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MERSEN RF Series Fast-Acting Cylindrical Fuse - Fast-Acting Cylindrical Fuses
MERSENFast-Acting Cylindrical Fuses

MERSEN RF Series Fast-Acting Cylindrical Fuse

The MERSEN RF Series Fast-Acting Cylindrical Fuse (MPN RF40) is a Class H, 40 A, 250 V AC, non-indicating fuse. This fast-acting fuse is designed for overcurrent protection in industrial electrical circuits.

SKU 3G-OTH-27513

Also listed as: RF 40 · RF-40

Brand
MERSEN
Item
RF Series Fast-Acting Cylindrical Fuse
Part Number
RF40
Category
Fast-Acting Cylindrical Fuses
Available to Order
Also known as:RF40MERSEN
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Technical Specifications

MERSEN
Manufacturer Part Number
RF40
Series
RF

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3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MERSEN RF Series Fast-Acting Cylindrical Fuse (MPN RF40) is a Class H, 40 A, 250 V AC, non-indicating fuse. This fast-acting fuse is designed for overcurrent protection in industrial electrical circuits.

Frequently Asked Questions

What is the MERSEN RF40 fuse used for?

The MERSEN RF40 is a Class H, fast-acting cylindrical fuse rated 40 A and 250 V AC. It provides overcurrent protection in industrial electrical circuits, safeguarding equipment like motors, transformers, and control panels from short circuits and overloads.

What are the specifications of the MERSEN RF40 fuse?

The MERSEN RF40 is a fast-acting, non-indicating fuse from the RF Series. It is rated 40 A at 250 V AC and meets Class H standards. The manufacturer part number is RF40, and it is designed for cylindrical fuse holders in industrial applications.

Where to buy the MERSEN RF40 fuse worldwide?

You can source the MERSEN RF40 fuse through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring reliable supply for your maintenance or project needs.

How to select the correct MERSEN RF40 fuse for a circuit?

To select the MERSEN RF40, verify your circuit's voltage does not exceed 250 V AC and the continuous current is at or below 40 A. Ensure the fuse holder accepts Class H cylindrical fuses. For fast-acting protection, match the fuse's interrupting rating to your system's fault current.

Used in

Common applications for MERSEN
Industrial control panels — Mersen USCC1 and USCC2 UL Class CC fuse blocks for DIN rail mounting and finger-safe branch circuit protection.
Motor starters — Mersen ATQ time-delay fuses and DAR0 R-rated fuses for motor overload and short-circuit protection.
Power supplies and instrumentation — Mersen GGM and GSB fast-acting cylindrical fuses for overcurrent protection in compact electronic circuits.
DC systems — Mersen A30QS very-fast-acting square fuses rated 300 V DC for semiconductor and DC equipment protection.
Medium-voltage distribution — Mersen DAR0 R-rated fuses rated 5.08 kV AC for general-purpose overcurrent protection with visual indication.
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MERSEN Products

3G Electric supplies MERSEN fast-acting cylindrical fuses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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