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Mersen Edison Base Screw-In Plug Fuse
The Mersen Edison Base Screw-In Plug Fuse is built for industrial and residential branch-circuit protection, with brass contacts, an Edison base body style, and a 125 VAC rating across a 1-30A ampere range. Non-time-delay versions are intended for receptacle and lighting circuits, while time-delay versions are suited to motor loads. For Canadian requirements, Type "P" fuses cover non-motor loads and Type "D" fuses cover electrical heating and cyclical load circuits; Type "S" plug fuses add time-delay, tamper-resistant protection. This family is UL Listed to Standard 248-11 (File E76208) and CSA Certified (Class 142301, File 15525).
Key Features
- Ampere Range: 1-30A covers a wide span of branch-circuit and motor-load protection needs.
- Durable Construction: Brass contact materials provide reliable, low-resistance electrical connections.
- Body Style: Edison Base Plug design with screw-in mounting for straightforward panel installation.
- Connection Terminal: Screw terminal type simplifies wiring during installation and replacement.
- Voltage Rating: 125 VAC rating suits standard residential and light industrial circuits.
- Time-Delay and Non-Time-Delay Options: Non-time-delay fuses serve receptacle and lighting circuits; time-delay fuses protect motor loads.
- Canadian Market Types: Type "P" for non-motor loads and Type "D" for electrical heating and cyclical load circuits, both with low melting-point elements.
- Tamper-Resistant Option: Type "S" plug fuses combine time-delay operation with tamper-resistant design.
Certifications & Compliance
- UL Listed to Standard 248-11, File E76208
- CSA Certified, Class 142301, File 15525
Technical Specifications
- Refer to manufacturer documentation for complete technical specifications.
Typical Applications
- Industrial and Residential Electrical Installations
- Receptacle and Lighting Circuits
- Motor Load Circuits (Time-Delay Fuses)
- Canadian Electrical Heating and Cyclical Load Circuits (Type "D")
- Non-Motor Load Circuits (Type "P")
- Panel and Fuse Box Replacement
Why Mersen?
Mersen plug fuses pair brass contact construction with an Edison base, screw-in design that is UL Listed to Standard 248-11 and CSA Certified, giving electricians and facility owners a dependable, code-recognized option for branch-circuit protection. With both time-delay and non-time-delay versions, plus Canadian Type "P", Type "D", and tamper-resistant Type "S" options, the line covers receptacle, lighting, heating, and motor-load circuits from a single trusted manufacturer. Choose Mersen plug fuses at ZenSupply for reliable, compliant overcurrent protection across residential and industrial electrical systems.
Manufacturer Resources
Mersen Product Catalog
Product Specs
- Materials Contact:
- Brass
- Body Style:
- Edison Base Plug
- Mounting Method:
- Screw In
- Ac Voltage:
- 125 VAC
- Connection Terminal Type:
- Screw
- Lead Free:
- Consult Technical Services
- Ampere Range:
- 1-30 A
- Class:
- Plug
- ROHS Compliant:
- Consult Technical Services
- Ce Conformity:
- Consult Technical Services
- Applications:
- Industrial and residential Receptacle and lighting circuits
- list_batch:
- MERSEN-20260825
- Product Type:
- Plug Fuse
- Department:
- Electrical
- Product Group:
- Circuit Protection
- Product Subgroup:
- Fuses
Mersen SAG15 – Frequently Asked Questions
1) Will a Mersen SAG15 Edison base plug fuse screw into an old fuse box socket?
Yes. The SAG15 is an Edison base plug fuse with screw-in mounting, so it threads directly into the standard Edison (medium screw shell) sockets found in older residential and light industrial fuse panels. No adapter and no panel modification are needed.
2) What voltage circuits can these Mersen plug fuses be used on?
125 VAC. That covers standard 120 V residential and light industrial branch circuits. It does not cover 240 V circuits, so do not use a plug fuse of this rating on a two-pole 240 V load.
3) Do I need a time-delay or non-time-delay plug fuse for a motor circuit?
Time-delay. Motor loads draw a heavy inrush at start, and the non-time-delay versions of the Mersen Edison base plug fuse are intended for receptacle and lighting circuits, where there is no starting surge. Mersen offers the line in both, so specify the time-delay version for anything with a motor.
4) What amp ratings do Mersen Edison base plug fuses come in?
The family spans 1 to 30 A, so it covers everything from small control and lighting circuits up to a 30 A branch. Match the fuse amperage to the conductor and the load it protects, not to the highest rating the socket will accept.
5) What is the difference between Type P, Type D, and Type S plug fuses in Canada?
For Canadian installations, Mersen Type "P" plug fuses are for non-motor loads and Type "D" are for electrical heating and cyclical load circuits, both built with low melting-point elements. Type "S" plug fuses add time-delay operation together with a tamper-resistant design, which is what you use where you want to prevent someone fitting an oversized fuse later.
6) Will a tenant be able to swap in a bigger fuse than the circuit allows?
With a standard Edison base plug fuse, yes, because every rating in the 1 to 30 A range threads into the same socket. If you manage rental or multi-family units and want that prevented, specify the Type "S" plug fuse instead, which Mersen offers as a tamper-resistant, time-delay design.
7) Is the Mersen SAG15 the same thing as a set-screw lug connector?
No, and this is a common mix-up. The SAG15 is a plug-class fuse, an overcurrent protective device that screws into a fuse socket. If you are after a mechanical conductor termination, the NSi Industries aluminum dual-rated set-screw lug (Series T) or the NSi 2-port stacked lug connector in aluminum alloy (Series T2) are the parts you want instead. A fuse and a lug are not substitutes for one another.
8) Can an NSi Industries T series set-screw lug be used in place of a Mersen SAG15 plug fuse?
No. The Mersen SAG15 is an Edison base plug fuse rated 125 VAC that screws into a fuse holder to provide overcurrent protection on receptacle and lighting circuits. The NSi 300T is a set-screw lug in the T series, a mechanical conductor termination with no fusing element, so it does not interrupt a fault and cannot occupy a fuse socket.
9) I need to land two conductors under one connection point on a fused panel - does the Mersen SAG15 do that?
No. The SAG15 uses a single screw-in mounting with a screw connection terminal and brass contacts, so it seats in one fuse socket and protects one branch circuit. For terminating two conductors at a single point, the NSi 350T-2 is a 2-port stacked lug connector in aluminum alloy, T2 series, which is a mechanical termination used alongside rather than instead of the fuse.
10) What are the contacts made of on the Mersen Edison base plug fuse?
Brass, which keeps contact resistance low and limits heating at the screw shell, the usual failure point in an aging fuse panel. The terminal connection type is screw.
How fast can I get the Mersen SAG15 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 SAG15 come with a warranty?
Absolutely. The Mersen SAG15 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 SAG15?
You can call, text, or email our expert support team for fast answers. We’re here to help with
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installation tips, and troubleshooting. Contact Us
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