We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

MERSEN Fuse: GDG Series, Time-Delay, 125 mA, 250 V AC - Time-Delay Cylindrical Fuses
MERSENTime-Delay Cylindrical Fuses

MERSEN Fuse: GDG Series, Time-Delay, 125 mA, 250 V AC

The MERSEN GDG Series is a time-delay cylindrical fuse rated at 125 mA and 250 V AC, with dimensions of 5.1 mm x 20.1 mm. This MERSEN fuse, model GDG1/8, provides overcurrent protection in a compact glass tube design.

SKU 3G-OTH-27764

Also listed as: GDG18 · GDG1 8 · GDG1-8

Brand
MERSEN
Item
Fuse: GDG Series, Time-Delay, 125 mA, 250 V AC
Category
Time-Delay Cylindrical 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

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

MERSEN
Manufacturer Part Number
GDG1/8
Series
GDG

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

The MERSEN GDG Series is a time-delay cylindrical fuse rated at 125 mA and 250 V AC, with dimensions of 5.1 mm x 20.1 mm. This MERSEN fuse, model GDG1/8, provides overcurrent protection in a compact glass tube design.

Frequently Asked Questions

What is the MERSEN GDG Series fuse used for?

The MERSEN GDG Series time-delay fuse (125 mA, 250 V AC) protects sensitive equipment from overcurrent in industrial control panels, instrumentation, and power supplies. Its compact 5.1 mm x 20.1 mm glass tube design fits standard fuse holders, and the time-delay characteristic handles inrush currents without nuisance tripping.

What are the specifications of the MERSEN GDG1/8 fuse?

The MERSEN GDG1/8 is a time-delay cylindrical fuse rated at 125 mA and 250 V AC. It measures 5.1 mm x 20.1 mm and belongs to the GDG Series. The glass tube construction provides reliable overcurrent protection in a compact form factor suitable for industrial and commercial applications.

Where to buy MERSEN GDG Series fuses worldwide?

3G Electric supplies MERSEN GDG Series fuses (including GDG1/8) to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this time-delay fuse.

How to select the correct MERSEN GDG fuse for my application?

To select the right MERSEN GDG fuse, match the voltage rating (250 V AC) and current rating (125 mA for GDG1/8) to your circuit requirements. The time-delay characteristic is ideal for loads with startup surges. Always verify the physical dimensions (5.1 mm x 20.1 mm) fit your fuse holder.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
MERSEN Fuse: GDG Series, Time-Delay, 250 mA, 250 V AC, 5.1 mm x 20.1 mm (MPN GDG1/4)
MERSEN
MERSEN Fuse: GDG Series, Time-Delay, 250 mA, 250 V AC, 5.1 mm x 20.1 mm (MPN GDG1/4)
MERSEN Fuse: GDG Series, Time-Delay, 1.25 A, 250 V AC, 5.1 mm x 20.1 mm (MPN GDG1-1/4)
MERSEN
MERSEN Fuse: GDG Series, Time-Delay, 1.25 A, 250 V AC, 5.1 mm x 20.1 mm (MPN GDG1-1/4)
MERSEN Fuse: GDG Series, Time-Delay, 10 A, 250 V AC, 5.1 mm x 20.1 mm (MPN GDG10)
MERSEN
MERSEN Fuse: GDG Series, Time-Delay, 10 A, 250 V AC, 5.1 mm x 20.1 mm (MPN GDG10)
MERSEN Fuse: GDG Series, Time-Delay, 0.5 A, 250 V AC, 5.1 mm x 20.1 mm (MPN GDG1/2)
MERSEN
MERSEN Fuse: GDG Series, Time-Delay, 0.5 A, 250 V AC, 5.1 mm x 20.1 mm (MPN GDG1/2)
MERSEN Fuse: GDG Series, Time-Delay, 1 A, 250 V AC, 5.1 mm x 20.1 mm (MPN GDG1)
MERSEN
MERSEN Fuse: GDG Series, Time-Delay, 1 A, 250 V AC, 5.1 mm x 20.1 mm (MPN GDG1)
MERSEN Fuse: GDG Series, Time-Delay, 80 mA, 250 V AC, 5.1 mm x 20.1 mm (MPN GDG8/100)
MERSEN
MERSEN Fuse: GDG Series, Time-Delay, 80 mA, 250 V AC, 5.1 mm x 20.1 mm (MPN GDG8/100)

