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

MERSEN Semiconductor Fuse: A30QS Series, Fast-Acting, 150 A, 300 V AC - Fast-Acting Bolt-On Fuses
MERSENFast-Acting Bolt-On Fuses

MERSEN Semiconductor Fuse: A30QS Series, Fast-Acting, 150 A, 300 V AC

The MERSEN A30QS Series Semiconductor Fuse (MPN A30QS150-4) is a fast-acting bolt-on fuse rated at 150 A, 300 V AC, and 300 V DC. This AC/DC voltage type fuse is designed for overcurrent protection in power…

SKU 3G-OTH-25769

Also listed as: A30QS1504 · A30QS150 4

Brand
MERSEN
Item
Semiconductor Fuse: A30QS Series, Fast-Acting, 150 A, 300 V AC
Category
Fast-Acting Bolt-On Fuses
Available to Order
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
A30QS150-4
Series
A30QS
Type
Fast-Acting, 150 A
AC
300 V
Voltage Type
AC/DC
DC DC Volt Rating
300 V

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 A30QS Series Semiconductor Fuse (MPN A30QS150-4) is a fast-acting bolt-on fuse rated at 150 A, 300 V AC, and 300 V DC. This AC/DC voltage type fuse is designed for overcurrent protection in power electronic circuits.

Frequently Asked Questions

What is the MERSEN A30QS150-4 semiconductor fuse used for?

The MERSEN A30QS150-4 is a fast-acting bolt-on fuse rated at 150 A, 300 V AC, and 300 V DC. It provides overcurrent protection in power electronic circuits such as drives, inverters, and UPS systems where rapid fault clearing is critical.

What are the specifications of the MERSEN A30QS150-4 fuse?

The MERSEN A30QS150-4 is a 150 A, 300 V AC/DC fast-acting semiconductor fuse from the A30QS series. It has a bolt-on mounting style and is rated for both AC and DC voltage applications. The manufacturer part number is A30QS150-4.

Where to buy the MERSEN A30QS150-4 fuse worldwide?

3G Electric supplies the MERSEN A30QS150-4 semiconductor fuse to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this fast-acting bolt-on fuse.

How to select the right MERSEN A30QS series fuse for my application?

Select the MERSEN A30QS fuse based on your circuit's continuous current (150 A for this model), voltage rating (300 V AC/DC), and fault current capability. Ensure the bolt-on mounting matches your panel layout. Consult the fuse's time-current curve for coordination with upstream protection.

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 fast-acting bolt-on fuses. 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

Compatible alternatives & equivalents

Cross-referenced by specification & description
Semiconductor Fuse: A30QS Series, Fast-Acting, 300 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS300-4)
MERSEN
Semiconductor Fuse: A30QS Series, Fast-Acting, 300 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS300-4)
Semiconductor Fuse: A30QS Series, Fast-Acting, 200 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS200-4)
MERSEN
Semiconductor Fuse: A30QS Series, Fast-Acting, 200 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS200-4)
Semiconductor Fuse: A30QS Series, Fast-Acting, 250 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS250-4)
MERSEN
Semiconductor Fuse: A30QS Series, Fast-Acting, 250 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS250-4)
Semiconductor Fuse: A30QS Series, Fast-Acting, 500 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS500-4)
MERSEN
Semiconductor Fuse: A30QS Series, Fast-Acting, 500 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS500-4)
Semiconductor Fuse: A30QS Series, Fast-Acting, 100 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS100-4)
MERSEN
Semiconductor Fuse: A30QS Series, Fast-Acting, 100 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS100-4)
Semiconductor Fuse: A30QS Series, Fast-Acting, 600 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS600-4)
MERSEN
Semiconductor Fuse: A30QS Series, Fast-Acting, 600 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS600-4)

More from MERSEN

View all MERSEN parts
Semiconductor Fuse: A30QS Series, Fast-Acting, 60 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS60-4)
MERSEN
Semiconductor Fuse: A30QS Series, Fast-Acting, 60 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS60-4)
Semiconductor Fuse: A60X Series, Fast-Acting, 60 A, 600 V AC, Non-Indicating (MPN A60X60-4)
MERSEN
Semiconductor Fuse: A60X Series, Fast-Acting, 60 A, 600 V AC, Non-Indicating (MPN A60X60-4)
Semiconductor Fuse: A70Q Series, Fast-Acting, 125 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q125-4)
MERSEN
Semiconductor Fuse: A70Q Series, Fast-Acting, 125 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q125-4)
Semiconductor Fuse: A15QS Series, Fast-Acting, 60 A, 150 V AC, 150 V DC DC Volt Rating (MPN A15QS60-4)
MERSEN
Semiconductor Fuse: A15QS Series, Fast-Acting, 60 A, 150 V AC, 150 V DC DC Volt Rating (MPN A15QS60-4)
MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 250 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J250)
MERSEN
MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 250 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J250)
Semiconductor Fuse: A60X Series, Fast-Acting, 200 A, 600 V AC, Non-Indicating (MPN A60X200-4)
MERSEN
Semiconductor Fuse: A60X Series, Fast-Acting, 200 A, 600 V AC, Non-Indicating (MPN A60X200-4)
Semiconductor Fuse: A30QS Series, Fast-Acting, 80 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS80-4)
MERSEN
Semiconductor Fuse: A30QS Series, Fast-Acting, 80 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS80-4)
Semiconductor Fuse: A70Q Series, Fast-Acting, 90 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q90-4)
MERSEN
Semiconductor Fuse: A70Q Series, Fast-Acting, 90 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q90-4)