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Littelfuse 03420058H Panel Mount Enclosed Fuse Holder

Littelfuse 342 Series Panel Mount Enclosed Fuse Holders provide a secure and protected environment for 3AG fuses in various industrial applications. These fuse holders are designed for panel mounting and offer features like watertight seals (for specific models) and robust mechanical strength. Constructed with thermoplastic or thermoset materials (UL94 V-0 rated), they ensure fire safety and reliable performance. The terminals are tin-plated for excellent conductivity, and quick-connect options are available for ease of installation. They are ideal for applications requiring high voltage and current protection in a compact and durable package.

Authorized Distributors
Source:Newark
Part No:03420058H
Stock:61
Inv Date:05-28-2026
Price: Unit price: $6.45
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Source:DigiKey
Part No:03420058H
Stock:86
Inv Date:05-28-2026
Price: Unit price: $6.83
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Part No:03420058H
Stock:208
Inv Date:05-29-2026
Price: Unit price: $6.74
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Part No:03420058H
Stock:0
Inv Date:05-28-2026
Price: Unit price: $6.49
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Part No:03420058H
Stock:0
Inv Date:05-28-2026
Price: Unit price: $2.99
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Littelfuse 03420058H Panel Mount Enclosed Fuse Holder Specifications:

  • Application: General Application, Watertight Product
  • Terminal Type: Straight Terminal, Right Angle Terminal
  • Compatible Fuses: 3AG
  • Electrical Rating: 20 amperes, up to 250 volts
  • Ambient Temperature: -40ºC to +85ºC
  • Dielectric Strength: 2400 volts minimum (General), 1500 volts minimum (Watertight)
  • Mounting Torque: 15 lb.-in. maximum
  • Panel Thickness: .187” (General), .250” (Watertight)
  • Material: Molded Black thermoplastic (UL94 V-0), Black thermoset (UL94 V-0)
  • Seal: Watertight seal per MIL-PRF-19207 (Watertight models)
  • Terminals: Tin plated (Copper & copper alloy), Nickel plated (¼” Quick-Connect)
  • Hardware: Mounting nut and neoprene washer, O-rings (2) (unassembled)

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Frequently Asked Questions

Where can I buy Littelfuse 03420058H?

You can click on the BUY or RFQ button to purchase 03420058H from an authorized Littelfuse distributor.

How do I troubleshoot issues or seek technical support for part 03420058H?

You can download the 03420058H datasheet or visit the Littelfuse website for support.

Who is the manufacturer of 03420058H?

Littelfuse

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