We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
⌕
RFQ CartGet a QuoteSign inSign up
MERSEN Rupture Disc with Bar Support: 20 psig Burst Pressure, 4 in Compatible Pipe Size - Rupture Discs
MERSENRupture Discs

MERSEN Rupture Disc with Bar Support: 20 psig Burst Pressure, 4 in Compatible Pipe Size

The MERSEN Rupture Disc with Bar Support (MPN S3-04-20B) is a graphite-bodied overpressure safety device designed for 4-inch pipe systems. It is factory-set to burst at 20 psig, providing a precise pressure-relief…

SKU 3G-OTH-440489

Brand
MERSEN
Item
Rupture Disc with Bar Support: 20 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
S3-04-20B
Type
Graphite
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 Rupture Disc with Bar Support (MPN S3-04-20B) is a graphite-bodied overpressure safety device designed for 4-inch pipe systems. It is factory-set to burst at 20 psig, providing a precise pressure-relief threshold. This disc is constructed with a graphite body and includes a bar support for structural integrity.

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 with Bar Support: 20 psig Burst Pressure, 2 in Compatible Pipe Size, Graphite (MPN S3-02-20B). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc with Bar Support: 20 psig Burst Pressure, 2 in Compatible Pipe Size, Graphite (MPN S3-02-20B). 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: 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: 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: 30 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-30). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 30 psig Burst Pressure, 4 in Compatible Pipe Size, 6 3/10 in Overall Dia (MPN S3-04-30). Key specifications — Brand: MERSEN; Body Material: Graphite.
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.

More from MERSEN

View all MERSEN parts →
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.
MERSEN Rupture Disc with Bar Support: 20 psig Burst Pressure, 6 in Compatible Pipe Size, Graphite (MPN S3-06-20B). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc with Bar Support: 20 psig Burst Pressure, 6 in Compatible Pipe Size, Graphite (MPN S3-06-20B). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc: 100 psig Burst Pressure, 2 in Compatible Pipe Size, 3 9/10 in Overall Dia (MPN S3-02-100). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 100 psig Burst Pressure, 2 in Compatible Pipe Size, 3 9/10 in Overall Dia (MPN S3-02-100). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc with Bar Support: 20 psig Burst Pressure, 3 in Compatible Pipe Size, Graphite (MPN S3-03-20B). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc with Bar Support: 20 psig Burst Pressure, 3 in Compatible Pipe Size, Graphite (MPN S3-03-20B). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc: 150 psig Burst Pressure, 3 in Compatible Pipe Size, 5 1/10 in Overall Dia (MPN S3-03-150). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 150 psig Burst Pressure, 3 in Compatible Pipe Size, 5 1/10 in Overall Dia (MPN S3-03-150). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc: 30 psig Burst Pressure, 3 in Compatible Pipe Size, 5 1/10 in Overall Dia (MPN S3-03-30). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 30 psig Burst Pressure, 3 in Compatible Pipe Size, 5 1/10 in Overall Dia (MPN S3-03-30). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN Rupture Disc: 100 psig Burst Pressure, 3 in Compatible Pipe Size, 5 1/10 in Overall Dia (MPN S3-03-100). Key specifications — Brand: MERSEN; Body Material: Graphite.
MERSEN
MERSEN Rupture Disc: 100 psig Burst Pressure, 3 in Compatible Pipe Size, 5 1/10 in Overall Dia (MPN S3-03-100). Key specifications — Brand: MERSEN; Body Material: Graphite.