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MERSEN TR300R Time-Delay Blade Fuse - Time-Delay Blade Fuses
MERSENTime-Delay Blade Fuses

MERSEN TR300R Time-Delay Blade Fuse

The MERSEN TR-R Series TR300R is a Class RK5 time-delay blade fuse rated for 300 A at 250 V AC and 250 V DC. This non-indicating fuse is designed for overcurrent protection in industrial electrical systems…

SKU 3G-OTH-26996

Brand
MERSEN
Item
TR300R Time-Delay Blade Fuse
Part Number
TR300R
Category
Time-Delay Blade Fuses
Available to Order
Also known as:TR300RMERSEN
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Technical Specifications

MERSEN
Manufacturer Part Number
TR300R
Series
TR-R
Type
TR-R Series, Time-Delay, 300 A, Non-Indicating
AC
250 V
DC
250 V

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

Product Description

The MERSEN TR-R Series TR300R is a Class RK5 time-delay blade fuse rated for 300 A at 250 V AC and 250 V DC. This non-indicating fuse is designed for overcurrent protection in industrial electrical systems, supporting applications across 14 departments—and we supply far more than is listed. Our specialist depth in controls and electrical components, including authorized distribution for brands like Schneider and ABB, ensures you get the right solution, not just a catalog.

Frequently Asked Questions

What is the MERSEN TR300R fuse used for?

The MERSEN TR300R is a Class RK5 time-delay fuse rated 300 A at 250 V AC/DC. It protects industrial motor circuits, transformers, and lighting systems from overloads and short circuits. Its time-delay characteristic allows temporary inrush currents without nuisance opening, making it suitable for equipment with high starting currents.

What are the specifications of the MERSEN TR300R fuse?

The MERSEN TR300R is a Class RK5, TR-R Series, time-delay, non-indicating blade fuse. It is rated 300 A, 250 V AC, and 250 V DC. The manufacturer part number is TR300R. It is designed for overcurrent protection in industrial power distribution and motor control applications.

Where to buy MERSEN TR300R fuses worldwide?

You can source the MERSEN TR300R fuse worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We supply genuine MERSEN components to industrial buyers internationally.

How to select the correct MERSEN TR-R series fuse for an application?

Select the MERSEN TR-R series fuse based on system voltage (250 V AC/DC max), continuous current rating (e.g., 300 A for TR300R), and required time-delay characteristics. Ensure the fuse class (RK5) matches the fuse holder and interrupting rating. Consult the manufacturer's data sheet for coordination with upstream devices.

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

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Class RK5 time-delay blade fuse rated 90 A at 250 V AC and 250 V DC. Features an indicating function for visual blown-fuse detection. Suitable for overload and short-circuit protection in power distribution equipment
MERSEN
Class RK5 time-delay blade fuse rated 90 A at 250 V AC and 250 V DC. Features an indicating function for visual blown-fuse detection. Suitable for overload and short-circuit protection in power distribution equipment

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