Día: 7 septiembre, 2026

Relay vs Contactor: Why Amps Alone Won’t Tell You Which One You Need

Relay vs Contactor: Why Amps Alone Won’t Tell You Which One You Need Ask ten electricians “what’s the difference between a relay and a contactor?” and nine will say the same thing: a contactor is just a bigger, heavier relay. Open any comparison table and you’ll see the same story, relays switch under 10 A […]

Circuit Breaker Types Explained: How to Match the Breaker to the Circuit

Circuit Breaker Types Explained: How to Match the Breaker to the Circuit If you have ever looked up “circuit breaker types” and finished more confused than you started, you are not the problem. The problem is the word type. In this industry it means four different things, and most guides quietly pick just one. A […]

NPN vs PNP Sensor Outputs: Which One Do You Actually Need?

NPN vs PNP Sensor Outputs: Which One Do You Actually Need? The replacement sensor is on your bench. It’s the same housing, same detection distance, same three wires, brown, blue, black, and the machine still won’t see it. Somewhere in the ordering conversation, a question got skipped: NPN or PNP? It’s the cheapest mistake in […]

Proximity Sensor Wiring Diagram: PNP, NPN, 2-Wire & 4-Wire Connections

Proximity Sensor Wiring Diagram: How to Wire PNP, NPN, 2-Wire and 4-Wire Types If you searched for a “proximity sensor wiring diagram,” you probably have one of two things in front of you. Either a brand-new sensor and an input that needs it to work, or an old sensor whose label wore off years ago. […]

Micro Switch vs Limit Switch: What’s Actually Different (And How to Order the Right One)

Micro Switch vs Limit Switch: What’s Actually Different (And How to Order the Right One) Ask five people what separates a micro switch from a limit switch, and you will hear three different answers. Some say the two are rival product families. Some say a limit switch is only a micro switch wrapped in a […]

Inductive vs Capacitive Proximity Sensors: How to Choose by Target Material

Inductive vs Capacitive Proximity Sensors: How to Choose by Target Material Proximity Sensors in a Nutshell: Two Families, One Material Question A proximity sensor detects an object entering its sensing zone without touching it and reports that as a clean on/off signal to a PLC or controller. No contact means no wear, which is why […]

Limit Switch vs Proximity Sensor: Which Fails First in Your Conditions?

Limit Switch vs Proximity Sensor: Which Fails First in Your Conditions? Ask five engineers “limit switch or proximity sensor?” and you will get five confident answers that contradict each other: mechanical switches survive nuclear war, or they die in six months; inductive sensors are immune to dirt, or they drift and lie to you. All […]