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MERSEN 21037 Fuse Block, 2-Pole, 250 V AC, Box Lug, Non-Indicating, Open Design - Fuse Blocks for UL Class H & K Fuses
MERSENFuse Blocks for UL Class H & K Fuses

MERSEN 21037 Fuse Block, 2-Pole, 250 V AC, Box Lug, Non-Indicating, Open Design

MERSEN Fuse Blocks for UL Class H & K Fuses.

SKU 3G-OTH-129433

Brand
MERSEN
Item
21037 Fuse Block, 2-Pole, 250 V AC, Box Lug, Non-Indicating, Open Design
Category
Fuse Blocks for UL Class H & K Fuses
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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
21037

Technical Documents

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

Product Description

MERSEN Fuse Blocks for UL Class H & K Fuses.

Frequently Asked Questions

What is a MERSEN fuse block used for?

A MERSEN fuse block securely holds UL Class H and K fuses in industrial control panels, motor circuits, and distribution boards. It provides reliable overcurrent protection and safe fuse replacement in manufacturing, HVAC, and power systems worldwide.

What are the specifications of the MERSEN 21037 fuse block?

The MERSEN 21037 is a 2-pole open block design rated for 250 V AC. It uses box lug terminals and is non-indicating. This fuse block accepts UL Class H and K fuses, making it suitable for general-purpose industrial overcurrent protection.

Where to buy MERSEN fuse blocks worldwide?

3G Electric supplies MERSEN fuse blocks like the 21037 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this open block design for UL Class H and K fuses.

How to install a MERSEN open block fuse block?

Mount the MERSEN 21037 on a DIN rail or panel using the integral slots. Connect line and load wires to the box lug terminals, torquing to manufacturer specifications. Insert the correct UL Class H or K fuse and verify polarity before energizing the 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 h & k 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
This MERSEN fuse block is a 1-pole, open block design rated for 250 V AC. It features a box lug terminal and is non-indicating. Designed to accept UL Class H and K fuses, it is used for mounting and connecting fuses in industrial electrical circuits such as panel boards and motor control centers
MERSEN
This MERSEN fuse block is a 1-pole, open block design rated for 250 V AC. It features a box lug terminal and is non-indicating. Designed to accept UL Class H and K fuses, it is used for mounting and connecting fuses in industrial electrical circuits such as panel boards and motor control centers
This MERSEN fuse block is designed for UL Class H and K fuses, providing a 3-pole open block configuration rated at 250 V AC. It features box lug terminals and a non-indicating design. Typical applications include panel boards, motor control centers, and distribution equipment where easy fuse access and replacement are required
MERSEN
This MERSEN fuse block is designed for UL Class H and K fuses, providing a 3-pole open block configuration rated at 250 V AC. It features box lug terminals and a non-indicating design. Typical applications include panel boards, motor control centers, and distribution equipment where easy fuse access and replacement are required
This MERSEN fuse block is a 2-pole, open block design rated for 250 V AC. It features box lug terminals and is non-indicating. Designed to accept UL Class H and K fuses, it is used for mounting and connecting fuses in industrial electrical circuits such as panel boards and distribution equipment
MERSEN
This MERSEN fuse block is a 2-pole, open block design rated for 250 V AC. It features box lug terminals and is non-indicating. Designed to accept UL Class H and K fuses, it is used for mounting and connecting fuses in industrial electrical circuits such as panel boards and distribution equipment
Open-block fuse block for mounting and connecting UL Class H and K fuses. Single-pole design rated for 250 V AC with box-lug terminals. Non-indicating type suitable for use in panel boards, motor control centers, and distribution equipment
MERSEN
Open-block fuse block for mounting and connecting UL Class H and K fuses. Single-pole design rated for 250 V AC with box-lug terminals. Non-indicating type suitable for use in panel boards, motor control centers, and distribution equipment
Single-pole open block fuse holder for UL Class H and K fuses. Rated 250 V AC with box lug terminals. Non-indicating design. Used in panel boards, motor control centers, and distribution equipment for fuse mounting and connection
MERSEN
Single-pole open block fuse holder for UL Class H and K fuses. Rated 250 V AC with box lug terminals. Non-indicating design. Used in panel boards, motor control centers, and distribution equipment for fuse mounting and connection
This MERSEN fuse block is a 3-pole, open block design rated for 250 V AC. It features box lug terminals and is non-indicating. Designed to accept UL Class H and K fuses, it is used in panel boards, motor control centers, and distribution equipment for overcurrent protection
MERSEN
This MERSEN fuse block is a 3-pole, open block design rated for 250 V AC. It features box lug terminals and is non-indicating. Designed to accept UL Class H and K fuses, it is used in panel boards, motor control centers, and distribution equipment for overcurrent protection

