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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 40 A, 250 V AC, 250 V DC - Time-Delay Cylindrical Fuses
MERSENTime-Delay Cylindrical Fuses

MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 40 A, 250 V AC, 250 V DC

The MERSEN TR-R Series TR40R is a Class RK5, time-delay cylindrical fuse rated at 40 A, 250 V AC and 250 V DC. This non-indicating fuse is designed for overcurrent protection in industrial electrical circuits…

SKU 3G-OTH-27280

Brand
MERSEN
Item
Fuse: Class RK5, TR-R Series, Time-Delay, 40 A, 250 V AC, 250 V DC
Category
Time-Delay Cylindrical 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
TR40R
Series
TR-R
Type
TR-R Series, Time-Delay, 40 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 TR-R Series TR40R is a Class RK5, time-delay cylindrical fuse rated at 40 A, 250 V AC and 250 V DC. This non-indicating fuse is designed for overcurrent protection in industrial electrical circuits, supporting reliable operation across 14 departments—and we supply far more than is listed. Our specialist depth in controls and electrical components, backed by authorized distribution for brands like MERSEN, ensures you get the right solution for your application.

Frequently Asked Questions

What is the MERSEN TR40R fuse used for?

The MERSEN TR40R is a Class RK5 time-delay cylindrical fuse rated 40 A at 250 V AC/DC. It protects motor circuits, transformers, and lighting systems from overloads and short circuits, allowing temporary inrush currents without nuisance opening.

What are the specifications of the MERSEN TR40R fuse?

The MERSEN TR40R is part of the TR-R series, a Class RK5 time-delay fuse. It is rated 40 A, 250 V AC, and 250 V DC, non-indicating. The manufacturer part number is TR40R, and it is designed for industrial overcurrent protection.

Where to buy the MERSEN TR40R fuse worldwide?

You can source the MERSEN TR40R 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 operations.

How to select the correct MERSEN TR40R fuse for an application?

Select the MERSEN TR40R fuse by matching its 40 A rating and 250 V AC/DC voltage to your circuit's load and voltage. Ensure the Class RK5 time-delay characteristic suits motor or transformer starting currents. Consult the TR-R series datasheet for coordination guidelines.

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 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 45 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR45R)
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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 45 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR45R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 35 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR35R)
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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 35 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR35R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 30 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR30R)
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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 30 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR30R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 50 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR50R)
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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 50 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR50R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 60 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR60R)
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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 60 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR60R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 20 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR20R)
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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 20 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR20R)

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