Mersen 20316 Class H/K Fuse Bl...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$27.74
Mersen 20316 Class H/K Fuse Block, 250V AC/DC Screw Connector

Mersen 20316 Class H/K Fuse Block, 250V AC/DC Screw Connector

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Model: 20316

In Stock (leaves warehouse same day if ordered before 3pm ET)

$27.74
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Mersen 20316 Class H/K Fuse Block, 250V AC/DC Screw Connector

The Mersen 20316 Class H/K fuse block family is engineered to accommodate Class H and K power fuses rated 250VAC/250VDC, using a direct screw mount connector that accepts stranded or solid copper or aluminum wire. This series is available in 1-pole and 3-pole configurations, allowing panel builders to select the pole count that matches their circuit layout while sharing the same screw-connector design, insulating body, and fuse clip construction across every option. Each block features a molded glass-filled polycarbonate (GFPC) insulator with dielectric strength verified in excess of 2500V and a spring-reinforced, high-conductivity tinplated copper fuse clip for a secure, low-resistance connection. Built for 50/60 Hz AC/DC service with a clip-in fuse installation method, these blocks are RoHS compliant and designed for reliable, code-compliant performance in industrial and commercial power distribution equipment.

Key Features

  • Pole Configurations: Available in 1-pole and 3-pole versions, letting specifiers scale from single-circuit blocks to full 3-pole assemblies.
  • Voltage Rating: 250VAC/250VDC for Class H and K power fuses across every pole configuration in the series.
  • Screw Connector: Direct screw mount terminal accepts stranded or solid copper or aluminum wire, torque rated to 20 lb-in.
  • Reinforced Clip: Spring-reinforced, high-conductivity tinplated copper fuse clip provides a secure, low-resistance fuse connection that resists loosening under vibration.
  • Durable Construction: Molded glass-filled polycarbonate (GFPC) insulating body with verified dielectric strength in excess of 2500V for long-term reliability.
  • AC/DC Rated: Suitable for 50/60 Hz AC or DC applications, giving specifiers flexibility across power distribution designs.
  • Clip-In Installation: Fast, tool-free clip-in fuse installation method simplifies fuse replacement and routine maintenance.
  • Modular Multipole Design: Compatible adder blocks snap onto the 1-pole or 3-pole base blocks to build segmented multipole configurations as panel designs require.
  • Direct Screw Mount: Mounts securely to panel surfaces for straightforward integration into switchboards and control enclosures.

Certifications & Compliance

  • RoHS Compliant

Technical Specifications

  • ROHS Compliant: Yes
  • Body/Insulating Material: Glass Filled Polycarbonate
  • Number of Poles Available: 1-Pole, 3-Pole

Typical Applications

  • Industrial and Commercial Power Distribution Equipment
  • Fuse Panels and Disconnect Switch Assemblies
  • Motor Control Centers
  • Electrical Switchboards and Panelboards
  • OEM Panel Building and Control Enclosures
  • Renovation and New Construction Electrical Projects

Why Mersen?

Mersen fuse blocks combine a glass-filled polycarbonate insulating body, verified dielectric strength in excess of 2500V, and spring-reinforced tinplated copper clips to deliver a dependable, code-compliant connection point for Class H and K power fuses. The RoHS-compliant construction, direct screw mount connector, and modular adder-block design make these blocks a solid choice for professionals building reliable, serviceable power distribution assemblies that need to scale from 1-pole to 3-pole configurations without switching fuse block families.

Manufacturer Resources

Mersen Product Catalog

Product Specs

Installation Mounting:
Direct Screw Mount
Torque Rating:
20 lb-in
ROHS Compliant:
Yes
Frequency (Hz):
50/60 Hz
AC or DC:
AC/DC
Fuse Installation Method:
Clip-in
Body/Insulating Material:
Glass Filled Polycarbonate
list_batch:
MERSEN-20260825
Product Type:
Fuse Block
Department:
Electrical
Product Group:
Circuit Protection
Product Material:
Glass Filled Polycarbonate
Connection Type:
Screw
Voltage Rating:
250VAC/250VDC
Standards:
RoHS
Product Subgroup:
Fuse Holders & Blocks

