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MERSEN GSF1 Time-Delay Cylindrical Fuse - Time-Delay Cylindrical Fuses
MERSENTime-Delay Cylindrical Fuses

MERSEN GSF1 Time-Delay Cylindrical Fuse

The MERSEN GSF Series is a time-delay cylindrical fuse rated at 1 A and 250 V AC, with a 5 mm x 20 mm form factor. It is non-indicating and is equivalent to the S505, 477, and GSF fuse series. This product is…

SKU 3G-OTH-27069

Also listed as: GSF 1 · GSF-1

Brand
MERSEN
Item
GSF1 Time-Delay Cylindrical Fuse
Part Number
GSF1
Category
Time-Delay Cylindrical Fuses
Available to Order
Also known as:GSF1MERSEN
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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
GSF1
Series
GSF
Type
Time-Delay, 1 A, Non-Indicating, 5 mm x 20 mm, S505, 477, & GSF
AC
250 V
Equivalent Fuse Series
S505, 477, & GSF

Technical Documents

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

Product Description

The MERSEN GSF Series is a time-delay cylindrical fuse rated at 1 A and 250 V AC, with a 5 mm x 20 mm form factor. It is non-indicating and is equivalent to the S505, 477, and GSF fuse series. This product is identified by manufacturer part number GSF1.

Frequently Asked Questions

What is the MERSEN GSF1 fuse used for?

The MERSEN GSF1 is a 1 A, 250 V AC time-delay cylindrical fuse used for overcurrent protection in industrial control panels, power supplies, and lighting circuits. Its 5 mm x 20 mm form factor fits standard fuse holders, and the time-delay characteristic handles inrush currents without nuisance tripping.

What are the specifications of the MERSEN GSF1 fuse?

The MERSEN GSF1 is rated at 1 A and 250 V AC, with a time-delay, non-indicating design. It has a 5 mm x 20 mm cylindrical body and is equivalent to the S505, 477, and GSF fuse series. The manufacturer part number is GSF1, and it belongs to the MERSEN GSF series.

Where to buy MERSEN GSF1 fuses worldwide?

You can source MERSEN GSF1 fuses 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 select the correct MERSEN GSF1 fuse for a circuit?

To select the MERSEN GSF1, verify your circuit's operating voltage does not exceed 250 V AC and the continuous current is at or below 1 A. The time-delay characteristic suits loads with high inrush, such as motors or transformers. Always confirm the 5 mm x 20 mm dimensions fit your holder. Consult a qualified engineer for coordination studies.

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 time-delay 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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