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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 500 mA, 250 V AC, 250 V DC - Time-Delay Cylindrical Fuses
MERSENTime-Delay Cylindrical Fuses

MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 500 mA, 250 V AC, 250 V DC

The MERSEN TR-R Series Class RK5 Time-Delay Cylindrical Fuse (MPN TR1/2R) is a 500 mA, non-indicating fuse rated for 250 V AC and 250 V DC. 3G Electric interprets demand and delivers this genuine industrial fuse…

SKU 3G-OTH-26874

Also listed as: TR12R · TR1 2R · TR1-2R

Brand
MERSEN
Item
Fuse: Class RK5, TR-R Series, Time-Delay, 500 mA, 250 V AC, 250 V DC
Category
Time-Delay Cylindrical Fuses
Available to Order
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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
TR1/2R
Series
TR-R
Type
TR-R Series, Time-Delay, 500 mA, 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 Class RK5 Time-Delay Cylindrical Fuse (MPN TR1/2R) is a 500 mA, non-indicating fuse rated for 250 V AC and 250 V DC. 3G Electric interprets demand and delivers this genuine industrial fuse across 14 departments — with specialist depth in controls to support your electrical protection needs.

Frequently Asked Questions

What is the MERSEN TR1/2R fuse used for?

The MERSEN TR1/2R is a Class RK5 time-delay cylindrical fuse rated 500 mA at 250 V AC/DC. It protects industrial 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 TR1/2R fuse?

The MERSEN TR1/2R is part of the TR-R series, with MPN TR1/2R. It is a non-indicating, time-delay Class RK5 fuse rated 500 mA, 250 V AC, and 250 V DC. It provides reliable overcurrent protection for industrial equipment.

Where to buy MERSEN TR1/2R fuses worldwide?

3G Electric supplies MERSEN TR1/2R fuses worldwide. As a global industrial distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the correct MERSEN TR1/2R fuse for a circuit?

Select the MERSEN TR1/2R fuse based on your circuit's voltage (250 V AC/DC max) and continuous current (500 mA). Ensure the Class RK5 time-delay characteristic matches motor or transformer inrush requirements. Consult a qualified electrician for proper 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.

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, 400 mA, 250 V AC, 250 V DC, Non-Indicating (MPN TR4/10R)
MERSEN
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 400 mA, 250 V AC, 250 V DC, Non-Indicating (MPN TR4/10R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 600 mA, 250 V AC, 250 V DC, Non-Indicating (MPN TR6/10R)
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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 600 mA, 250 V AC, 250 V DC, Non-Indicating (MPN TR6/10R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 1 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR1R)
MERSEN
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 1 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR1R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 800 mA, 250 V AC, 250 V DC, Non-Indicating (MPN TR8/10R)
MERSEN
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 800 mA, 250 V AC, 250 V DC, Non-Indicating (MPN TR8/10R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 1.125 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR1-1/8R)
MERSEN
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 1.125 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR1-1/8R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 1.6 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR1-6/10R)
MERSEN
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 1.6 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR1-6/10R)

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MERSEN Fuse: Class RK5, TRS-R Series, Time-Delay, 3 A, 600 V AC, 600 V DC, Non-Indicating (MPN TRS3R)
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MERSEN Fuse: Class RK5, TRS-R Series, Time-Delay, 3 A, 600 V AC, 600 V DC, Non-Indicating (MPN TRS3R)
MERSEN Fuse: GSF Series, Time-Delay, 2 A, 250 V AC, Non-Indicating, 5 mm x 20 mm, S505, 477, & GSF (MPN GSF2)
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MERSEN Fuse: GSF Series, Time-Delay, 2 A, 250 V AC, Non-Indicating, 5 mm x 20 mm, S505, 477, & GSF (MPN GSF2)
MERSEN Fuse: Class RK5, TRS-R Series, Time-Delay, 2.25 A, 600 V AC, 600 V DC, Non-Indicating (MPN TRS2-1/4R)
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MERSEN Fuse: Class RK5, TRS-R Series, Time-Delay, 2.25 A, 600 V AC, 600 V DC, Non-Indicating (MPN TRS2-1/4R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 6.25 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR6-1/4R)
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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 6.25 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR6-1/4R)