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Littelfuse 03420012H Panel Mount Fuse Holder

Littelfuse 342 Series Panel Mount Enclosed Fuse Holders provide a secure and protected environment for 3AG fuses in a variety of industrial applications. These fuse holders are designed for panel mounting and offer a range of terminal options including straight, right angle, and quick-connect configurations. They are rated for 20 amperes up to 250 volts and feature a robust thermoplastic construction (UL94 V-0). Watertight versions are available with an O-ring seal per MIL-PRF-19207, making them suitable for harsh environments. The fuse holders are UL listed and designed to withstand mounting torque and provide reliable fuse protection.

Authorized Distributors
Source:Newark
Part No:03420012H
Stock:650
Inv Date:05-28-2026
Price: Unit price: $5.18
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Source:DigiKey
Part No:03420012H
Stock:1649
Inv Date:05-28-2026
Price: Unit price: $5.48
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Part No:03420012H
Stock:1158
Inv Date:05-29-2026
Price: Unit price: $5.05
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Part No:03420012H
Stock:31
Inv Date:05-28-2026
Price: Unit price: $4.86
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Part No:03420012H
Stock:540
Inv Date:05-28-2026
Price: Unit price: $1.75
Buy/RFQ:
Part No:03420012H
Stock:3267
Inv Date:05-29-2026
Price: N/A
Buy/RFQ:

Littelfuse 03420012H Panel Mount Fuse Holder Specifications:

  • compatible_fuses: 3AG
  • electrical_rating: 20 amperes, up to 250 volts
  • ambient_temperature_range: –40ºC to +85ºC
  • dielectric_strength: 2400 volts minimum (General Application), 1500 volts minimum (Watertight)
  • mounting_torque_withstand: 15 lb.-in.
  • panel_thickness_max: .187” (General Application), .250” (Watertight)
  • material_body: Black thermoplastic (UL94 V-0)
  • material_o_ring: Black thermoset (UL94 V-0)
  • terminals: Tin plated (Copper & copper alloy), ¼” Quick-Connect terminals nickel plated
  • agency_approvals: UL (IZLT2.E14721), CSA (007316)
  • product_dimensions: Refer to datasheet images for detailed dimensions.

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Frequently Asked Questions

Where can I buy Littelfuse 03420012H?

You can click on the BUY or RFQ button to purchase 03420012H from an authorized Littelfuse distributor.

How do I troubleshoot issues or seek technical support for part 03420012H?

You can download the 03420012H datasheet or visit the Littelfuse website for support.

Who is the manufacturer of 03420012H?

Littelfuse

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