More from MERSEN

View all MERSEN parts
Midget time-delay fuse rated 100 mA at 250 V AC. Measures 13/32 in x 1 1/2 in with indicating feature for visual blown-fuse identification. Provides overcurrent protection in circuits such as control transformers, solenoids, and instrumentation where temporary inrush currents occur
MERSEN
Midget time-delay fuse rated 100 mA at 250 V AC. Measures 13/32 in x 1 1/2 in with indicating feature for visual blown-fuse identification. Provides overcurrent protection in circuits such as control transformers, solenoids, and instrumentation where temporary inrush currents occur
Class RK5, TRS-RID Series time-delay fuse rated 9 A, 600 V AC and 600 V DC. Features an indicating function that visually signals when the fuse has opened. Used for overcurrent protection in industrial electrical systems, including motor and transformer circuits
MERSEN
Class RK5, TRS-RID Series time-delay fuse rated 9 A, 600 V AC and 600 V DC. Features an indicating function that visually signals when the fuse has opened. Used for overcurrent protection in industrial electrical systems, including motor and transformer circuits
Class RK5, TRS-RID Series time-delay fuse rated 12 A at 600 V AC and 600 V DC. Features visual blown-fuse indication for rapid identification in industrial circuits. Cylindrical body fits standard fuse holders and disconnect switches
MERSEN
Class RK5, TRS-RID Series time-delay fuse rated 12 A at 600 V AC and 600 V DC. Features visual blown-fuse indication for rapid identification in industrial circuits. Cylindrical body fits standard fuse holders and disconnect switches
Midget time-delay cylindrical fuse rated 150 mA at 250 V AC. Non-indicating design with dimensions 13/32 in x 1 1/2 in. Used in industrial control panels, motor starters, and lighting systems to protect against overcurrents while allowing temporary surges
MERSEN
Midget time-delay cylindrical fuse rated 150 mA at 250 V AC. Non-indicating design with dimensions 13/32 in x 1 1/2 in. Used in industrial control panels, motor starters, and lighting systems to protect against overcurrents while allowing temporary surges
Time-delay midget fuse rated 3.2 A and 500 V AC, with a 13/32 in x 1 1/2 in cylindrical body. Non-indicating design. Used for overcurrent protection in circuits with temporary inrush currents, such as control transformers and solenoid loads
MERSEN
Time-delay midget fuse rated 3.2 A and 500 V AC, with a 13/32 in x 1 1/2 in cylindrical body. Non-indicating design. Used for overcurrent protection in circuits with temporary inrush currents, such as control transformers and solenoid loads
Midget time-delay cylindrical fuse rated 25 A at 250 V AC. Non-indicating, with dimensions 13/32 in x 1 1/2 in. Suitable for protecting industrial control circuits, motor starters, and solenoid valves from overloads and short circuits
MERSEN
Midget time-delay cylindrical fuse rated 25 A at 250 V AC. Non-indicating, with dimensions 13/32 in x 1 1/2 in. Suitable for protecting industrial control circuits, motor starters, and solenoid valves from overloads and short circuits
Class RK5 time-delay cylindrical fuse rated 2.5 A, 600 V AC and 600 V DC. Non-indicating type from the TRS-R series. Provides overcurrent protection for motor circuits, transformers, and inductive loads, tolerating inrush surges. Suitable for branch-circuit protection in industrial control panels and power distribution systems
MERSEN
Class RK5 time-delay cylindrical fuse rated 2.5 A, 600 V AC and 600 V DC. Non-indicating type from the TRS-R series. Provides overcurrent protection for motor circuits, transformers, and inductive loads, tolerating inrush surges. Suitable for branch-circuit protection in industrial control panels and power distribution systems
Midget time-delay fuse rated 250 mA at 250 V AC, with 13/32 in x 1 1/2 in cylindrical body. Indicating feature allows visual identification of blown fuse. Used for overcurrent protection in control panels, transformers, and motor circuits
MERSEN
Midget time-delay fuse rated 250 mA at 250 V AC, with 13/32 in x 1 1/2 in cylindrical body. Indicating feature allows visual identification of blown fuse. Used for overcurrent protection in control panels, transformers, and motor circuits