Switches & Fuses

Q: What is the difference between a momentary and a self-locking push button switch?

A momentary push button switch only completes (or breaks) a circuit while it is physically held down — it returns to its default state when released. A self-locking (latching) push button switch stays in the activated position after being pressed and only returns to its original state when pressed again. Our 12mm Pushbutton Switches Self-Lock & Momentary OFF-ON – 10 Pack includes both types so you can choose what suits your circuit.

Q: What is a thermal cutoff fuse and when do I need one?

A thermal cutoff fuse (TCO) is a one-time safety device that permanently opens a circuit when a preset temperature is exceeded, preventing overheating damage or fire. They are commonly used in hair dryers, coffee makers, motors, transformers, and other heat-generating appliances. Our 10Pcs Ceramic Thermal Cutoff Fuses are available in multiple trip temperatures (185°C and 230°C) and current ratings (10A, 15A, 20A) to match a wide range of appliances.

Q: Can I use a DC PWM dimmer switch for AC LED lights?

No — DC PWM dimmer switches are designed exclusively for DC voltage systems (such as 12V or 24V LED strips in cars, boats, or RVs) and must not be used on AC mains circuits. For standard household AC lighting, please use an AC-rated rotary dimmer such as our 120V Rotary Dimmer Switch – LED & Lamp Brightness Controller, which is built and rated for mains voltage.

Q: How do I choose the right fuse holder for my application?

The key factors are the fuse size (5×20mm or 6×30mm are the most common standard sizes), the voltage rating (ensure the holder is rated for your circuit voltage, e.g., AC250V), and the mounting method (panel mount for enclosures, inline for wiring harnesses). Our 10Pcs Glass Tube Fuse Holders support both popular fuse sizes and are rated to AC250V, making them a versatile choice for most projects.

Switches & Fuses — Reliable Electrical Control & Protection

Whether you're wiring a home project, repairing electronics, or building a custom control panel, having the right switches and fuses is essential for safety and performance. Our Switches & Fuses collection brings together a comprehensive range of electrical components — from push button switches and dimmer controls to thermal cutoff fuses and circuit breaker enclosures. Every product is selected for quality, durability, and compliance with standard electrical ratings, so you can tackle any project with confidence.

Why Choose Our Switches & Fuses?

Wide Variety: From micro switches and thermal switches to fuse holders and wall plates, we stock components for hobbyists, engineers, and professionals alike.
Trusted Ratings: Products rated for standard voltages (12V DC to 250V AC) and a range of amperages to match your exact application.
Durable Materials: Flame-retardant ABS housings, ceramic thermal cutoffs, metal push buttons, and more — built to last.
Value Packs: Many items are available in multi-packs, so you always have spares on hand.

What's in This Collection?

Our Switches & Fuses range covers every major component type you need for electrical control and circuit protection:

Push Button Switches — Self-locking, momentary, LED-indicator, and waterproof variants for 12V to 250V systems.
Dimmer Switches — Rotary dimmers for AC lamp circuits and DC PWM dimmers for LED strips in automotive and marine use.
Thermal Switches & Fuses — KSD9700 thermal switches and ceramic cutoff fuses for reliable over-temperature protection.
Fuse Holders — Glass tube panel-mount fuse holders in 5×20mm and 6×30mm formats.
Circuit Breaker Enclosures — Flame-retardant ABS boxes for safe, tidy breaker installations.
Specialty Switches — Door lock switches, air pressure switches, micro switches for key fobs, and more.
Wall Plates & Panels — Blank wall plates to finish off outlet and socket installations cleanly.

Applications

Our switches and fuses are used across a huge range of applications, including:

Home electrical installations and DIY lighting projects
Automotive, RV, marine, and truck electrical systems
Industrial control panels and machinery
Consumer electronics repair (remote key fobs, set-top boxes, DVD players)
Spa, hot tub, and garbage disposal systems
Custom electronics and maker/hobbyist builds

Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: What is the difference between a momentary and a self-locking push button switch?

A: A momentary push button switch only completes (or breaks) a circuit while it is physically held down — it returns to its default state when released. A self-locking (latching) push button switch stays in the activated position after being pressed and only returns to its original state when pressed again. Our 12mm Pushbutton Switches Self-Lock & Momentary OFF-ON – 10 Pack includes both types so you can choose what suits your circuit.

Q: What is a thermal cutoff fuse and when do I need one?

A: A thermal cutoff fuse (TCO) is a one-time safety device that permanently opens a circuit when a preset temperature is exceeded, preventing overheating damage or fire. They are commonly used in hair dryers, coffee makers, motors, transformers, and other heat-generating appliances. Our 10Pcs Ceramic Thermal Cutoff Fuses are available in multiple trip temperatures (185°C and 230°C) and current ratings (10A, 15A, 20A) to match a wide range of appliances.

Q: Can I use a DC PWM dimmer switch for AC LED lights?

A: No — DC PWM dimmer switches are designed exclusively for DC voltage systems (such as 12V or 24V LED strips in cars, boats, or RVs) and must not be used on AC mains circuits. For standard household AC lighting, please use an AC-rated rotary dimmer such as our 120V Rotary Dimmer Switch – LED & Lamp Brightness Controller, which is built and rated for mains voltage.

Q: How do I choose the right fuse holder for my application?

A: The key factors are the fuse size (5×20mm or 6×30mm are the most common standard sizes), the voltage rating (ensure the holder is rated for your circuit voltage, e.g., AC250V), and the mounting method (panel mount for enclosures, inline for wiring harnesses). Our 10Pcs Glass Tube Fuse Holders support both popular fuse sizes and are rated to AC250V, making them a versatile choice for most projects.

Q: Are these switches and fuses suitable for outdoor or wet environments?

A: Some products in this collection are specifically designed for wet or outdoor use. For example, the 12mm Waterproof Momentary Metal Push Button Switch features an IP-rated sealed design suitable for moisture-exposed installations. Always check the individual product's IP (Ingress Protection) rating and voltage/current specifications before installing in outdoor, marine, or high-humidity environments.