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MERSEN TR125R Time-Delay Blade Fuse - Time-Delay Blade Fuses
MERSENTime-Delay Blade Fuses

MERSEN TR125R Time-Delay Blade Fuse

The MERSEN TR125R is a Class RK5 time-delay blade fuse from the TR-R Series, rated 125 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-27647

Brand
MERSEN
Item
TR125R Time-Delay Blade Fuse
Category
Time-Delay Blade Fuses
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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
TR125R
Series
TR-R
Type
TR-R Series, Time-Delay, 125 A, Non-Indicating
AC
250 V
DC
250 V

Technical Documents

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

Product Description

The MERSEN TR125R is a Class RK5 time-delay blade fuse from the TR-R Series, rated 125 A at 250 V AC and 250 V DC. This non-indicating fuse is designed for overcurrent protection in industrial electrical systems, supporting applications that require a time-delay characteristic to accommodate inrush currents.

Frequently Asked Questions

What is the MERSEN TR125R fuse used for?

The MERSEN TR125R is a Class RK5 time-delay blade fuse rated 125 A at 250 V AC/DC. It protects industrial motor circuits, transformers, and lighting systems from overloads and short circuits, allowing harmless inrush currents to pass without nuisance opening.

What are the specifications of the MERSEN TR125R fuse?

The MERSEN TR125R is part of the TR-R series, a Class RK5 time-delay blade fuse. It is rated 125 A, 250 V AC and 250 V DC, non-indicating. The manufacturer part number is TR125R. It is designed for overcurrent protection in industrial power distribution.

Where to buy the MERSEN TR125R fuse worldwide?

You can source the MERSEN TR125R fuse through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this TR-R series fuse.

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

Select the MERSEN TR-R fuse based on continuous load current, voltage rating (250 V AC/DC), and inrush characteristics. The TR125R is time-delay, suitable for motor starts. Verify the Class RK5 rejection feature fits your fuse holder. Consult the manufacturer's data sheet for coordination.

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.
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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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Compatible alternatives & equivalents

Cross-referenced by specification & description
Class RK5 time-delay blade fuse rated 225 A at 250 V AC and 250 V DC. Non-indicating type from the TR-R series. Provides overcurrent protection for circuits with motor loads, transformers, and lighting systems where inrush currents are present
MERSEN
Class RK5 time-delay blade fuse rated 225 A at 250 V AC and 250 V DC. Non-indicating type from the TR-R series. Provides overcurrent protection for circuits with motor loads, transformers, and lighting systems where inrush currents are present
The MERSEN TR250R is a Class RK5 time-delay blade fuse from the TR-R series, rated 250 A at 250 V AC and 250 V DC. It is non-indicating and designed for overcurrent protection in industrial circuits, such as motors, transformers, and lighting systems, where high inrush currents occur
MERSEN
The MERSEN TR250R is a Class RK5 time-delay blade fuse from the TR-R series, rated 250 A at 250 V AC and 250 V DC. It is non-indicating and designed for overcurrent protection in industrial circuits, such as motors, transformers, and lighting systems, where high inrush currents occur
The MERSEN TR100R is a Class RK5, TR-R series time-delay blade fuse rated for 100 A at 250 V AC and 250 V DC. It is non-indicating and designed for overcurrent protection in industrial electrical systems, such as motor, transformer, and lighting circuits, where temporary inrush currents occur
MERSEN
The MERSEN TR100R is a Class RK5, TR-R series time-delay blade fuse rated for 100 A at 250 V AC and 250 V DC. It is non-indicating and designed for overcurrent protection in industrial electrical systems, such as motor, transformer, and lighting circuits, where temporary inrush currents occur
Class RK5 time-delay blade fuse rated 150 A at 250 V AC and 250 V DC. Non-indicating design with time-delay characteristic to accommodate inrush currents. Suitable for overcurrent protection in industrial motor circuits, transformers, and lighting systems
MERSEN
Class RK5 time-delay blade fuse rated 150 A at 250 V AC and 250 V DC. Non-indicating design with time-delay characteristic to accommodate inrush currents. Suitable for overcurrent protection in industrial motor circuits, transformers, and lighting systems
The MERSEN TR200R is a Class RK5 time-delay blade fuse rated 200 A at 250 V AC and 250 V DC. Part of the TR-R Series, this non-indicating fuse provides overcurrent protection in industrial circuits, such as motor control centers, panelboards, and feeder circuits where high inrush currents occur
MERSEN
The MERSEN TR200R is a Class RK5 time-delay blade fuse rated 200 A at 250 V AC and 250 V DC. Part of the TR-R Series, this non-indicating fuse provides overcurrent protection in industrial circuits, such as motor control centers, panelboards, and feeder circuits where high inrush currents occur
The MERSEN TR175R is a Class RK5 time-delay blade fuse rated 175 A at 250 V AC and 250 V DC. Part of the TR-R series, it is non-indicating and designed for overcurrent protection in industrial electrical systems. Typical applications include motor circuits, transformers, and lighting systems where temporary inrush currents occur
MERSEN
The MERSEN TR175R is a Class RK5 time-delay blade fuse rated 175 A at 250 V AC and 250 V DC. Part of the TR-R series, it is non-indicating and designed for overcurrent protection in industrial electrical systems. Typical applications include motor circuits, transformers, and lighting systems where temporary inrush currents occur

