Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

MERSEN Fuse: GSA Series, Time-Delay, 2.5 A, 250 V AC, Non-Indicating, 1/4 in x 1 1/4 in - Time-Delay Cylindrical Fuses
MERSENTime-Delay Cylindrical Fuses

MERSEN Fuse: GSA Series, Time-Delay, 2.5 A, 250 V AC, Non-Indicating, 1/4 in x 1 1/4 in

The MERSEN GSA Series is a time-delay cylindrical fuse rated at 2.5 A and 250 V AC, with a non-indicating design and dimensions of 1/4 in x 1 1/4 in. It is equivalent to the MDA and GSA fuse series, identified by…

SKU 3G-OTH-27205

Also listed as: GSA212 · GSA2 1 2 · GSA2-1-2

Brand
MERSEN
Item
Fuse: GSA Series, Time-Delay, 2.5 A, 250 V AC, Non-Indicating, 1/4 in x 1 1/4 in
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 — 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
GSA2-1/2
Series
GSA
Type
Time-Delay, 2.5 A, Non-Indicating, 1/4 in x 1 1/4 in, MDA & GSA
AC
250 V
Equivalent Fuse Series
MDA & GSA

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 GSA Series is a time-delay cylindrical fuse rated at 2.5 A and 250 V AC, with a non-indicating design and dimensions of 1/4 in x 1 1/4 in. It is equivalent to the MDA and GSA fuse series, identified by manufacturer part number GSA2-1/2.

Frequently Asked Questions

What is the MERSEN GSA Series fuse used for?

The MERSEN GSA Series time-delay fuse protects circuits against overloads and short circuits in industrial control panels, motor starters, and lighting systems. Its 2.5 A, 250 V AC rating suits general-purpose branch circuit protection where inrush tolerance is needed.

What are the specifications of the MERSEN GSA2-1/2 fuse?

The MERSEN GSA2-1/2 is a 2.5 A, 250 V AC time-delay cylindrical fuse with a non-indicating design. It measures 1/4 in x 1 1/4 in and is equivalent to the MDA and GSA series. The manufacturer part number is GSA2-1/2.

Where to buy MERSEN GSA2-1/2 fuses worldwide?

3G Electric supplies the MERSEN GSA2-1/2 fuse worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this time-delay fuse.

How to select the right MERSEN GSA fuse for an application?

Select the MERSEN GSA fuse based on continuous current (2.5 A), voltage (250 V AC), and time-delay characteristics for motor or transformer inrush. Verify dimensions (1/4 in x 1 1/4 in) fit your holder. Consult MERSEN application notes 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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
MERSEN Fuse: GSA Series, Time-Delay, 2 A, 250 V AC, Non-Indicating, 1/4 in x 1 1/4 in, MDA & GSA (MPN GSA2)
MERSEN
MERSEN Fuse: GSA Series, Time-Delay, 2 A, 250 V AC, Non-Indicating, 1/4 in x 1 1/4 in, MDA & GSA (MPN GSA2)
MERSEN Fuse: GSA Series, Time-Delay, 15 A, 250 V AC, Non-Indicating, 1/4 in x 1 1/4 in, MDA & GSA (MPN GSA15)
MERSEN
MERSEN Fuse: GSA Series, Time-Delay, 15 A, 250 V AC, Non-Indicating, 1/4 in x 1 1/4 in, MDA & GSA (MPN GSA15)
MERSEN Fuse: GSA Series, Time-Delay, 1.25 A, 250 V AC, Non-Indicating, 1/4 in x 1 1/4 in, MDA & GSA (MPN GSA1-1/4)
MERSEN
MERSEN Fuse: GSA Series, Time-Delay, 1.25 A, 250 V AC, Non-Indicating, 1/4 in x 1 1/4 in, MDA & GSA (MPN GSA1-1/4)
MERSEN Fuse: GSA Series, Time-Delay, 5 A, 250 V AC, Non-Indicating, 1/4 in x 1 1/4 in, MDA & GSA (MPN GSA5)
MERSEN
MERSEN Fuse: GSA Series, Time-Delay, 5 A, 250 V AC, Non-Indicating, 1/4 in x 1 1/4 in, MDA & GSA (MPN GSA5)
MERSEN Fuse: GSA Series, Time-Delay, 12 A, 250 V AC, Non-Indicating, 1/4 in x 1 1/4 in, MDA & GSA (MPN GSA12)
MERSEN
MERSEN Fuse: GSA Series, Time-Delay, 12 A, 250 V AC, Non-Indicating, 1/4 in x 1 1/4 in, MDA & GSA (MPN GSA12)
MERSEN Fuse: GSA Series, Time-Delay, 3 A, 250 V AC, Non-Indicating, 1/4 in x 1 1/4 in, MDA & GSA (MPN GSA3)
MERSEN
MERSEN Fuse: GSA Series, Time-Delay, 3 A, 250 V AC, Non-Indicating, 1/4 in x 1 1/4 in, MDA & GSA (MPN GSA3)

More from MERSEN

View all MERSEN parts
Fuse: ATQR Series, Time-Delay, 125 mA, 600 V AC, Non-Indicating, 13/32 in x 1 1/2 in (MPN ATQR1/8)
MERSEN
Fuse: ATQR Series, Time-Delay, 125 mA, 600 V AC, Non-Indicating, 13/32 in x 1 1/2 in (MPN ATQR1/8)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 1.6 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR1-6/10R)
MERSEN
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 1.6 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR1-6/10R)
Fuse: ATQR Series, Time-Delay, 100 mA, 600 V AC, Non-Indicating, 13/32 in x 1 1/2 in (MPN ATQR1/10)
MERSEN
Fuse: ATQR Series, Time-Delay, 100 mA, 600 V AC, Non-Indicating, 13/32 in x 1 1/2 in (MPN ATQR1/10)
Fuse: ATQR Series, Time-Delay, 187.5 mA, 600 V AC, Non-Indicating, 13/32 in x 1 1/2 in (MPN ATQR3/16)
MERSEN
Fuse: ATQR Series, Time-Delay, 187.5 mA, 600 V AC, Non-Indicating, 13/32 in x 1 1/2 in (MPN ATQR3/16)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 1 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR1R)
MERSEN
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 1 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR1R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 2.25 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR2-1/4R)
MERSEN
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 2.25 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR2-1/4R)
MERSEN Fuse: Class RK5, TRS-R Series, Time-Delay, 1.25 A, 600 V AC, 600 V DC, Non-Indicating (MPN TRS1-1/4R)
MERSEN
MERSEN Fuse: Class RK5, TRS-R Series, Time-Delay, 1.25 A, 600 V AC, 600 V DC, Non-Indicating (MPN TRS1-1/4R)
MERSEN Fuse: TRM Series, Midget, Time-Delay, 6 A, 250 V AC, 13/32 in x 1 1/2 in, Non-Indicating (MPN TRM6)
MERSEN
MERSEN Fuse: TRM Series, Midget, Time-Delay, 6 A, 250 V AC, 13/32 in x 1 1/2 in, Non-Indicating (MPN TRM6)