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MERSEN 20657R Fuse Block - Fuse Blocks for UL Class RK1 & RK5 Fuses
MERSENFuse Blocks for UL Class RK1 & RK5 Fuses

MERSEN 20657R Fuse Block

MERSEN Fuse Blocks for UL Class RK1 & RK5 Fuses.

SKU 3G-OTH-26819

Also listed as: 20657 R · 20657-R

Brand
MERSEN
Item
20657R Fuse Block
Part Number
20657R
Category
Fuse Blocks for UL Class RK1 & RK5 Fuses
Available to Order
Also known as:20657RMERSEN
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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
20657R

Technical Documents

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

Product Description

MERSEN Fuse Blocks for UL Class RK1 & RK5 Fuses.

Frequently Asked Questions

What is a MERSEN 20657R fuse block used for?

The MERSEN 20657R fuse block is used to safely mount and connect UL Class RK1 or RK5 fuses in industrial control panels, motor circuits, and power distribution systems. Its open block design and box lug terminals simplify wiring in electrical enclosures across manufacturing, HVAC, and process industries.

What are the specifications of the MERSEN 20657R fuse block?

The MERSEN 20657R is a 2-pole, open block design fuse block rated for 250 V AC. It accepts UL Class RK1 and RK5 fuses and uses box lug terminals for secure wire connections. The non-indicating version provides reliable overcurrent protection without a blown-fuse indicator.

Where to buy a MERSEN 20657R fuse block worldwide?

3G Electric supplies the MERSEN 20657R fuse block to customers worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this and other MERSEN fuse block models.

How to install a MERSEN 20657R fuse block?

Mount the MERSEN 20657R on a DIN rail or panel using the integral clips. Strip wires to the recommended length, insert into the box lug terminals, and torque to the manufacturer's specification. Always disconnect power before installation and verify fuse class compatibility with your circuit.

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 fuse blocks for ul class rk1 & rk5 fuses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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