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MERSEN Fuse: GSF Series, Time-Delay, 1 A, 250 V AC, Non-Indicating, 5 mm x 20 mm - Time-Delay Cylindrical Fuses
MERSENTime-Delay Cylindrical Fuses

MERSEN Fuse: GSF Series, Time-Delay, 1 A, 250 V AC, Non-Indicating, 5 mm x 20 mm

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
Fuse: GSF Series, Time-Delay, 1 A, 250 V AC, Non-Indicating, 5 mm x 20 mm
Category
Time-Delay Cylindrical Fuses
Available to Order
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

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.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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
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 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
MERSEN Fuse: GSF Series, Time-Delay, 2 A, 250 V AC, Non-Indicating, 5 mm x 20 mm, S505, 477, & GSF (MPN GSF2)
MERSEN
MERSEN Fuse: GSF Series, Time-Delay, 2 A, 250 V AC, Non-Indicating, 5 mm x 20 mm, S505, 477, & GSF (MPN GSF2)
MERSEN Fuse: GSF Series, Time-Delay, 5 A, 250 V AC, Non-Indicating, 5 mm x 20 mm, S505, 477, & GSF (MPN GSF5)
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MERSEN Fuse: GSF Series, Time-Delay, 5 A, 250 V AC, Non-Indicating, 5 mm x 20 mm, S505, 477, & GSF (MPN GSF5)
MERSEN Fuse: GSF Series, Time-Delay, 4 A, 250 V AC, Non-Indicating, 5 mm x 20 mm, S505, 477, & GSF (MPN GSF4)
MERSEN
MERSEN Fuse: GSF Series, Time-Delay, 4 A, 250 V AC, Non-Indicating, 5 mm x 20 mm, S505, 477, & GSF (MPN GSF4)
MERSEN Fuse: GSF Series, Time-Delay, 6.3 A, 250 V AC, Non-Indicating, 5 mm x 20 mm, S505, 477, & GSF (MPN GSF6-3/10)
MERSEN
MERSEN Fuse: GSF Series, Time-Delay, 6.3 A, 250 V AC, Non-Indicating, 5 mm x 20 mm, S505, 477, & GSF (MPN GSF6-3/10)
MERSEN Fuse: GSF Series, Time-Delay, 500 mA, 250 V AC, Non-Indicating, 5 mm x 20 mm (MPN GSF1/2)
MERSEN
MERSEN Fuse: GSF Series, Time-Delay, 500 mA, 250 V AC, Non-Indicating, 5 mm x 20 mm (MPN GSF1/2)
MERSEN Fuse: GSF Series, Time-Delay, 8 A, 250 V AC, Non-Indicating, 5 mm x 20 mm, S505, 477, & GSF (MPN GSF8)
MERSEN
MERSEN Fuse: GSF Series, Time-Delay, 8 A, 250 V AC, Non-Indicating, 5 mm x 20 mm, S505, 477, & GSF (MPN GSF8)

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