 60326SJ). Key specifications — Brand: MERSEN.
MERSEN
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Pressure Plate, Non-Indicating (MPN 60326SJ). Key specifications — Brand: MERSEN.
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Box Lug (MPN FB60J60B1). Key specifications — Brand: MERSEN.
MERSEN
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Box Lug (MPN FB60J60B1). Key specifications — Brand: MERSEN.
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Screw, Non-Indicating (MPN 60311J). Key specifications — Brand: MERSEN.
MERSEN
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Screw, Non-Indicating (MPN 60311J). Key specifications — Brand: MERSEN.
MERSEN Fuse Block: Open Block Design, 3 Pole, 600 V AC, Box Lug (MPN FB60J100B3). Key specifications — Brand: MERSEN.
MERSEN
MERSEN Fuse Block: Open Block Design, 3 Pole, 600 V AC, Box Lug (MPN FB60J100B3). Key specifications — Brand: MERSEN.
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Box Lug (MPN FB60J30B1). Key specifications — Brand: MERSEN.
MERSEN
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Box Lug (MPN FB60J30B1). Key specifications — Brand: MERSEN.
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Screw, Non-Indicating (MPN 60316SJ). Key specifications — Brand: MERSEN.
MERSEN
MERSEN Fuse Block: Open Block Design, 1 Pole, 600 V AC, Screw, Non-Indicating (MPN 60316SJ). Key specifications — Brand: MERSEN.