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MERSEN TR3-1/2R Time-Delay Cylindrical Fuse - Time-Delay Cylindrical Fuses
MERSENTime-Delay Cylindrical Fuses

MERSEN TR3-1/2R Time-Delay Cylindrical Fuse

The MERSEN TR-R Series Class RK5 Time-Delay Cylindrical Fuse (MPN TR3-1/2R) is a 3.5 A, non-indicating fuse rated for 250 V AC and 160 V DC. As a time-delay fuse, it accommodates temporary inrush currents while…

SKU 3G-OTH-27041

Also listed as: TR312R · TR3 1 2R · TR3-1-2R

Brand
MERSEN
Item
TR3-1/2R Time-Delay Cylindrical Fuse
Part Number
TR3-1/2R
Category
Time-Delay Cylindrical Fuses
Available to Order
Also known as:TR3-1/2RMERSEN
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Technical Specifications

MERSEN
Manufacturer Part Number
TR3-1/2R
Series
TR-R
Type
TR-R Series, Time-Delay, 3.5 A, Non-Indicating
AC
250 V
DC
160 V

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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 TR3-1/2R) is a 3.5 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.

Frequently Asked Questions

What is a MERSEN TR-R time-delay fuse used for?

The MERSEN TR-R series time-delay fuse (3.5 A, 250 V AC / 160 V DC) protects motor circuits and equipment with high inrush currents. Its non-indicating design suits industrial control panels, HVAC systems, and pump drives where reliable overload protection is needed without visual indication.

What are the specifications of the MERSEN TR3-1/2R fuse?

The MERSEN TR3-1/2R is a Class RK5, TR-R series, time-delay cylindrical fuse rated 3.5 A, 250 V AC and 160 V DC. It is non-indicating and designed for branch-circuit protection. The manufacturer part number is TR3-1/2R, and it is part of the TR-R series.

Where to buy MERSEN TR3-1/2R fuses worldwide?

3G Electric supplies MERSEN TR3-1/2R fuses worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility. Contact us for a quote on this Class RK5, time-delay fuse for your motor or control circuit application.

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

Select a MERSEN TR-R time-delay fuse by matching the voltage (250 V AC or 160 V DC) and current rating (e.g., 3.5 A) to the motor full-load amps. The time-delay characteristic handles startup inrush without nuisance opening. Always verify the interrupting rating meets system fault current.

Used in

Common applications for MERSEN
Industrial control panels — Mersen USCC1 and USCC2 UL Class CC fuse blocks for DIN rail mounting and finger-safe branch circuit protection.
Motor starters — Mersen ATQ time-delay fuses and DAR0 R-rated fuses for motor overload and short-circuit protection.
Power supplies and instrumentation — Mersen GGM and GSB fast-acting cylindrical fuses for overcurrent protection in compact electronic circuits.
DC systems — Mersen A30QS very-fast-acting square fuses rated 300 V DC for semiconductor and DC equipment protection.
Medium-voltage distribution — Mersen DAR0 R-rated fuses rated 5.08 kV AC for general-purpose overcurrent protection with visual indication.
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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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