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MERSEN Fuse Block: Open Block Design, 2 Pole, 250 V AC, Box Lug - Fuse Blocks for UL Class RK1 & RK5 Fuses
MERSENFuse Blocks for UL Class RK1 & RK5 Fuses

MERSEN Fuse Block: Open Block Design, 2 Pole, 250 V AC, Box Lug

SKU 3G-OTH-26819

Brand
MERSEN
Item
Fuse Block: Open Block Design, 2 Pole, 250 V AC, Box Lug
Category
Fuse Blocks for UL Class RK1 & RK5 Fuses
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Technical Specifications

MERSEN
Manufacturer Part Number
20657R
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MERSEN Products
3G Electric (S) Pte. Ltd. — Singapore

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
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 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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