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MERSEN HSJ40 Very-Fast-Acting Cylindrical Fuse - Very-Fast-Acting Cylindrical Fuses
MERSENVery-Fast-Acting Cylindrical Fuses

MERSEN HSJ40 Very-Fast-Acting Cylindrical Fuse

The MERSEN HSJ Series is a very-fast-acting cylindrical fuse, Class J, with a 40 A rating at 600 V AC and 500 V DC (MPN HSJ40). This MERSEN fuse provides overcurrent protection for industrial equipment.

SKU 3G-OTH-24830

Also listed as: HSJ 40 · HSJ-40

Brand
MERSEN
Item
HSJ40 Very-Fast-Acting Cylindrical Fuse
Part Number
HSJ40
Category
Very-Fast-Acting Cylindrical Fuses
Available to Order
Also known as:HSJ40MERSEN
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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
HSJ40
Series
HSJ
Type
Class J, Cylindrical Body, Very-Fast-Acting, 40 A
AC
600 V
DC
500 V

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

Product Description

The MERSEN HSJ Series is a very-fast-acting cylindrical fuse, Class J, with a 40 A rating at 600 V AC and 500 V DC (MPN HSJ40). This MERSEN fuse provides overcurrent protection for industrial equipment.

Frequently Asked Questions

What is the MERSEN HSJ40 fuse used for?

The MERSEN HSJ40 is a very-fast-acting Class J cylindrical fuse rated 40 A at 600 V AC and 500 V DC. It provides overcurrent protection for industrial equipment such as motor control centers, panelboards, and power supplies where rapid clearing of short circuits is required.

What are the specifications of the MERSEN HSJ40 fuse?

The MERSEN HSJ40 is a Class J, cylindrical-body, very-fast-acting fuse rated 40 A, 600 V AC, and 500 V DC. It is part of the HSJ series and carries the manufacturer part number HSJ40. These ratings ensure reliable overcurrent protection in demanding industrial circuits.

Where to buy MERSEN HSJ40 fuses worldwide?

3G Electric supplies the MERSEN HSJ40 fuse to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this Class J, 40 A, 600 V AC / 500 V DC fuse.

How to select the right MERSEN HSJ series fuse for an application?

To select the correct MERSEN HSJ series fuse, match the voltage rating (600 V AC or 500 V DC) and current rating (e.g., 40 A for HSJ40) to your circuit requirements. Ensure the Class J rejection-style holder is used. Consult the manufacturer's time-current curve for coordination with upstream devices.

Used in

Common applications for MERSEN
Industrial control panels — Mersen USCC1 and USCC2 UL Class CC fuse blocks for DIN rail mounting and finger-safe branch circuit protection.
Motor starters — Mersen ATQ time-delay fuses and DAR0 R-rated fuses for motor overload and short-circuit protection.
Power supplies and instrumentation — Mersen GGM and GSB fast-acting cylindrical fuses for overcurrent protection in compact electronic circuits.
DC systems — Mersen A30QS very-fast-acting square fuses rated 300 V DC for semiconductor and DC equipment protection.
Medium-voltage distribution — Mersen DAR0 R-rated fuses rated 5.08 kV AC for general-purpose overcurrent protection with visual indication.
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MERSEN Products

3G Electric supplies MERSEN very-fast-acting cylindrical fuses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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