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MERSEN TR400R Time-Delay Blade Fuse, 400 A, 250 V AC/DC, Class RK5, TR-R Series - Time-Delay Blade Fuses
MERSENTime-Delay Blade Fuses

MERSEN TR400R Time-Delay Blade Fuse, 400 A, 250 V AC/DC, Class RK5, TR-R Series

The MERSEN TR-R Series TR400R is a Class RK5 time-delay blade fuse rated 400 A at 250 V AC and 250 V DC. This non-indicating fuse is designed for overcurrent protection in industrial electrical systems, supporting…

SKU 3G-OTH-28404

Brand
MERSEN
Item
TR400R Time-Delay Blade Fuse, 400 A, 250 V AC/DC, Class RK5, TR-R Series
Part Number
TR400R
Category
Time-Delay Blade Fuses
Available to Order
Also known as:TR400RMERSEN
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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
TR400R
Series
TR-R
Type
TR-R Series, Time-Delay, 400 A, Non-Indicating
AC
250 V
DC
250 V

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MERSEN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MERSEN TR-R Series TR400R is a Class RK5 time-delay blade fuse rated 400 A at 250 V AC and 250 V DC. This non-indicating fuse is designed for overcurrent protection in industrial electrical systems, supporting applications across 14 departments including electrical and instrumentation. As an authorised distributor with specialist depth in controls, 3G Electric interprets demand and delivers genuine MERSEN fuses with technical support.

Frequently Asked Questions

What is the MERSEN TR400R fuse used for?

The MERSEN TR400R is a Class RK5 time-delay blade fuse rated 400 A at 250 V AC/DC. It protects industrial circuits with high inrush loads, such as motors, transformers, and lighting systems, by allowing temporary current surges without nuisance opening.

What are the specifications of the MERSEN TR400R fuse?

The MERSEN TR400R is a TR-R Series, time-delay, non-indicating fuse rated 400 A, 250 V AC and 250 V DC. It is a Class RK5 blade fuse with the manufacturer part number TR400R. These specs ensure reliable overcurrent protection in industrial power distribution.

Where to buy MERSEN TR400R fuses worldwide?

3G Electric supplies the MERSEN TR400R fuse 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 on this TR-R Series time-delay fuse.

How to select the correct MERSEN TR400R fuse for an application?

Select the MERSEN TR400R by matching its 400 A rating and 250 V AC/DC voltage to your circuit's full-load current and system voltage. The time-delay feature suits motor or transformer starting. Always verify the fuse's Class RK5 rejection clip compatibility and consult a qualified engineer.

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 blade fuses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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