Send a part number, a photo, or a whole BOM — we supply it and stand behind it. EXW Singapore — collect from our office.

3G Electric
MERSEN S3-04-125 Graphite Rupture Disc, 125 psig, 4 in Pipe Size - Rupture Discs
MERSENRupture Discs

MERSEN S3-04-125 Graphite Rupture Disc, 125 psig, 4 in Pipe Size

<p>The MERSEN S3-04-125 is a high-quality graphite rupture disc designed for overpressure protection in industrial systems. With a burst pressure of 125 psig and compatibility with 4-inch pipe sizes, this disc…

SKU 3G-OTH-440497

Also listed as: S304125 · S3 04 125

Brand
MERSEN
Item
S3-04-125 Graphite Rupture Disc, 125 psig, 4 in Pipe Size
Part Number
S3-04-125
Category
Rupture Discs
Available to Order
Also known as:S3-04-125MERSEN
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.
EXW Singapore
Collect or forward from our office
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
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.

Technical Specifications

MERSEN
Manufacturer Part Number
S3-04-125
Overall Dia
6 3/10 in
Body Material
Graphite
Compatible Pipe Size
4 in

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

<p>The MERSEN S3-04-125 is a high-quality graphite rupture disc designed for overpressure protection in industrial systems. With a burst pressure of 125 psig and compatibility with 4-inch pipe sizes, this disc ensures reliable performance in demanding applications. Its overall diameter is 6 3/10 inches, and the body is constructed from durable graphite, offering excellent corrosion resistance.</p><p>Ideal for use in chemical processing, pharmaceutical, and other industries where pressure relief is critical, this rupture disc is a trusted choice for safety systems. As a Singapore-based supplier, 3G Electric offers this product with worldwide shipping, SGD quotes on request, and GST handled for local buyers. Enjoy fast delivery across Singapore and Southeast Asia.</p>

Frequently Asked Questions

What is the burst pressure and pipe size compatibility of the MERSEN S3-04-125?

The MERSEN S3-04-125 has a burst pressure of 125 psig and is compatible with 4-inch pipe sizes.

Can I get a quote in SGD and what about GST and delivery?

Yes, we provide SGD quotes on request. For Singapore buyers, GST is handled. We offer fast delivery across Singapore and Southeast Asia.

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.
Not sure this is the right part? Photo-identify it→

MERSEN Products

3G Electric supplies MERSEN rupture discs. 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 →

More from MERSEN

View all MERSEN parts →
Graphite rupture disc with 40 psig burst pressure for 2-inch compatible pipe size. Overall diameter 3 9/10 inches. Provides overpressure protection in industrial piping systems
MERSEN
Graphite rupture disc with 40 psig burst pressure for 2-inch compatible pipe size. Overall diameter 3 9/10 inches. Provides overpressure protection in industrial piping systems
Graphite rupture disc with 100 psig burst pressure for 3-inch pipe systems. Overall diameter 5 1/10 inches. Provides overpressure protection in industrial piping applications
MERSEN
Graphite rupture disc with 100 psig burst pressure for 3-inch pipe systems. Overall diameter 5 1/10 inches. Provides overpressure protection in industrial piping applications
Graphite rupture disc with 30 psig burst pressure for 3-inch compatible pipe size. Overall diameter 5 1/10 inches. Provides overpressure protection in industrial piping systems
MERSEN
Graphite rupture disc with 30 psig burst pressure for 3-inch compatible pipe size. Overall diameter 5 1/10 inches. Provides overpressure protection in industrial piping systems
Graphite rupture disc with 30 psig burst pressure for overpressure protection in piping systems. Compatible with 6-inch pipe size, overall diameter 8 1/2 inches. Body material is graphite
MERSEN
Graphite rupture disc with 30 psig burst pressure for overpressure protection in piping systems. Compatible with 6-inch pipe size, overall diameter 8 1/2 inches. Body material is graphite
The MERSEN S3-04-20 is a graphite rupture disc with a 20 psig burst pressure, designed for a 4-inch compatible pipe size and a 6 3/10-inch overall diameter. It provides overpressure protection in piping, vessels, and process lines, bursting at a set pressure to prevent equipment damage or catastrophic failure
MERSEN
The MERSEN S3-04-20 is a graphite rupture disc with a 20 psig burst pressure, designed for a 4-inch compatible pipe size and a 6 3/10-inch overall diameter. It provides overpressure protection in piping, vessels, and process lines, bursting at a set pressure to prevent equipment damage or catastrophic failure
Graphite rupture disc with 20 psig burst pressure for 6-inch compatible pipe size. Overall diameter 8 1/2 inches. Provides overpressure protection in industrial piping systems
MERSEN
Graphite rupture disc with 20 psig burst pressure for 6-inch compatible pipe size. Overall diameter 8 1/2 inches. Provides overpressure protection in industrial piping systems

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first