Mersen 20316 – Frequently Asked Questions

1) What fuse class and voltage does the Mersen 20316 fuse block take?
It is built for Class H and Class K power fuses rated 250VAC/250VDC, on 50/60 Hz AC or DC service. If your fuses are Class R, Class G, or Class CC, this is the wrong block - those classes have different rejection features and clip spacing. For a 600V Class R application, the Littelfuse LFR60030-3CID is the Class R block; for 600V Class G, the Littelfuse LFG60015-1SQDINR.
2) What is the terminal torque spec on the Mersen 20316 screw connector?
Terminals are torque rated to 20 lb-in. The screw connector takes stranded or solid copper or aluminum conductors, so set your driver to 20 lb-in and re-check after the first heat cycle on aluminum runs.
3) What is the difference between the Mersen 20316 and 30618T?
They are the same screw-connector Class H/K block family in two wire-range sizes: part 20316 is the 3/8-inch option and part 30618T is the 1/2-inch option. Body material, clip design, and the 250VAC/250VDC rating are the same on both, so pick by the conductor size landing on the terminal.
4) Can I build a 2-pole or 4-pole assembly with these Mersen Class H/K blocks?
Yes. The series ships as 1-pole and 3-pole blocks, and compatible adder blocks snap onto either base to build segmented multipole configurations. So a 2-pole is a 1-pole plus one adder, and a 4-pole is a 3-pole plus an adder - you stay in the same fuse block family instead of switching series.
5) Is there an equivalent fuse block for Class G fuses on a DIN rail instead of the Mersen 20316?
The Mersen 20316 mounts by direct screw mount to a panel surface and takes Class H/K fuses. If the panel is DIN rail based and the fuses are Class G, the Littelfuse LFG60015-1SQDINR is a Class G fuse block rated 600V 15A with DIN rail mounting. That is a different fuse class and a different mounting method, so it is a design choice made at the panel layout stage, not a drop-in swap.
6) Can I use a Bussmann Class CC modular block in place of the Mersen 20316?
No. The Bussmann CHCC2DIU is a 2-pole Class CC modular fuse block with a finger-safe cover and blown-fuse indicator, sized for Class CC fuses. The Mersen 20316 family accepts Class H and K power fuses at 250VAC/250VDC in 1-pole and 3-pole configurations. The two fuse classes differ in body dimensions and clip spacing, so one will not seat in the other's block.
7) Is the Mersen 20316 fuse block body strong enough for a vibrating motor control cabinet?
The insulator is molded glass filled polycarbonate with dielectric strength verified in excess of 2500V, and the fuse clip is spring-reinforced tinplated copper specifically so the fuse connection resists loosening under vibration. That combination is what makes it suitable for motor control centers and disconnect switch assemblies.
8) We need a bolt-in power fuse block rather than a screw-mount one. What is the alternative to the Mersen 20316?
The Mersen 20316 uses a direct screw mount to the panel surface with terminals torqued to 20 lb-in. If the enclosure is drilled and tapped for bolt-in mounting, the Littelfuse LD Series POWR-BLOKS fuse block uses bolt-in mounting. Confirm the fuse class your circuit calls for before substituting, since the 20316 is specifically a Class H/K block.
9) I need more than three poles. Does the Mersen 20316 scale, or should I look at a different block?
The Mersen 20316 family comes in 1-pole and 3-pole versions, and compatible adder blocks snap onto those bases to build segmented multipole assemblies, so the pole count grows without changing fuse block families. If instead the circuit is small glass AGC fuses rather than Class H/K power fuses, the Bussmann 3833 Series block is offered in 1 to 8-pole configurations. For two-pole modular layouts, the Bussmann BCM603 Series is a two-pole modular fuse block.
10) Which block gives me a blown-fuse indicator if the Mersen 20316 does not?
The Mersen 20316 is a clip-in Class H/K block with a glass-filled polycarbonate body and spring-reinforced tinplated copper clips, built around fast fuse replacement rather than status indication. If maintenance crews want to see a blown fuse without pulling it, the Bussmann CHCC2DIU is a Class CC modular block offered finger-safe with an indicator, and the Littelfuse LFR60030-3CID Class R block is a CID version. Both are different fuse classes, so the indicator comes with a change of fuse family.
11) Do I need tools to change a fuse in a Mersen 20316 block?
No. Fuses install clip-in, so a replacement pushes straight into the spring-reinforced clips with no terminal screws to break loose. You only touch the screw terminals when landing or re-terminating conductors, and those go to 20 lb-in.
12) Is the Mersen 20316 fuse block RoHS compliant for a government or institutional spec?
Yes, the Class H/K block is RoHS compliant, and RoHS is the standard called out on it. That is the compliance item carried on this product; if your submittal also requires a finger-safe design with blown-fuse indication, the Bussmann CHCC2DIU is a finger-safe Class CC block with an indicator.
How fast can I get the Mersen 20316 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Mersen 20316 come with a warranty?
Absolutely. The Mersen 20316 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Mersen 20316?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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