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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 4.5 A, 250 V AC, 160 V DC - Time-Delay Cylindrical Fuses
MERSENTime-Delay Cylindrical Fuses

MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 4.5 A, 250 V AC, 160 V DC

The MERSEN TR-R Series Class RK5 Time-Delay Cylindrical Fuse (MPN TR4-1/2R) is a 4.5 A, non-indicating fuse rated for 250 V AC and 160 V DC. 3G Electric interprets customer demand and delivers this genuine industrial…

SKU 3G-OTH-27063

Also listed as: TR412R · TR4 1 2R · TR4-1-2R

Brand
MERSEN
Item
Fuse: Class RK5, TR-R Series, Time-Delay, 4.5 A, 250 V AC, 160 V DC
Category
Time-Delay Cylindrical Fuses
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

MERSEN
Manufacturer Part Number
TR4-1/2R
Series
TR-R
Type
TR-R Series, Time-Delay, 4.5 A, Non-Indicating
AC
250 V
DC
160 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 TR4-1/2R) is a 4.5 A, non-indicating fuse rated for 250 V AC and 160 V DC. 3G Electric interprets customer demand and delivers this genuine industrial fuse across 14 departments, with specialist depth in electrical components as an authorised distributor.

Frequently Asked Questions

What is the MERSEN TR4-1/2R fuse used for?

The MERSEN TR4-1/2R is a Class RK5, time-delay cylindrical fuse rated 4.5 A, 250 V AC / 160 V 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 TR-R series fuse?

The MERSEN TR-R series fuse (MPN TR4-1/2R) is a Class RK5, time-delay, non-indicating fuse rated 4.5 A, 250 V AC and 160 V DC. It is designed for branch-circuit protection and meets UL/CSA standards for industrial applications.

Where to buy MERSEN TR4-1/2R fuses worldwide?

3G Electric supplies MERSEN TR4-1/2R fuses worldwide. As a global industrial distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.

How to select the correct MERSEN TR-R fuse for a circuit?

Select the MERSEN TR-R fuse based on continuous current (4.5 A), system voltage (250 V AC or 160 V DC), and time-delay requirements for motor or transformer starting. Always verify the interrupting rating and Class RK5 rejection features per NEC 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, 6 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR6R)
MERSEN
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 6 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR6R)
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)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 5 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR5R)
MERSEN
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 5 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR5R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 5.6 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR5-6/10R)
MERSEN
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 5.6 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR5-6/10R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 7 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR7R)
MERSEN
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 7 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR7R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 10 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR10R)
MERSEN
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 10 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR10R)

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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 1 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR1R)
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