Automotive Circuit Protection

4 Circuit ATO/ATC Blade Fuse Block – 32V DC

This 4 circuit fuse block with cover distributes one common DC power input across four individually fused branch circuits. Designed for standard ATO/ATC blade fuses, it supports up to 32V DC with a maximum input current of 100A and up to 30A per circuit.

The unit features a plastic housing, clear plastic protective cover and stainless steel screws.

其他信息

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Built for Reliable Electrical Protection

Product Overview

4 Circuit Blade Fuse Block for ATO/ATC Fuses

A 4 circuit blade fuse block provides a centralized way to distribute one DC power input across four individually fused branch circuits. Designed for standard ATO/ATC blade fuses, it allows several electrical loads to share the same power source while each branch remains separately protected.

This fuse block supports systems up to 32V DC, with a 100A maximum input current and a 30A maximum current per circuit. It features a plastic housing, a clear plastic protective cover and stainless steel screws for organized low-voltage DC circuit distribution.

Key Features

  • Four individually fused branch circuits
  • Designed for standard ATO/ATC blade fuses
  • Maximum input voltage: 32V DC
  • Maximum input current: 100A
  • Maximum current per circuit: 30A
  • Common power input for four fused branch circuits
  • Plastic housing
  • Clear plastic protective cover
  • Stainless steel screws
  • Centralized layout for multi-circuit DC distribution

Specifications

Item Specification
Model CZY-FB02
Product Type 4 Circuit Blade Fuse Block
Number of Circuits 4
Compatible Fuse Type ATO/ATC Standard Blade Fuse
Maximum Input Voltage 32V DC
Maximum Input Current 100A
Maximum Current per Circuit 30A
Housing Material Plastic
Cover Material Plastic
Cover Type Clear Protective Cover
Screw Material Stainless Steel
Electrical Configuration Common Input / 4 Fused Branch Circuits

Applications

A 4 circuit blade fuse block is useful in low-voltage DC systems where several accessories share one main power source but require separate branch circuit protection.

  • Automotive accessory circuits
  • Vehicle electrical systems
  • RV auxiliary electrical systems
  • Protected marine DC installations
  • Lighting circuits
  • Accessory power distribution
  • Low-voltage equipment wiring
  • Custom DC electrical assemblies

How Does a 4 Circuit Blade Fuse Block Work?

The common DC input supplies four separate ATO/ATC fuse positions. Each position feeds an individual branch circuit, so every connected load can have its own fuse rather than relying on one fuse for all downstream accessories.

This 4 circuit blade fuse block therefore combines power distribution and individual branch protection within one centralized unit, helping keep multi-circuit wiring easier to organize and service.

How to Select the Correct Fuse

The 30A maximum per circuit is the maximum current capacity of each circuit position. It does not mean that every position should use a 30A fuse.

The actual fuse rating should be selected according to the connected load, conductor size and circuit protection requirements of that individual branch. Different positions in the same fuse block may therefore use different fuse ratings.

The entire system must also remain within the 100A maximum input current. Four circuit positions rated up to 30A each should not be interpreted as a 120A total fuse block rating.

4 Circuit Blade Fuse Block vs. Inline Fuse Holders

An individual inline fuse holder is suitable for protecting a single electrical circuit. When several accessories require separate protection, however, installing multiple independent fuse holders can make the wiring layout more difficult to organize.

A 4 circuit blade fuse block combines four independently fused branches in one location, making it easier to centralize accessory power distribution and identify individual circuits during inspection or maintenance.

Protective Cover Design

The clear plastic cover forms a physical barrier over the blade fuse positions while keeping the installed fuses visible. This allows the fuse area to remain accessible for inspection without leaving the fuse positions completely exposed.

The protective cover should not be interpreted as an IP waterproof rating. Installation conditions should still be considered when selecting the mounting location.

Selection Notes

  • Confirm that system voltage does not exceed 32V DC.
  • Keep the complete fuse block within the 100A maximum input rating.
  • Do not exceed 30A on any individual circuit position.
  • Select each fuse according to its branch load and conductor requirements.
  • Do not assume all four positions require the same fuse rating.
  • A protective cover does not by itself indicate an IP waterproof rating.

FAQ

What type of fuse does this 4 circuit blade fuse block use?

It is designed for standard ATO/ATC blade fuses.

Does every circuit require a 30A fuse?

No. The 30A value is the maximum current rating for each circuit position. The actual fuse rating should be selected according to the branch wiring, connected load and required circuit protection.

Can all four circuits carry 30A at the same time?

The complete fuse block has a maximum input current rating of 100A. The total electrical design must therefore remain within the 100A limit even though each individual circuit position supports up to 30A.

Can this fuse block be used in a 12V or 24V system?

Yes. Both 12V and 24V DC systems are within the confirmed 32V DC maximum input voltage, provided the complete electrical design remains within the applicable current limits.

Does the clear cover make the fuse block waterproof?

No IP waterproof rating is specified. The cover provides physical protection over the fuse positions but should not be treated as evidence of an IP-rated enclosure.

OEM / ODM Support

Cozy Electronics provides OEM and ODM support for automotive electrical components, circuit protection products and custom electrical assemblies. Buyers can provide system voltage, circuit quantity, branch current requirements, fuse specifications and application information for project evaluation.

Contact Cozy Electronics for product details, bulk purchasing and OEM/ODM project requirements.

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