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Class RK5 time-delay blade fuse rated 175 A at 600 V AC and 600 V DC. Non-indicating design for overcurrent protection in industrial power distribution, motor, and transformer circuits. Handles inrush currents to prevent nuisance opening
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Class RK5 time-delay blade fuse rated 175 A at 600 V AC and 600 V DC. Non-indicating design for overcurrent protection in industrial power distribution, motor, and transformer circuits. Handles inrush currents to prevent nuisance opening
Class RK5 time-delay blade fuse rated 100 A at 250 V AC and DC. The indicating feature provides visual confirmation of an open circuit. Suitable for overcurrent protection in motor and transformer circuits where inrush currents are present
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Class RK5 time-delay blade fuse rated 100 A at 250 V AC and DC. The indicating feature provides visual confirmation of an open circuit. Suitable for overcurrent protection in motor and transformer circuits where inrush currents are present
Class RK5 time-delay blade fuse rated 250 A at 600 V AC and 600 V DC. Features an indicating function for blown-fuse detection. Suitable for overcurrent and short-circuit protection in motor circuits, switchgear, and control panels
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Class RK5 time-delay blade fuse rated 250 A at 600 V AC and 600 V DC. Features an indicating function for blown-fuse detection. Suitable for overcurrent and short-circuit protection in motor circuits, switchgear, and control panels
Class RK5 time-delay blade fuse rated 100 A at 600 V AC and 600 V DC. Features an indicating function that visually signals when the fuse has opened. Suitable for overcurrent protection in branch circuits supplying motor starters, transformers, and other inductive loads
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Class RK5 time-delay blade fuse rated 100 A at 600 V AC and 600 V DC. Features an indicating function that visually signals when the fuse has opened. Suitable for overcurrent protection in branch circuits supplying motor starters, transformers, and other inductive loads
Class RK5 time-delay blade fuse from the TRS-R series, rated 450 A at 600 V AC and 600 V DC. Non-indicating design provides overcurrent protection for industrial motor circuits, transformers, and power distribution equipment, accommodating temporary inrush currents without nuisance opening
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Class RK5 time-delay blade fuse from the TRS-R series, rated 450 A at 600 V AC and 600 V DC. Non-indicating design provides overcurrent protection for industrial motor circuits, transformers, and power distribution equipment, accommodating temporary inrush currents without nuisance opening
Class RK5 time-delay blade fuse rated 75 A at 600 V AC and 600 V DC. Non-indicating type from the TRS-R series. Suitable for overcurrent protection in motor circuits, transformers, and lighting panels
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Class RK5 time-delay blade fuse rated 75 A at 600 V AC and 600 V DC. Non-indicating type from the TRS-R series. Suitable for overcurrent protection in motor circuits, transformers, and lighting panels
Class RK5 time-delay blade fuse from the TRS-RID series, rated 90 A at 600 V AC and 600 V DC. The indicating function provides visual blown-fuse detection. Designed for overcurrent protection of motor circuits, transformers, and other inductive loads where inrush currents are present
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Class RK5 time-delay blade fuse from the TRS-RID series, rated 90 A at 600 V AC and 600 V DC. The indicating function provides visual blown-fuse detection. Designed for overcurrent protection of motor circuits, transformers, and other inductive loads where inrush currents are present
Class RK5 time-delay blade fuse rated 300 A at 250 V AC and 250 V DC. Features visual indication for blown fuse status. Suitable for overcurrent protection in industrial motor circuits, transformers, and lighting panels
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Class RK5 time-delay blade fuse rated 300 A at 250 V AC and 250 V DC. Features visual indication for blown fuse status. Suitable for overcurrent protection in industrial motor circuits, transformers, and lighting panels