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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 1 A, 250 V AC, 250 V DC - Time-Delay Cylindrical Fuses
MERSENTime-Delay Cylindrical Fuses

MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 1 A, 250 V AC, 250 V DC

The MERSEN TR-R Series Class RK5 Time-Delay Cylindrical Fuse (SKU 3G-OTH-25789, MPN TR1R) is a 1 A, non-indicating fuse rated for 250 V AC and 250 V DC. As a time-delay fuse, it accommodates temporary inrush currents…

SKU 3G-OTH-25789

Brand
MERSEN
Item
Fuse: Class RK5, TR-R Series, Time-Delay, 1 A, 250 V AC, 250 V DC
Category
Time-Delay Cylindrical Fuses
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Local availability & support

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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
TR1R
Series
TR-R
Type
TR-R Series, Time-Delay, 1 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 Class RK5 Time-Delay Cylindrical Fuse (SKU 3G-OTH-25789, MPN TR1R) is a 1 A, non-indicating fuse rated for 250 V AC and 250 V DC. As a time-delay fuse, it accommodates temporary inrush currents while providing overcurrent protection across 14 industrial departments, with specialist depth in combustion, pumps, and controls as an authorised distributor.

Frequently Asked Questions

What is the MERSEN TR1R fuse used for?

The MERSEN TR1R is a Class RK5, time-delay cylindrical fuse rated 1 A, 250 V AC/DC. It protects industrial circuits against overloads and short circuits, commonly used in motor control centers, panel boards, and branch circuits where inrush currents occur.

What are the specifications of the MERSEN TR1R fuse?

The MERSEN TR1R is part of the TR-R series, a Class RK5 time-delay fuse. It has a current rating of 1 A, voltage rating of 250 V AC and 250 V DC, and is non-indicating. The manufacturer part number is TR1R.

Where to buy MERSEN TR1R fuses worldwide?

3G Electric supplies MERSEN TR1R fuses worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this TR-R series fuse.

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

Select the MERSEN TR-R fuse based on system voltage (250 V AC/DC), continuous current (1 A for TR1R), and required time-delay characteristics for motor or transformer inrush. Always verify the Class RK5 rejection feature ensures proper fit in compatible fuse holders.

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, 500 mA, 250 V AC, 250 V DC, Non-Indicating (MPN TR1/2R)
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MERSEN Fuse: Class RK5, TR-R Series, Time-Delay, 500 mA, 250 V AC, 250 V DC, Non-Indicating (MPN TR1/2R)
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