Black Rocker Switch – 4-Pin DPST On/Off KCD1 – 6A 250VAC / 10A 125VAC | 2 / 5 / 10 Packs

The KCD1 Rocker Switch is a compact, snap-in DPST (Double Pole Single Throw) On/Off switch designed for general-purpose power control applications. With its 4-pin configuration, this switch simultaneously breaks two independent circuits with a single toggle -- ideal for controlling both lines of a DC circuit or switching a load plus an indicator light. Its miniature 21×15mm form factor and snap-in mounting make it easy to install in control panels, enclosures, and DIY electronics projects.

⚠️ PLEASE CHECK SIZE AND PANEL CUTOUT BEFORE ORDERING
This switch measures 21 × 15 mm (0.8" × 0.6") and requires a panel cutout of approximately 19.2 × 13.2 mm (0.76" × 0.52"). Please review the dimensional drawing in the photo gallery to confirm it fits your panel or enclosure before purchasing.

🔧 How It Works

The KCD1 is a DPST (Double Pole Single Throw) switch, meaning it controls two separate circuits at the same time using a single rocker toggle. Think of it as two independent On/Off switches built into one compact body.

1. Off Position – Both internal circuits are open (disconnected). No current flows through either pair of pins.
2. On Position – Press the rocker to the "On" side. Both internal circuits close simultaneously, allowing current to flow through both pairs of pins.

The four pins are arranged as two pairs. Each pair acts as an independent switch contact:

• Pins 1 & 2 – First pole (Circuit A)
• Pins 3 & 4 – Second pole (Circuit B)

This makes the KCD1 4-pin switch especially useful when you need to break both the positive and negative lines of a DC circuit for complete isolation, or when you want to switch a load and an indicator LED together.

⚡ Key Features

• DPST On/Off Operation – Switches two circuits simultaneously with a single toggle action
• Dual Voltage Rating – Rated for 6A at 250VAC and 10A at 125VAC
• Snap-In Panel Mounting – Installs quickly into a standard rectangular panel cutout (approx. 18×13mm)
• Compact Form Factor – Miniature 21×15mm body fits tight spaces and small enclosures
• 4.8mm Blade Terminals – Compatible with standard quick-connect spade connectors for solderless wiring
• Durable Construction – Rugged nylon housing with copper alloy contacts for reliable switching
• 2-Position Latching – Bistable On/Off positions with a satisfying tactile click

📐 Specifications

📌 Pin Configuration

📦 What's in the Box

• 2, 5, or 10 × KCD1 4-Pin DPST Rocker Switch (KCD1-H-4P2D-10) - Quantity chosen above

🎯 Typical Applications

• Power On/Off control for DIY electronics projects and enclosures
• Arduino and Raspberry Pi project power switches
• LED lighting control panels
• Small appliance and equipment power switches
• Automotive accessory switches (12V DC systems)
• Control panels and instrument enclosures
• Battery-powered device power management
• Dual-circuit switching (e.g., load + indicator light)

⚠️ Important Notes

• This switch is rated for AC loads at the specified ratings (6A/250VAC, 10A/125VAC). For DC applications, derate accordingly -- DC arcing reduces the effective current rating.
• Ensure your panel cutout matches the required dimensions (~18×13mm) for proper snap-in fit.
• Use appropriately rated wire (at least 18 AWG for 10A applications) and proper spade connectors for the 4.8mm blade terminals.
• Do not exceed the rated voltage or current. Overloading the switch may cause overheating or failure.
• For high-vibration environments, consider securing wiring connections with heat-shrink over spade connectors.

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