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

3G Electric
MERSEN S3-04-20 Graphite Rupture Disc - Rupture Discs
MERSENRupture Discs

MERSEN S3-04-20 Graphite Rupture Disc

<p>The MERSEN S3-04-20 is a graphite rupture disc designed for overpressure protection in industrial systems. With a burst pressure of 20 psig and compatibility with 4-inch pipe sizes, this disc offers reliable…

SKU 3G-OTH-440487

Also listed as: S30420 · S3 04 20

Brand
MERSEN
Item
S3-04-20 Graphite Rupture Disc
Part Number
S3-04-20
Category
Rupture Discs
Available to Order
Also known as:S3-04-20MERSEN
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
S3-04-20
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 S3-04-20 is a graphite rupture disc designed for overpressure protection in industrial systems. With a burst pressure of 20 psig and compatibility with 4-inch pipe sizes, this disc offers reliable performance. Its overall diameter is 6 3/10 inches, and it is constructed from high-quality graphite, ensuring corrosion resistance and durability.</p><p>Ideal for chemical, pharmaceutical, and processing industries, this rupture disc is a critical safety component. As a Singapore-based supplier, 3G Electric provides SGD quotes on request, handles GST for local buyers, and offers fast delivery across Singapore and Southeast Asia, with worldwide shipping available.</p>

Frequently Asked Questions

What is the burst pressure and pipe size compatibility of the MERSEN S3-04-20?

The MERSEN S3-04-20 has a burst pressure of 20 psig and is compatible with 4-inch pipe sizes.

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

Yes, 3G Electric provides SGD quotes on request. For Singapore buyers, GST is handled, and we offer fast delivery across Singapore and Southeast Asia.

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.
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
Graphite rupture disc with 125 psig burst pressure for 4-inch compatible pipe size. Overall diameter 6 3/10 inches. Provides overpressure protection in industrial piping systems
MERSEN
Graphite rupture disc with 125 psig burst pressure for 4-inch compatible pipe size. Overall diameter 6 3/10 inches. Provides overpressure protection in industrial piping systems
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