Littelfuse SOO Series Dual-Ele...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$48.93
Littelfuse SOO Series Dual-Element Type S Slo-Blo Plug Fuse, 125V

Littelfuse SOO Series Dual-Element Type S Slo-Blo Plug Fuse, 125V

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Model: SOO014

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

$48.93
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Littelfuse SOO Series Dual-Element Type S Slo-Blo Plug Fuse, 125V

The Littelfuse SOO Series is a line of dual-element, time-delay Type S plug fuses engineered primarily for motor and motor branch-circuit protection, while remaining fully suitable for all general purpose circuits. Every fuse in the SOO Series is rated 125VAC and is available in ampere ratings from 0.5A to 14A, so electricians can match precise overcurrent protection to the exact circuit requirement. The Slo-Blo (Time Lag/Time Delay) opening characteristic lets these fuses ride through momentary inrush current and motor starting surges without nuisance blowing, while still opening reliably under sustained overload conditions to protect wiring and connected equipment. The Type S base is a standard plug fuse package size designed for panels equipped with Type S fuse holders, helping prevent installation of an incorrectly rated fuse.

Key Features

  • Ampere Rating Range: the SOO Series is available from 0.5A to 14A, allowing precise overcurrent protection sized to the connected motor or branch circuit.
  • Voltage Rating: 125VAC rating suits standard residential and commercial plug fuse panels.
  • Time-Delay (Slo-Blo) Opening: Time Lag/Time Delay (T) opening characteristic allows momentary motor starting inrush current to pass while still protecting against sustained overloads.
  • Dual-Element Construction: combines a fast-acting overload element with a thermal time-delay element for dependable motor and motor branch-circuit protection.
  • Type S Plug Fuse Base: the standard Type S base package size is designed for Type S fuse holders and helps prevent installation of an incorrectly rated fuse.
  • General Purpose Versatility: also suitable for all general purpose circuits beyond motor branch-circuit protection, making the SOO Series a practical replacement fuse for a range of plug-fuse panels.
  • Package Size: supplied as a compact plug fuse for direct installation into compatible Type S fuse holders.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Motor and Motor Branch-Circuit Protection
  • General Purpose Electrical Circuits
  • Residential and Commercial Plug Fuse Panels
  • Control Circuits and Pilot Devices
  • Renovation and Fuse Replacement Projects

Why Littelfuse?

Littelfuse SOO Series fuses pair dual-element, time-delay construction with a Type S plug fuse base to deliver dependable overcurrent protection for motors and general purpose circuits alike. With ampere ratings spanning 0.5A to 14A at 125VAC, the SOO Series gives electrical professionals a plug fuse built to ride out motor starting inrush while still opening reliably under sustained overload, making it a dependable choice for panels that require the Type S base configuration.

Product Specs

Voltage Rating:
125VAC
Product Type:
Plug Fuse
Amperage Rating:
0.5A - 14A
Series:
SOO
Department:
Electrical
Product Group:
Circuit Protection
Product Subgroup:
Fuses

Littelfuse SOO014 – Frequently Asked Questions

1) Will a Littelfuse SOO plug fuse screw into my old Edison-base fuse panel?
Not directly. The SOO Series uses a Type S base, which only threads into a Type S fuse holder. Older panels with plain Edison (Type W) sockets need a Type S adapter installed in the socket first, and once that adapter is in it is sized to one amp range, so the panel will then only accept SOO fuses of that matching rating. That rejection feature is the whole point of the Type S base: it stops someone dropping a 20A fuse into a 15A circuit.
2) My fuse keeps blowing when the motor starts. Will a dual-element time-delay fuse fix that?
That is exactly what the SOO Series is built for. The dual-element, Slo-Blo (time lag) construction lets motor starting inrush pass without opening, while the overload element still clears a sustained overcurrent. If a fast-acting fuse of the correct amp rating is nuisance-blowing on startup, a time-delay fuse of the same rating is the right swap. If it is blowing while the motor runs steady, that is a real overload or a fault, and a time-delay fuse will not mask it.
3) Which amp ratings does the Littelfuse SOO Series come in?
Ampere ratings run from 0.5A up to 14A, including the 0.5A (SOO.500) and 14A (SOO014) ends of the range. Size the fuse to the circuit conductor and the connected motor load, not to whatever was in the holder before.
4) Is the SOO Series only for motors, or can I use it on lighting and receptacle circuits?
It works on both. The SOO Series is engineered primarily for motor and motor branch-circuit protection but is suitable for all general purpose circuits, including residential and commercial plug fuse panels, control circuits and pilot devices. For a property manager restocking a building with fused panels, one series covers the whole panel.
5) What is the difference between a Type S fuse and a Type W plug fuse?
Both screw into a plug fuse panel, but Type W has a plain Edison thread that accepts any amp rating, while Type S uses a rejection thread matched to the rating so a higher-amp fuse cannot be fitted to a smaller circuit. The Littelfuse SOO Series is the Type S dual-element time-delay version. If your panel has plain sockets with no adapters, you are looking at a Type W fuse unless you retrofit adapters.
6) Do I need one fuse per circuit or can I buy the SOO Series in a pack for a whole building?
Each SOO fuse protects one circuit, ordered by amp rating: a single ampere value per fuse from 0.5A through 14A. For an MRO or multi-family stock room, the practical approach is to inventory the ratings that actually appear in your panels rather than the full range, since a Type S adapter locks each socket to one rating anyway.
How fast can I get the Littelfuse SOO014 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 Littelfuse SOO014 come with a warranty?
Absolutely. The Littelfuse SOO014 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 Littelfuse SOO014?
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
Why buy the Littelfuse SOO014 from ZenSupply?
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