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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 4 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 A, 250 V AC, 160 V DC

The MERSEN TR-R Series Class RK5 Time-Delay Cylindrical Fuse (MPN TR4R) is a 4 A, non-indicating fuse rated for 250 V AC and 160 V DC. As a time-delay fuse, it accommodates temporary inrush currents while providing…

SKU 3G-OTH-27056

Brand
MERSEN
Item
Fuse: Class RK5, TR-R Series, Time-Delay, 4 A, 250 V AC, 160 V DC
Category
Time-Delay Cylindrical Fuses
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Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

MERSEN
Manufacturer Part Number
TR4R
Series
TR-R
Type
TR-R Series, Time-Delay, 4 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 TR4R) is a 4 A, non-indicating fuse rated for 250 V AC and 160 V DC. As a time-delay fuse, it accommodates temporary inrush currents while providing overcurrent protection across 14 industrial departments — and we supply far more than is listed. Our specialist depth in combustion, pumps and controls serves as a trust anchor, ensuring we interpret your demand and deliver the right solution.

Frequently Asked Questions

What is the MERSEN TR4R fuse used for?

The MERSEN TR4R is a Class RK5 time-delay cylindrical fuse rated 4 A, 250 V AC, 160 V DC. It protects motor circuits, transformers, and lighting systems from overloads and short circuits, allowing harmless inrush currents without nuisance opening.

What are the specifications of the MERSEN TR4R fuse?

The MERSEN TR4R is part of the TR-R series, a Class RK5 time-delay fuse. It is rated 4 A, 250 V AC, 160 V DC, and is non-indicating. The manufacturer part number is TR4R. It is designed for cylindrical fuse holders in industrial control panels.

Where to buy MERSEN TR4R fuses worldwide?

3G Electric supplies the MERSEN TR4R fuse worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time. We source and deliver this Class RK5 time-delay fuse to any country.

How to select the correct MERSEN TR4R fuse for an application?

To select the MERSEN TR4R, verify the circuit voltage does not exceed 250 V AC or 160 V DC, and the continuous current is 4 A. Ensure the fuse holder accepts Class RK5 cylindrical fuses. The time-delay feature handles motor start-up surges without blowing.

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, 2.5 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR2-1/2R)
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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 2.5 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR2-1/2R)
MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 3.5 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR3-1/2R)
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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 3.5 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR3-1/2R)
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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 3.2 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR3-2/10R)
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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 2 A, 250 V AC, 250 V DC, Non-Indicating (MPN TR2R)
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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 12 A, 250 V AC, 160 V DC, Non-Indicating (MPN TR12R)

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