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

3G Electric
RFQ CartGet a QuoteSign inSign up
MERSEN Rupture Disc: 125 psig Burst Pressure, 4 in Compatible Pipe Size - Rupture Discs
MERSENRupture Discs

MERSEN Rupture Disc: 125 psig Burst Pressure, 4 in Compatible Pipe Size

The MERSEN S3-04-125 is a graphite rupture disc with a 125 psig burst pressure, designed for 4-inch compatible pipe size and featuring a 6 3/10-inch overall diameter. This MERSEN product provides overpressure…

SKU 3G-OTH-440497

Brand
MERSEN
Item
Rupture Disc: 125 psig Burst Pressure, 4 in Compatible Pipe Size
Category
Rupture Discs
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
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

Technical Specifications

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

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 S3-04-125 is a graphite rupture disc with a 125 psig burst pressure, designed for 4-inch compatible pipe size and featuring a 6 3/10-inch overall diameter. This MERSEN product provides overpressure protection in industrial systems.

Frequently Asked Questions

What is a MERSEN S3-04-125 rupture disc used for?

The MERSEN S3-04-125 graphite rupture disc provides overpressure protection in industrial piping systems. It bursts at a precise 125 psig to prevent equipment damage in applications such as chemical processing, oil and gas, and power generation.

What are the specifications of the MERSEN S3-04-125 rupture disc?

The MERSEN S3-04-125 has a 125 psig burst pressure, fits 4-inch compatible pipe size, and has a 6 3/10-inch overall diameter. Its body is made of graphite, offering corrosion resistance for demanding process environments.

Where to buy a MERSEN S3-04-125 rupture disc worldwide?

3G Electric supplies the MERSEN S3-04-125 rupture disc worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this overpressure safety device.

How to select the correct MERSEN rupture disc for my system?

Select a MERSEN rupture disc by matching the burst pressure (125 psig for the S3-04-125) to your system's relief requirements, and ensure the compatible pipe size (4 inches) aligns with your piping. Verify the overall diameter fits your holder assembly.

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 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 →

Similar products

Matched by specification & description
MERSEN Rupture Disc: 75 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-75). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 75 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-75). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc: 100 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-100). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 100 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-100). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc: 50 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-50). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 50 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-50). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc: 75 psig Burst Pressure, 6 in Compatible Pipe Size, 8 1/2 in Overall Dia (MPN S3-06-75). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 75 psig Burst Pressure, 6 in Compatible Pipe Size, 8 1/2 in Overall Dia (MPN S3-06-75). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc: 40 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-40). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 40 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-40). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc: 100 psig Burst Pressure, 6 in Compatible Pipe Size, 8 1/2 in Overall Dia (MPN S3-06-100). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 100 psig Burst Pressure, 6 in Compatible Pipe Size, 8 1/2 in Overall Dia (MPN S3-06-100). Key specifications — Brand: MERSEN; Body Material: Graphite.

More from MERSEN

View all MERSEN parts →
MERSEN Rupture Disc: 50 psig Burst Pressure, 3 in Compatible Pipe Size, 5 1/10 in Overall Dia (MPN S3-03-50). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 50 psig Burst Pressure, 3 in Compatible Pipe Size, 5 1/10 in Overall Dia (MPN S3-03-50). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc: 150 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-150). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 150 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-150). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc: 25 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-25). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 25 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-25). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc: 20 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-20). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 20 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-20). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc with Bar Support: 20 psig Burst Pressure, 4 in Compatible Pipe Size, Graphite (MPN S3-04-20B). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc with Bar Support: 20 psig Burst Pressure, 4 in Compatible Pipe Size, Graphite (MPN S3-04-20B). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc: 125 psig Burst Pressure, 6 in Compatible Pipe Size, 8 1/2 in Overall Dia (MPN S3-06-125). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 125 psig Burst Pressure, 6 in Compatible Pipe Size, 8 1/2 in Overall Dia (MPN S3-06-125). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc: 75 psig Burst Pressure, 2 in Compatible Pipe Size, 3 9/10 in Overall Dia (MPN S3-02-75). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 75 psig Burst Pressure, 2 in Compatible Pipe Size, 3 9/10 in Overall Dia (MPN S3-02-75). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc: 25 psig Burst Pressure, 6 in Compatible Pipe Size, 8 1/2 in Overall Dia (MPN S3-06-25). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 25 psig Burst Pressure, 6 in Compatible Pipe Size, 8 1/2 in Overall Dia (MPN S3-06-25). Key specifications — Brand: MERSEN; Body Material: Graphite.