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This 3-pole open block design fuse block is rated for 600 V AC and accepts UL Class H and K fuses. It features screw-type terminals and a non-indicating design. Suitable for mounting and connecting fuses in industrial control panels, motor circuits, and distribution equipment
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This 3-pole open block design fuse block is rated for 600 V AC and accepts UL Class H and K fuses. It features screw-type terminals and a non-indicating design. Suitable for mounting and connecting fuses in industrial control panels, motor circuits, and distribution equipment
This MERSEN fuse block is designed to safely hold and connect UL Class H and K fuses in industrial electrical circuits. It features a 3-pole open block design with box lug terminals, rated for 250 V AC. The non-indicating block provides overcurrent protection in motor control centers, panelboards, and distribution equipment
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This MERSEN fuse block is designed to safely hold and connect UL Class H and K fuses in industrial electrical circuits. It features a 3-pole open block design with box lug terminals, rated for 250 V AC. The non-indicating block provides overcurrent protection in motor control centers, panelboards, and distribution equipment
This MERSEN fuse block is a 3-pole, open-block design rated for 600 V AC. It features box lug terminals and is non-indicating. Designed to accept UL Class H and K fuses, it is used for mounting and connecting fuses in industrial electrical panels, motor control centers, and distribution boards
MERSEN
This MERSEN fuse block is a 3-pole, open-block design rated for 600 V AC. It features box lug terminals and is non-indicating. Designed to accept UL Class H and K fuses, it is used for mounting and connecting fuses in industrial electrical panels, motor control centers, and distribution boards
Open block fuse block for UL Class H and K fuses. 3 poles, 600 V AC rating. Pressure plate terminals, non-indicating design. Used in industrial electrical panels for overcurrent protection
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Open block fuse block for UL Class H and K fuses. 3 poles, 600 V AC rating. Pressure plate terminals, non-indicating design. Used in industrial electrical panels for overcurrent protection
This 3-pole fuse block is rated for 250 V AC and accepts UL Class H and K fuses. It features pressure-plate terminals for secure wire connections and a non-indicating design. The open-block construction facilitates wiring in control panels, motor circuits, and branch-circuit protection applications
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This 3-pole fuse block is rated for 250 V AC and accepts UL Class H and K fuses. It features pressure-plate terminals for secure wire connections and a non-indicating design. The open-block construction facilitates wiring in control panels, motor circuits, and branch-circuit protection applications
This MERSEN fuse block is an open-block design with 2 poles, rated for 250 V AC. It features box lug terminals for secure wire connections and is non-indicating. Designed to accept UL Class H and K fuses, it is used for overcurrent protection in industrial control panels, motor circuits, and distribution equipment
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This MERSEN fuse block is an open-block design with 2 poles, rated for 250 V AC. It features box lug terminals for secure wire connections and is non-indicating. Designed to accept UL Class H and K fuses, it is used for overcurrent protection in industrial control panels, motor circuits, and distribution equipment
Single-pole open-block fuse holder rated 250 V AC. Accepts UL Class H and K fuses. Features pressure-plate terminals and non-indicating design. Used in panel boards, motor control centers, and distribution equipment for overcurrent protection
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Single-pole open-block fuse holder rated 250 V AC. Accepts UL Class H and K fuses. Features pressure-plate terminals and non-indicating design. Used in panel boards, motor control centers, and distribution equipment for overcurrent protection
Open-style fuse block for UL Class H and K fuses. Single-pole design rated 250 V AC with box lug terminals. Non-indicating type suitable for overcurrent protection in industrial control panels and distribution equipment
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Open-style fuse block for UL Class H and K fuses. Single-pole design rated 250 V AC with box lug terminals. Non-indicating type suitable for overcurrent protection in industrial control panels and distribution equipment