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MERSEN S3-02-125 Graphite Rupture Disc, 125 psig, 2 in Pipe Size - Rupture Discs
MERSENRupture Discs

MERSEN S3-02-125 Graphite Rupture Disc, 125 psig, 2 in Pipe Size

The MERSEN S3-02-125 is a graphite rupture disc with a 125 psig burst pressure, designed for 2-inch compatible pipe size and a 3 9/10-inch overall diameter. This industrial safety device provides overpressure…

SKU 3G-OTH-440475

Also listed as: S302125 · S3 02 125

Brand
MERSEN
Item
S3-02-125 Graphite Rupture Disc, 125 psig, 2 in Pipe Size
Category
Rupture Discs
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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
S3-02-125
Overall Dia
3 9/10 in
Body Material
Graphite
Compatible Pipe Size
2 in

Technical Documents

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MERSEN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MERSEN S3-02-125 is a graphite rupture disc with a 125 psig burst pressure, designed for 2-inch compatible pipe size and a 3 9/10-inch overall diameter. This industrial safety device provides overpressure protection in piping systems.

Frequently Asked Questions

What is the MERSEN S3-02-125 rupture disc used for?

The MERSEN S3-02-125 graphite rupture disc provides overpressure protection in piping systems. It is used in industrial processes to prevent equipment damage by bursting at a set pressure of 125 psig, safely relieving excess pressure.

What are the specifications of the MERSEN S3-02-125 rupture disc?

The MERSEN S3-02-125 has a burst pressure of 125 psig, a compatible pipe size of 2 inches, and an overall diameter of 3 9/10 inches. It is made of graphite and is designed for overpressure safety in industrial piping systems.

Where to buy the MERSEN S3-02-125 rupture disc worldwide?

3G Electric supplies the MERSEN S3-02-125 rupture disc worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install a MERSEN graphite rupture disc?

Install the MERSEN S3-02-125 between flanges in the piping system, ensuring the disc is centered and gaskets are properly aligned. Tighten bolts evenly to manufacturer torque specifications. Always follow generic best practices for rupture disc installation to avoid damage.

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.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
MERSEN Rupture Disc: 125 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-125)
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MERSEN Rupture Disc: 125 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-125)
MERSEN Rupture Disc: 125 psig Burst Pressure, 6 in Compatible Pipe Size, 8 1/2 in Overall Dia (MPN S3-06-125)
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MERSEN Rupture Disc: 125 psig Burst Pressure, 6 in Compatible Pipe Size, 8 1/2 in Overall Dia (MPN S3-06-125)
Graphite rupture disc with a burst pressure of 30 psig, compatible with 2-inch pipe size. Overall diameter of 3 9/10 inches. Used for overpressure protection in industrial piping systems, such as chemical processing, oil and gas, and pharmaceutical manufacturing
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Graphite rupture disc with a burst pressure of 30 psig, compatible with 2-inch pipe size. Overall diameter of 3 9/10 inches. Used for overpressure protection in industrial piping systems, such as chemical processing, oil and gas, and pharmaceutical manufacturing
MERSEN Rupture Disc: 25 psig Burst Pressure, 6 in Compatible Pipe Size, 8 1/2 in Overall Dia (MPN S3-06-25)
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MERSEN Rupture Disc: 25 psig Burst Pressure, 6 in Compatible Pipe Size, 8 1/2 in Overall Dia (MPN S3-06-25)
MERSEN Rupture Disc: 100 psig Burst Pressure, 6 in Compatible Pipe Size, 8 1/2 in Overall Dia (MPN S3-06-100)
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MERSEN Rupture Disc: 100 psig Burst Pressure, 6 in Compatible Pipe Size, 8 1/2 in Overall Dia (MPN S3-06-100)
MERSEN Rupture Disc: 20 psig Burst Pressure, 3 in Compatible Pipe Size, 5 1/10 in Overall Dia (MPN S3-03-20)
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MERSEN Rupture Disc: 20 psig Burst Pressure, 3 in Compatible Pipe Size, 5 1/10 in Overall Dia (MPN S3-03-20)

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