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MERSEN Fuse: SMF Series, Time-Delay, 4 A - Time-Delay Fuses with Integrated Insulating Caps
MERSENTime-Delay Fuses with Integrated Insulating Caps

MERSEN Fuse: SMF Series, Time-Delay, 4 A

The MERSEN SMF Series Time-Delay Fuse (MPN SMF4) is a 4 A, 300 V AC cylindrical fuse with integrated insulating caps. This time-delay fuse is designed for overcurrent protection in industrial equipment.

SKU 3G-OTH-24076

Brand
MERSEN
Item
Fuse: SMF Series, Time-Delay, 4 A
Category
Time-Delay Fuses with Integrated Insulating Caps
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Technical Specifications

MERSEN
Manufacturer Part Number
SMF4
Series
SMF
Body Style
Cylindrical
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MERSEN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MERSEN SMF Series Time-Delay Fuse (MPN SMF4) is a 4 A, 300 V AC cylindrical fuse with integrated insulating caps. This time-delay fuse is designed for overcurrent protection in industrial equipment.

Frequently Asked Questions

What is the MERSEN SMF4 fuse used for?

The MERSEN SMF4 is a 4 A, 300 V AC time-delay fuse used for overcurrent protection in industrial equipment. Its cylindrical body with integrated insulating caps suits panel and machinery applications where reliable, delayed-blow response is needed to handle inrush currents without nuisance tripping.

What are the specifications of the MERSEN SMF4 fuse?

The MERSEN SMF4 is a cylindrical time-delay fuse rated 4 A at 300 V AC. It belongs to the SMF series and features integrated insulating caps. The manufacturer part number is SMF4. These specs make it suitable for protecting circuits in industrial control panels and power distribution.

Where to buy MERSEN SMF4 fuses worldwide?

3G Electric supplies the MERSEN SMF4 fuse to customers worldwide. As a global industrial sourcing partner, we handle full logistics and customs clearance to deliver this 4 A, 300 V AC time-delay fuse to your facility. Contact us for a quote and delivery timeline.

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

Select the MERSEN SMF series fuse by matching the voltage (300 V AC max) and current rating (e.g., 4 A for SMF4) to your circuit's requirements. Consider the time-delay characteristic for motor or transformer inrush. Always verify the interrupting rating and physical dimensions for your fuse holder.

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 time-delay fuses with integrated insulating caps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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